General Science Quiz - How Many Can You Answer?
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- čas přidán 1. 02. 2024
- How good is your science knowledge? Find out now with this 100 question general science mega quiz. The best science quiz to test your knowledge.
You have 10 seconds for each question and then the answer is revealed. Good luck
Next try quiz 2 in this science quiz series here • Hard General Science Q...
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All videos are meant for entertainment purposes only. It's just for fun. Whilst I take care to have accurate answers, I accept no liability for any loss as the result from any errors, mistakes or omissions in these videos. The information in these videos should not be taken as fact and you should do your own due diligence and not base any decisions on the information contained in these videos. Answers are fact checked on the internet and believed to be correct at time of video posting. The images shown in the video are just for entertainment and illustration only and they do not represent the information in the questions or any brands or companies or persons mentioned in the quiz videos. The images do not necessarily reflect the information in the questions and are just for entertainment only.
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How did you do? I had a lot of fun making this one. Don't forget there's loads more quizzes on my channel plus more interactive quizzes on my new website 👉 quizamp.com
i know this is a just a thing for fun
but i feel the need to pointt out q.20 is incorrect
q20 'what is the term for the ammount of matter in an object'
the correct answer here should be mass defind by its volume
..an object haave mass, but its defined by its volume...
so the correct answer as the question is asked is Volume
say we have an object a solid ball... it has a volume that defines the boundaries of the object regardless of what mattter it is made of.
q22 a general misconception is that the suns core is the Hoittest part of the sun (even among scientists), it isent, its outside the core, in general we call it the corona... (but it isent quite right it inbetween)... but for fun trivia (without the science) the core is an acceptable answer...
q44 'what is the only element without neutrons in its nucleus'
about 99.985% have just a single Proton (H-1), and other isotopes can have one or more Neutrons.. the quetsion should ask what element normally...
q73 'who famously used a prism to demonstrate that white light is made of different colours'
..most likely Ptolomy over 2000 years ago (who also wrothe 5 books on light, lenses etc, of one survived till today), the mathematical proof was made by Roger Bacon in 13th century (but he couldent experimentally prove it), its clearly show he knew 'light' was made of different waveneghts (colours)...
q80 'what causes the earth to have seasons'
the correct answed should be its orbit around the sun in combination with its tilt,
explanation: it the Earh was just tilted but stationary only difference in short wetherpatterns would exist (day and night), earths orbitt around the sun it was what causes the season (the axis tilt to or from the sun at extremes (winter - summer)
q85 'what is the process of a cell dividing in two identical daughter cells called'
correct answer is Cytokinesis (wich Mitosis is a step of, splicing of the DNA molecule)
@Patrik6920 great context, thank you for the additional info
@@Patrik6920 Thanks for commenting. Mass is a measure of the amount of matter in an object. There are many references to this. The hottest part of the sun is definitely the core, again, many references. The Earth's tilt causes the seasons, it has nothing to do with the orbit. This can be confirmed by the fact that it is closest to the sun in January, yet it is winter in the Northern Hemisphere in January. Again there are many references that confirm it is due to the tilt. Anyway, thanks for commenting, its always great to discuss these things.
@@Quizzes4U Mass vs Matter: ..a fixed ammount of matter can have drastically differen weight volume, dimensions say on, earth, or in space or in proximity to a high gravity or when accelerated ner the speed of light.
The sun: it was assumed very long the core was the hottest
Seasons on Earth: both the earths tilt and orbit around the sun is nessesary to create seasons..., Eaths closeness during it orbit has very little effect on the season, its wich way it tilts .. it its orboit would not be resonsile for this we would experience summer and winter every day as the earth rotates.. we dont...
I have to be pedantic about Q60. "What happens to the speed of light when it travels through water?" Now you say "it slows down" but that's not right.
Light travels at a constant speed through water. That constant speed is slower than when travelling through a vaccuum or the air, but while it's travelling through the water it is still travelling at a constant speed.
Now even if you'd said "What happens to the speed of light as it ENTERS water?" You'd have been closer to correct but still not quite right because it depends what medium the light is entering the water FROM. If light was to enter water from a diamond, it would actually speed up.
MITOCHONDRIA IS THE POWERHOUSE OF THE CELL! ✊🏻
Mitochondrion
@@anthonystreeter7808
The 'Mitochondrion' - singular
'Mitochondria' - plural form (meaning every Mitochondrion)
DUDE I CLICKED THIS VID JUST TO SAY THAT!!!
It's not Chuck Norris?
Those questions were not for average individual 😊
Q47: no, convection is not the "explanation" for why hot air rises and cold air sinks, it is the description of that phenomenon. The "explanation" is buoyancy, arising from changes in density due to changes in temperature.
Yes, but it was the best of the three choices.
@@eracer1111 Nope, it is not.
The choice that comes closest to explaining why, is actually Archimed's principle.
It is the only choice that incorporates buoyancy, which is what causes hot air to rise and cold air to sink.
Convection is merely a description of the way to transport heat by storing it in a fluid and then displace the fluid, regardless of direction or power source for that displacement.
It's the working of thermals that explains specifically the flow of hot air through cold air and vice versa.
Convection is exactly the term for what is happening. 😊
I agree, the convection is the phenomena due to Archimed's principle. Something most push up the hot air and it's cold air because more density than hot air. That how work Archimed's principle.
97/100. Medical knowledge again played a big part. It helps to identify thhe root of some of these word and to work out the correct answer logicly.
are you a doctor
@@user-yx4qc8kv3iNo I grew up in a medical family and being inquisitive would always ask what words mean and what things had effects on. I also did biology at A level.
It is called Latin
@@stevenpace892 And Greek ofc
@@stevenpace892 That's a nice smart arse response. But the roots of medicin are based both in latin and old greek. Jog on.
№47 is not correct either. The reason for hot air rising is that it is not as dense as cold air. Cold air is denser (i.e. heavier per volume unit) and dense liquids, gases tend to drift lower, pushing other liquids/gases, up. So the reason is "different density". "Convection" is a consequence of this process.
Your argument sounds fair & I had to think about this one for a bit, because isn’t “Cold” a term we have given to a body that lacks relative heat, ie: there is no such thing as cold, just a lack of heat.
A heated substance will have more energy and tend to rise and causes motion even at an atomic level, heat causes more motion (heat is a body/or energy that is in constant motion) & so a convection of currents can/will occur as the heat continues to move from a warmer body to a cooler body until it reaches an equilibrium.
Hot water system can be interesting in this way, thats a solar HW system will have it’s tank above the solar collector panels so the cooler water circulates by convection to the panels for heating which creates a convection cycle, whereas a electric HW system tank will introduce the cold water (usually) down low of the tank as the hot water exits the upper tank level & there will be a definite line where the cold and hot water is until it reheats the whole tank again by way of a heating element down low which will cause a convection of currents to heat the whole tank, but what happens if the heating element blows while the tank is half hot & half cold & left that way with no water in or out, without a pump to move the water inside the heat would slowly move down to the lower cooler water, but this would take some time and I dont know if it could be called convection in such an instance where the cooler water is just slowly absorbing the heat from the hotter water source above it and not really setting up a convection of currents. IDK just guessing.
@@evil17
"A heated substance will have more energy and tend to rise and causes motion even at an atomic level, heat causes more motion"
Be very careful here, the heated air rises only because it has a lower density. The warm air body "floats" in the ocean of cold air and rises up, because its weigh is less than the Archimedes' force exerted on it by the ocean of the cold air. Heat is motion, motion is not heat. The energy of rising hot air (upward velocity) is kinetic energy, not heat.
"a convection of currents can/will occur as the heat continues to move from a warmer body to a cooler body until it reaches an equilibrium."
Most heat transfer between the hot and cold air "bodies" happens because of these bodies mixing together on the boundaries. It is hard to talk about a "body" that does not have a well defined boundary. Another thing to consider: if the warm air body is above the cold body, there is no reason for any movement, so, while the heat transfer is in progress from the warm to the cold body, no movement happens and there is no convection. So, it's not the temperature difference that causes the convection. It's the difference in the specific weight of the bodies, which makes the lighter body to float in the denser fluid.
Convection is correct
You just explained how stupid the theory of gravity is. Thank you
@@LevelEarthWD no, gravity is a fact. You are just a reality denier.
92/100. I disagree that it's composition that distinguishes asteroids from comets, virtually all of the asteroids in the outer solar system - the Trojans, Kuiper belt objects, are largely composed of ices, and would be comets if in highly elliptical orbits that entered the inner solar system.
There was a recent science news item about the difference between between asteroids and comets. The thinking is tilting to the view that asteroids and comets are pretty much the same, in terms of their compositions at the time the solar system was forming. But asteroids were in closer orbits, and most of their volatile components -- ice and frozen gasses -- have been driven off over the eons. Also, orbiting in the much more crowded inner parts of the solar system, they've been subject to reforming by collisions and agglomeration. But there's been found to be a continuum of objects between "typical asteroid" and "typical comet". So it's their orbit that distinguishes them in a more fundamental sense than composition. Although their orbit does affect their composition over time.
@rogerarnold5627 I suspect that the line of reasoning that leads to the claim that its composition that counts rather than orbit is:
What makes a comet a comet? It has volatiles that produce the coma and tail, an asteroid in the same orbit doesn't have the coma and tail because it has few volatiles, therefore the difference between a comet and asteroid is the composition.
The problem with that reasoning is that it eliminates from consideration all the volatile containing asteroids not in the orbits that make any volatiles sublimate.
Actually Einstein, asteroids are mostly in the asteroid belt, the deviding line between the inner and outer solar system
@@mauricearpin7946 C and D type asteroids are rich in volatiles, they are mostly the more distant asteroids in the main belt. If in elliptical orbits that brought them close to the Sun, many would form coma and tails.
@@mauricearpin7946 The Asteroid-Comet Continuum: In Search of Lost Primitivity
By Matthieu Gounelle
"Recent results from the Stardust comet sample-return mission have confirmed the idea that there is a continuum between primitive small bodies in the outer main asteroid belt and comets. Indeed, the mineralogy as well as the chemical and oxygen isotope compositions of the dust from comet Wild 2 are very similar to those of carbonaceous chondrites, a class of meteorites allegedly derived from primitive, dark asteroids. Comets no longer represent extremely primitive samples of the early Solar System that are radically different from dark asteroids. We enter a new era in which comets and their siblings, the dark asteroids, are seen as a collection of individual objects whose geology can be studied"
90/100. Of the ten I missed, I just had no idea on 8 of them. There were also several that I was low confidence on but guessed right.
87/100 I'm studying in 10th this was useful for me thank you so much
Me too 🙃mine score was 85/100😅
That’s greattt I got 83/100
@@chimkennubbets6899 I'll start my 10th grade from the 18th of april and i got 97.Still, everyones knowledge level is different but Good job nevertheless!
@@enhypen__hoonki that’s amazinggggg! Keep it up man you’re doing awesome :DD
@@chimkennubbets6899 THANKYOUUUU
Your score is good too! you're so sweet
How I love science quizzes!
Thanks so much!
Any time!
I miss 5, at 75 I still got it . I do a lot of these test to keep sharp . I also read a lot .
Question 41: refraction only describes the bending of light it doesn't explain it. The same thing goes for question 47, where convection describes the movement of warmer air. I got 78 first time round, but second time I did a lot better!
You have to learn how to answer multiple choice questions, it's the one that's "correct" not the one that's really deeply correct lol. Good lesson to learn if you have to take exams.
🤓
Great quiz.
83/100. Pretty good for a gal who sucks at science. My score would have been much, much lower without the multiple choice, I can tell you! LOL Thanks much for the brain workout, Ben. ♥
83 is definitely not someone who sucks at science. You did great 👍
@@Quizzes4U Well thank you, kind sir. ♥
@@Quizzes4UIm 13 but scored 84/100 pretty good, but I thought I would do better 😢😂
69/100 ....
@@DinoBryce Wow dude I'm sixteen and a nerd but I only got 74/100. Great job!
Great quiz, but eeeh, compounds that contain carbon aren’t necessarily called organic compounds… like graphite (the thermodynamical most stable) is most definitely an inorganic and the same is diamond which is also pure carbon.
Organics will have hydrogen at least other than carbon, and often also oxygen, nitrogen, sulphur and/or halides
Thanks for commenting. Maybe it's the way I worded it or how you read it. All organic compounds contain carbon compounds. That is what was meant by it. I will word it better if I use that question again sometime. It is a challenge of making short questions that cannot be interpreted in different ways. Thanks again for commenting , you are right, it should have been worded better. 😁
Heh... Chemist vs BioChemist !@@Quizzes4U
The key word here is "compounds." Graphite and diamond are allotropes of carbon, which itself is an element not a compound
@@Quizzes4U Yes. If you had asked it the other way round it would be correct. i.e. Q. What element do all organic compounds contain? - A. Carbon. The problem is that the various metal carbonates are all classified under the 'Inorganic' section in chemistry textbooks.
60/100
Dang….
I thought i knew better
I’m still just 15 tho
And I kneen to learn more 😊✊
Thinking you know better, or more, is a sign of an open curious mind. Apply the infinite.
HAHAHAHAHAHAHAHA SO DUMB
Need !!😂
98/100...thanks for the 2 facts I didn't know about
Scraped in with 68/100. I’m very pleased with that as I thought I would have got a lot less. I wouldn’t have that score without multiple choice answers because the words echoed in my brain from school. These are great quizzes Ben, especially as I have had sciatica pain on and off for several years. They are a wonderful distraction from the pain so thank you xx
Well done 😁 and thank you for letting me know how much you enjoy them. That means a lot to me. 😁
@@Quizzes4U Your welcome xx
Sorry you are dealing with pain too. Yes, keeping the brain busy really helps. It's sleeping that's hard. I had to look twice, we got the same score.
@@judil3294 Take care. Sleep gets to be a chore that needs to be done desperately. It’s so frustrating when you only get snippets of it. I tell myself that it’s overrated just in the hopes of proving myself wrong as if it is something to fall foul of.
@@joannayeo9545 Yes, we need it so desperately but end up afraid to even try.
I got 77% of the questions. Travis X
80/100! looking forward to learning about more things :)
79/100 im super happy with that especially as someone who sucked at science at school.
I'm 55/100 but I'm half of it. I'm still proud 😅
Thank you Ben for your superb quiz. 👍👍
92/100
Great job! You said it was one of your favourite subjects if I remember correctly.
🌹💖 Thank you very much my dear very best friend, Someone💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
🌹💖. Thank you very much again my dear very best friend, Someone💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
🌹💖 Thank you very much once again my dear very best friend, Someone🧸💖, for my special lovely highlight. Very, very much appreciated. 🙏🧸🙏. Please always be extremely careful and always stay safe and well always 💖🌹
Great quiz. Thanks for the quiz Mr Ben.
My pleasure!
73/100.
I’m going to give myself some slack as I haven’t been in school and done science for 6ish (plus) years so not too bad. Still had a surprising about of fun.
JEE/NEET homies mark your attendance
Nooo, you all are even here 😭🙏🏻
Yesss
Mee in 10th😊😊
Jer
Present!
My degree in mechanical engineering was in 2005, but I lost touch with my field and moved to IT and marketing. I also haven’t read any chemistry books since high school. Still, I aced the quiz with 100/100 and no mistakes. It must be my "neuroplasticity." 😅The biology questions were easier with the multiple-choice options. But I didn’t need them for physics. I remembered that Rayleigh’s scattering makes the sky blue and diffraction bends light through water (we did experiments on these things). I guessed the gymnosperm question, though. Your clue about the corn on the cob helped. I knew it was a seed. I also knew that sulfur compounds are not common on planets like Mars. I’m so happy with my quiz results. And I feel smarter too. Mechanical engineering is the best education you can get. That stream develops the strongest analytical skills that stay with you your whole life. 😅
Dude ure an adult. Anything less than a 100 is sad for an ME
92/100 ... I too had a little issue with No 47 feeling that Archimedes was more fundamental and convection was a process - but I looked it up after and convection is totally the right answer. I also worried a bit about the asteroid/ comet one feeling that the orbit was the more important - but I looked that up as well and am now very happy that composition is a good answer. A most enjoyable quiz.
A great quiz, Ben, and a fantastic opportunity for me to review old material and learn quite a few new things. My score: 87/100. Many thanks, Ben. 🙏😄
I got 70/100..... Grade 10 student here. We didn't study most of this in our school (yet). I answer this kind of test to further develop my knowledge in science since I'm a soon-to-be STEM student :>
I got 97. But I'm 60 years old. :D I'd say you're doing great. Also, two of the three I got wrong I had learned at one point but just got mixed up.
I'm in 10th and I grabbed 95/100, u just have to study more 😅
@@vedantwankhade4239 no one asked scammer
@vedantwankhade4239 it is thanks to our stressful and competitive environment as Indians that you got 95. I don't personally know anyone who does this but I've heard some of us Indians start preparing for university entrance exams since grade 7. That's just sad
@@uranus256 he is an indian himself and he's clearly lying about his score come on you should'nt have fell for it
I scored 95%. I'm 77 years old and left school at fifteen, but I have a extremely high IQ and got into Uni as an adult student and gained several degrees.
Great quiz!!
Thanks I enjoyed that. Your voice is much less of an irritant than many who host these quizzes!
Great quiz, Ben! I always second guess myself and did miserably-- but, that's not the point! It's great fun! Thank you and Cheers!
Glad you enjoyed it!
I love it, did 75% surprised at what I knew only from general reading, no science class since HS Biology.
Glad you loved it 😁
72/100 😢☹️ I'm so dumb
Same! I got 78% but that was with some very lucky guesses. 😊
@@SuspectedAnonymousUserNo, you’re not.
Fourth three correct ... Explain what I need to be doing ...study my science in order to get GPA in all studies
Just so sad for that many wrong but have not been with my science studies as often as needed because been focused on English studies, math studies
Can't Thank you enough for these studies ! Great video!
96/100. Missed the hydroponics one, the batteries one, the shortest day one and the copper and tin one. I would like to point out three aspects from the quiz: 1. Question 61 made me wonder about the difference between mould and mold 2. [!!spoiler for Q69] that is just one of the two main accepted definitions of organic compounds; the other one is they contain a C-H bond or C-C bond, the main difference between the definitions being that all compounds that contain carbon would also mean the ones widely considered inorganic such as carbon dioxide, inorganic carbonates or cyanide 3. I would like to point out the meme entries: the mitochondria question and the F vs C degrees one.
Anyway shoutouts to: the guys in the comments that elaborated on the controvery of question 47, the ones that finished school a long time ago and the science teacher that got 100/100, I aspire to be you one day
Greeting from geology 🤙
Great fun! 70/100 👍
19 wrong. I really enjoy the science and human body quizzes. Tysmf,Ben.👍😃👍
Thanks. I'm glad they are popular subjects as they are my favourite, plus geography. Thanks for playing 😁
me too (19)
Me three
Ben, love science and whilst I never actually keep score, I'd say around the 85 mark. I always do well with the science category and the more I do them, the more I learn. That's what it's about.
Glad it was a subject that you love. 👍
Cool quiz. Got 90 right. Learned from the ones I got wrong. Thanks!
Excellent quiz. I scored 88/100. The last 15 questions were the hardest. Thanks for posting.
Great job! Yes, a few tougher ones at the end. Thanks for playing 😁
@@Quizzes4U 87 here. I'm very shady on any biology questions.
Agree about the later questions. I scored 86/100 and got as many wrong in the last 22 questions as I got in the first 78.
95/100
80%
With a grade 8 education.
Started out well, missed more towards the end - esp. physics or astronomy/geology related questions. Scored 86/100. I haven't attended school in 35 - 40 yrs.
Great quiz, very enjoyable and relaxing 😄👍
Glad you enjoyed it!
33 wrong 😢 and for the question about how the elements react when frozen is they retract, all but one, water, it expands when frozen. Great quiz😊
If you took more knowledge from it ?? Then you won Sir . 😁👍👏
except water isn't an element, and a few other things also expand when cooled
If water did not expand, and become lighter and float, it would sink to the bottom, forcing all the life upwards, and all the fish would die when it freezes completely. Luckily for us, the floating ice keeps the water underneath liquid.
Water contracts like most other matter when cooled....slightly...then, when it gets cold enough to freeze, it forms a crystal lattice when makes it "expand" greatly. Not arguing, just clarifying.
@@quaddawg I learnt at school (many, many years ago) that the so-called anomalous expansion of water starts at 4 degrees C, but it does not solidify until just above 0 centigrade.
Best score for me yet! 95/100!
Awesome 🎉🏆
94/100, great quiz!
74/100. Very fun, thank you.
Number 47 annoyed me convection isn't why hot air rises it's a result of hot air rising. It rises due to being less dense than the surroundings so experiences an upthrust greater than it's weight
89/100 , Incorrect ones were 12 - 22 - 37 - 38 - 46 - 48 - 57 - 69 - 71 - 87 - 99
Slightly disappointed BUT .. Loved it Sir 👏😁.
Nice one. Great to hear that you loved it, that's why make them 😃
well thought out questions
Thanks
#19 correct answer, but incorrectly worded question. If a falling object has reached terminal velocity, that is because the force of air resistance matches the force of gravity so there is now no more speeding up. By definition this is not "free fall". Free Fall is gravity only - no other forces, not even air resistance.
Great quiz! I need to brush up on my anatomy.
In number 23 perhaps hydronium would be a better answer than hydrogen, the p representing the negative log of the hydronium ion concentration. It's kinda hydrogen, but kinda not.
Correct hydronium not hydrogen
94/100 with the options; 70/100 without.
Great stuff 👍
Thank you
86/100.It was mainly medical questions that I didn’t know. Good quiz.
I got 86% too.
Great quiz, Ben. Thank you. Score today is 98/100. It is always fun to do your quizzes and I always learn something new. 👍
Excellent!
so which two i got to know
I missed #'s 73 & 87. @@bethtp1
96/100. Nice quiz, although there was no right option for the convection question. The reason why hot air moves up is the _difference in densities_ and the term convection just refers to the fact that we have transportation of energy as a _consequence_ of that movement.
Hi Ben 87/100. Not too bad. A good mix of questions . As a history graduate I was a bit worried. The only science I studied in school was biology but I must have retained more than I thought. I also read a lot of science fiction so that came in handy.
You did great 😃 thanks for playing
Jinx - 87/100 as well.
Tbh according to my knowledge I got 53/100 and I am a Science student, gosh! It's kind of shame for me, I am Dumb(눈‸눈)
Q38 - I think the term "powerhouse" is too general and ambiguous, so that "nucleus" would also have been a correct answer. Even though mitochondria are often referred to as the "powerhouse" of the cell, this is not a strictly scientific definition. It would have been clearer to have asked "what part or parts of a cell generate the energy needed to power the cell?" rather than relying on people getting the right meaning of the word "powerhouse".
68/100 I'm crap at science!
That's still good. Thanks for giving it a go. 😃
I got the same score as you but that was a lot higher than I expected to get.
I'm willing to bet that that score is way above average these days. Bet you'd do far better if you took it again!
85/100 Great quiz Ben. Trouble is at my age I forget things. 😂🇿🇦😊
Me too. 🤣😁
Awesome Information. Done surprisingly well on the Biology & Nutrition.
Glad it was helpful!
Excellent quiz!
I ended up with 81, but would have got only half of that without the multiple choice.
Great quiz, as always, but the speed of light doesn't slow down while passing through water. A photon travels at the speed of light between its interactions with water molecules.
Glad you enjoyed it. The commonly held view is that light does slow down in water (ref. The refractive index of light is 25% slower when it moves through water), however after further reading on the subject, a more correct answer would be that it "appears" to slow down.
That's accurate! Semantics I suppose, as it takes longer to detect a light source through a body of water than a body of, say, air.
@@Quizzes4Uslows down is completely fine, esp. if you think maxwells equations in media are good and they are. Any reference to a photons is suspect, since a light wave doesn’t even have a fixed number of photons (see Glauber state), and single photon slows down and the speeds back up on the exit….but is you say it’s moving at c but interfering with phase shifted versions of itself, then is it really the same photon, or a coherent copy of the original? idk, why get into quantum mechanics…just say it slows down, or not.
If you look at it classically with jefimenkos equation, then a wave doesn’t have an identity, it’s just an emergent phenomenon related to charges and currents😊 in the pas lightcone…so agin, it’s coherent new wave. Idk…bosons be like that.
Question 60: The speed of light never changes, it's always the same. It only appears to go slower, because it takes a longer path.
That is true in general relativity, a light ray follows a geodesic path in curved space-time near a body with mass. However, light travels more slowly through a medium because the relative electric permittivity and relative magnetic permeability are greater than unity and the speed of light in any medium is given by c= 1/sqrt(epsilon times mu).
I think it's generally considered that light almost never travels at the speed of light... it's always slower. That's why they have to add "in a vacuum" - am I right?, did I get that right?
@@geniegogo Yes, the constant 'c' only applies to the speed of light 'in vacuo'. In any medium, including air, it travels more slowly.
Hello again, Ben. I do like your long quizzes which concentrate on specialized sunjects.
Glad you like them!
Nice quiz
Questions no. 47 is worded wrong. Convection IS the movement of fluids due to different properties, like density. It doesn't explain why it happens.
Archimedes explains that warm air, being less dense as it expanded, rises above colder, denser air because it displaces more volume per unit of mass.
I guessed Archimedes on this as well. I knew Archimedes had a law of buoyancy, and warm air rising above cooler air IS an example of buoyancy, because the warm air is less dense. Just as something less dense than water (or other fluid) will float to the top.
Spot on mate. I was gonna say the same thing
Thanks for the feedback. Yes, with hindsight I could have worded it better. It's always difficult when trying to keep the questions short.
Convection is the name of the process by which warm air rises by virtue of its greater buoyancy than the surrounding cooler, denser air. Convection is the correct answer.
95
I really enjoyed that quiz. I did basic biology at school, English was my best subject, but I got 86 right. When you get to 77 you pick up a lot of information. Maybe that’s the wisdom of old age!
Great job!
Thank you Sir. Excellent find. Cheers from Vancouver Island
Glad you enjoyed it. There's also a second science quiz I just posted last week. Hi to Vancouver Island. 😁👍
"What is the term for the amount of matter in an object?". It is neither volume, density or mass. This is easy to see since you can imagine a pair of objects, one of which contains more atoms, yet the other one has more volume/density/mass. The term you are asking for is simply "amount" and is measured in mol.
Look up almost any physics or chemistry book to see the definition of mass and it will be given as the amount of matter in something.
@@robynreed6368 What's that? An argument from authority? It is still wrong unless you attack my statement via its content. Wikipedia by the way is sophisticated enough to write "Mass is an intrinsic property of a body. It was traditionally believed to be related to the quantity of matter in a body, until the discovery of the atom and particle physics."
I guess you could say mass, because mass effectively conveys the sense of it--how many subatomic particles are in the object. You don't want to say how many atoms because atoms of different elements have different numbers of subatomic particles.
I would argue that while moles describe the number of nuclei, the amount of matter is more likely described as what affects space-time more / has greater gravity, which we measure as mass.
The amount of matter is measured in mass.
1 mol of carbon (12 grams) has a different mass than 1 mol of sodium (23 grams). This is because sodium has more matter (protons, neutrons, and electrons) than does carbon. Mass truly is measuring the amount of matter - protons, neutrons, and electrons that make up the atoms.
You didn't trick me with the bile question. All of the questions were super easy (Barely an inconvenience) and I got them all right except the iceberg. In fact, I got tired of waiting for the answers, so I went to 1.5x speed and still got them right.
bollocks
I answered all these questions correctly 3 seconds after I was born, while walking up hill in BOTH directions in my father's pajamas!
90/100 - a lot of it was educated guessing to be honest! Some of this was from my GCSE knowledge luckily :)
Thanks, this is informative and fun. 95 correct; all those years of study paid off, and I learned new bits of knowledge.
Glad it was helpful!
well that was rather disappointing, thought i'd do better than this... 71/100. Thanks Ben.
Yea me too with 76/100. I think maybe the brain gets sluggish after about 50 questions and waiting for the answer.
@@nancyannirvin4507 Maybe you are right. I missed 3 of the first 50 and 26 of the last 50.
light always travel in the speed of light
Only in a vacuum is it at the speed of light in vacuo quoted in all the textbooks. The speed of light depends upon the electric permittivity (epsilon) and magnetic permeability (mu) of the medium it is travelling in. c = 1/sqrt(epsilon times mu) You can derive that from Maxwell's equations of electromagnetism so light always travels more slowly in any medium than in a vacuum. Even in air is travels about 1% slower if I remember correctly.
@@williambavington5392 nope
@@NotKnafo Explain
@@williambavington5392
speed of light is a constant
light always move in the speed of light otherwise its not a constant
92/100. Pretty good quiz.
92/100 really enjoyed it brilliant quiz thanks again Ben, much appreciated 👍👍😁
Excellent! Glad you really enjoyed it 😀
Just a small gripe. On #5 it should correctly ask " . . . specifically deals". Thermodynamics deals with all ranges of temperatures INCLUDING very low temperatures. So both answers are correct for the question presented.
Also, the question about which element has no neutrons in its atoms. The correct answer sometimes DOES have neutrons (sometimes two of them!), but its most abundant isotope is indeed neutron-free. So the question should ask, which element USUALLY does not have neutrons.
Thanks for the info!
@@Quizzes4U On that question all three answers are correct. Although Cryogenics specifically focuses on the effects of low or ultra low temperatures on matter, quantum mechanics and a big area of quantum physics is literally impossible to study without using temperatures near the absolute zero range because at those low temperatures phenomena are more easily observed or statistically possible to occur. All three choices are correct for that question. It is like asking which profession is concerned with temperatures? A fireman? A meterologist, or a cook?
I got 95. So, I take this opportunity to say I haven’t been in school for over 40 years. It is a result of my acquisitive nature . But that’s enough about me, let me ask you this, what do you think about me?
I think you hide your narcissism behind a mask of humor
I think you have ligma
I think you are a very knowledgable tooter of your own horn, but I can’t say I blame you!
u r a douche
I don't believe you know The definition of acquisitive
good job Quizzes4U. i thought Frequency (horizontal length) & Wavelength are the same thing. the hight of the Wavelength is called an Amplitude. but there's also a custom modulation called Phase. you may need to consider revising that question.
i haven't taken a quiz or exam for couple of decades & scored around 90% first try. i'm not an expert but i have fair amount of Science & Math knowledge. Thanks for refreshing our knowledge.
Thanks for the feedback 🙂
Frequency and wavelength are not the same thing they are mathematically related, as the frequency increases the wavelength decreases and that's the frequency decreases the wavelength will increase. Frequency * wavelength equals the speed of the wave for radio and light that means frequency times the wavelength equals the speed of light.
87/100 One of my stronger subjects.
94/100 but I dispute a few, particularly the one about comets.
It's more a vocabulary quiz about science than a science quiz, but it was fun and interesting anyway, thanks!
Used settings to speed it up about halfway got 90 right but speeding it up might have helped I kept getting distracted too. Life, TV , cooking , some of these could be worded better. Describes, Observed, defined, causes, the Multiple choice makes it easier than filling in the blanks LOL...
love it.. played against myself.. barely won..
Thank you Ben, loved the quiz and yet another reminder why I should not have taken another shop class but glad I did;)
It's great to hear you loved it. Thanks 😁
88/100. I was hoping to get more.
I got 86 percent. Failed on some Nature questions.
Dave - England.
Got 89 correct out of 100.
Just wasn't able to answer questions of biology because that is not my main stream 😅. Although I got some basic questions correct.
80/100 It started out got right first 20 questions, and then it started getting harder, and for me I stumbled most on definitions, it was fun, thanks!
Glad you had fun 😊
nice refresher quiz 93 for me
So creative!
Nice find for debating or relaxing before bed.
Definitely!
Thank you for the video, this was more fun that I had anticipated.
I was hoping for over 90, but got 89. Still, not bad for someone who's not a native English speaker. Having to call out my answer within 10 seconds turned out to be more of a challenge than I thought at first. Had two lucky guesses, changed my mind three times all of which it turned out my initial answer was the correct one. I should have listened to what my English teacher used to say many decades ago: "Trust your instinct".
Wow. I flagged at the end. I got 71/80 to start with. Overall I got 83/100
This is a very high-quality presentation. It's visually stunning and covers a wide range of science areas. I'm subscribing!
Excellent! And thank you for subscribing 😁
I got 92 correct, but if it wasn't multiple choice, I reckon i would only have gotten about 50, maybe less.
I actually tried to cover up the answers for a while so it wasn't multiple choice...
I'll quibble with three:
convection is the dynamic process, while Archimedes' principle, differential buoyancy, is the mechanism;
light slows at the transition to water from vacuum or air, once within a medium it travels at the speed of light for that medium; and I'd say that an ice object or stony/metallic object can sit happily in a more or less circular orbit (low eccentricity) until some destabilizing interaction launches it towards fair 'helios' where the icy object (maybe sandy dune) grows its characteristic cometary plume(s).