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Earth Rocks!
United States
Registrace 26. 06. 2014
Video explorations of topics of interest to students of the Earth Sciences at the introductory level.
Produced by Katryn Wiese
Earth Sciences Department
City College of San Francisco
Produced by Katryn Wiese
Earth Sciences Department
City College of San Francisco
Fagradalsfjall lava flows Aug. 6, 2021
Pahoehoe lava flows -- rivers of lava from the Fagradalsfjall vent, Iceland, August. 6, 2021.
zhlédnutí: 555
Video
Measurements, Precision, and Uncertainty
zhlédnutí 619Před 10 měsíci
Review of how to take measurements, with appropriate precision and uncertainty, and how to carry that precision through mathematical calculations. This video was developed for introductory college-level geoscience classes.. Note: this is a second version of this video that fixes and clarifies a number of elements. If you are an earth science enthusiast and would like to support our ongoing vide...
Using Google Earth
zhlédnutí 1,8KPřed rokem
Review of how to use Google Earth to determine latitude and longitude of a location, measure distances, measure heading and bearing, and show elevation profiles. This video was developed for introductory college-level geoscience classes. Note: this is a second version of this video that fixes and clarifies a number of elements. If you are an earth science enthusiast and would like to support ou...
Unit Conversion
zhlédnutí 391Před rokem
Review of how to convert units and round your answer correctly. Designed for students in introductory college-level earth science classes. Note: this is a second version of this video that simplifies and clarifies the rounding of the final answer. If you are an earth science enthusiast and would like to support our ongoing video development and engage with us behind the scenes... Or if you are ...
Reading a Topographic Map
zhlédnutí 1,5KPřed rokem
Review of how to read a topographic or bathymetric map specifically how to read latitudes and longitudes, contour lines, and benchmarks. Also describes how to create a topographic profile and calculate vertical exaggeration. Designed for students in college-level oceanography and geology lab classes. For more information on how read all the symbols of topographic maps, review pubs.usgs.gov/gip/...
Field Bite: Arctic Ocean
zhlédnutí 3,7KPřed rokem
Virtual field trip to the edge of the Arctic Ice Sheet at the summer solstice, 2022. Includes photos, animations, and explanations of the shrinking Arctic Ice Sheet, types of sea ice, how sea ice forms, what it's made of, and how it differs from glaciers and icebergs, and the impacts both locally in Svalbard as well as globally. Part of the Earth Rocks! Video channel. If you are an earth scienc...
Field Bite: Ka'u Desert Pele's Tears
zhlédnutí 2,9KPřed rokem
Virtual field trip to the Ka'u Desert near the Kilauea crater on the big island of Hawaii. We'll see the recent lava flows (250 years old and younger), now covered partially by ash and Pele's hair from the nearby eruption of the Halema'uma'u vent. We review the processes that form volcanic glass, ash, and Pele's Hair during eruptions. Part of the Earth Rocks! Video channel. If you are an earth ...
Membership
zhlédnutí 727Před rokem
Join the Earth Rocks! Community. This video describes what perks members receive and encourages Earth Science students and enthusiasts and supporters to join the community. If you are an earth science enthusiast and would like to support our ongoing video development and engage with us behind the scenes... Or if you are a student and would like access to interactive lessons built around these v...
Making A Video
zhlédnutí 361Před 2 lety
A description of the process I go through to make my video tutorials. I created this video in 2014 for a workshop on Making Video Tutorials for Undergraduate Geoscience Education. In 20222, I still do many of the same things today as I did in 2014; I use the same software (updated versions), and I follow a similar process. I do it all in high definition now, write my scripts in a way that stude...
Welcome to Earth Rocks! YouTube Channel
zhlédnutí 6KPřed 2 lety
Welcome to the Earth Rocks! CZcams Channel. This channel contains video tutorials used in introductory college-level general education earth science courses at City College of San Francisco. I’m Katryn Wiese, the producer of these videos and professor of some of the courses that use them at City College. I created these videos to help my students prepare for class and review for exams. I make t...
Wind Erosion and Deposition
zhlédnutí 7KPřed 2 lety
For an introductory college-level physical geology class: a review of how wind contributes to erosion and deposition in the desert and along coastlines. The video reviews the formation of wind and the ways in which wind erodes, transports, and deposits sediment. In particular we review how wind moves sand (suspension, saltation, and creep), the results of what's left behind as the sand is remov...
Karst
zhlédnutí 9KPřed 2 lety
For an introductory college-level physical geology class: a review of how groundwater dissolves limestone and produces caverns, tunnels, and erosional remnant hills that collectively are known as karst topography. The video gives examples of karst landforms from around the world, and ends with a review of the chemical reactions that dissolve the mineral calcite and precipitate it later to form ...
Groundwater
zhlédnutí 55KPřed 2 lety
For an introductory college-level physical geology class: a review of how groundwater contributes to freshwater supplies, how it moves through aquifers, and how it is impacted by the permeability and porosity of the ground. We also discuss what happens when wells are drilled into aquifers of varying kinds and the results of over pumping of water. We end with a comparison with oil and gas migrat...
Carbonated Oceans (2021 Version)
zhlédnutí 2,8KPřed 2 lety
For an introductory college-level oceanography class. Review of the sources, sinks, and impacts of carbon dioxide dissolved in the oceans. This video comes near the middle of the semester, so there may be terms with which the audience is unfamiliar. For a full playlist, refer to the Oceanography playlist on the Earth Rocks! CZcams Channel. Content within this video is based on information avail...
Protractor Measurements
zhlédnutí 2,1KPřed 3 lety
Review of how to use protractors to determine bearing between two points and format those as a geologist or oceanographer would (as well as how to measure dip for geologists). Designed for students in oceanography and geology lab classes at City College of San Francisco. If you are an earth science enthusiast and would like to support our ongoing video development and engage with us behind the ...
Collecting Fouling Organisms Princeton Harbor
zhlédnutí 560Před 4 lety
Collecting Fouling Organisms Princeton Harbor
Pillar Point Underwater Scenes of Seaweeds
zhlédnutí 711Před 4 lety
Pillar Point Underwater Scenes of Seaweeds
Wouldn’t Pb still decay at the same rate, no matter the amount of weathering? That’s kind of the point of using a certain mineral as diagnostic testing, isn’t it? That they can reliably decay at a certain rate!?! Or do they use something else like chromite for weathering?
Yes, Pb would continue to decay at the same rate. However, once a mineral has experienced weathering, it is no longer a closed system. Parent and daughter could have been added or lost. Thus it is not possible to rely on the ration of Parent: Daughter to determine how much time has passed.
@@EarthRocks thank you!
Can someone help me how to saved this video in my phone?please
I don’t think this is very clear at all. The video does refer at one point to “the sun hitting the Earth at 90deg” and later “the North Pole is further away”. I don’t think it is ever clarified fully that it is not the distance from the Sun, but the angle of presentation that creates the seasons. The OU used to explain this by using a slide projector (I know, you have to be old enough - think of a data projector), where if you angled this from the side some of the image would go beyond the screen on to the wall. This loss of image on the screen directly relates to how much sunlight, and subsequently heat, is reduced.
Thank you for your feedback. You are correct that in this short video, I focus on the Earth tilting towards and away from the Sun. I highlight locations and times where the sun hits directly at 90° and where it is fully present or never present (Arctic and Antarctic circles). I do indicate that direct sunlight provides the most intense sun and heat, but I do not discuss how sun hitting at an angle less than 90° is more dispersed over a larger area on a spherical object (Earth) and thus provides less overall heat. It would be a good addition for a new version. I will add it to my list. Nonetheless, I do focus at the start on rebutting the idea that the Earth's distance from the Sun has any impact on the seasons. Perhaps because it comes at the start, it was less impactful for you, who were looking for it later on? Here is the script: docs.google.com/document/d/1GgnE_BJbENVlFSODx4M4HuNH5yv9fRlX7emCwvvIVD0/edit?usp=sharing **I will create a new version eventually, so I appreciate the feedback.
Thanks for rapid response and positive comments. I was indeed aware of the earlier rebuttal regarding distance being a factor, but I feared there may be a disconnect from later discussion for some viewers.
Thank you so much for the information. It helps all of us understand global warming areas and times of the year.
Earth Rocks gets an "A" for first rate teaching. The best mode of learning measurement at the K-12 level used to be shop classes. The disaster of the Gates Common Core Curriculum over the last 20 years has destroyed shop classes and other hands-on learning such as Home Economics. I witnessed years of students who did not master things as basic as a twelve-inch ruler. They had no concrete grasp of measurement because the curriculum became based on increasing levels of abstraction. This lack of basics has had dire consequences when these students show up in higher education.
Schweet
Minerals aren't like pens. Sand would be better for illustration. Awesome video. As Shawn Willsey calls them a general term, sexy rocks 😂
Thank you for your feedback. 😀 Note: unfortunately sand wouldn’t show foliation. It’s equidimensional. To see foliation, you need an elongated mineral like actually actinolite or kyanite or hornblende. These have shapes similar to pens. Or flat planes like micas (and paper). Only these will align when put under pressure.
Close to perfection to understanding 🙏
8 years ago in South Africa there was a boy getting ready to write his final examination in matric on Geography, he wasn't good at science and his marks where hanging on to dear life, and it all came down to geography. So he studied and studied and he came across this very same video, but he ignored it because what are the odds of this being asked in the paper, Question 5.2.1 what season is in the Southern hemisphere during September😂😂, long story short i passed my exams and guess what job i chose, a geography teacher. So every now and then when its time to teach about this very same topic, i just open youtube look for this very same video and let you work your magic. Works everytime
What a fabulous story. Thank you for sharing it! Makes my day. ❤️
Why is a Tsunami on the open ocean a shallow-water wave?
Because to a tsunami (from its perspective), the ocean seems like a shallow puddle. The wavelength of a tsunami is about 200 km. It thus feels bottom at 100 km depth. Anything shallower than 100 km is dragging on the tsunami wave energy and showing it down. The deepest part of the ocean is only 11 km.
Xd
My favorite seasons are all of them i like all seasons in fact
Why don't we use concept like east pole and west pole
Because the earth is a spinning sphere, and it spins around a single axis that has two ends -- one north and the other south. There is no east and west spinning pole!
Can you give me reference paper on this topic, it’s really amazing to know about this topic! Keep it up, nice content.
Nothing other than the chemistry and oceanography textbooks already referenced in the introduction. I think the content of this video has been fairly well understood for so long that there are no recent articles/reference papers. However, if you have a more specific question you're trying to address, please share. Glad you enjoyed it. :)
excellent informational video
This video is good.
Thank you for the beautiful video and overall for the information!!!
another high quality earth rocks! video
Excellent tutorial. Thank you. Just what I was looking for.
No one can ever convince me there is no God.
Of course not, as indoctrinated clowns such as yourself are only too happy to believe in fairy tales.
Pov:U often watch on youtube and that's why you got the top of ur school
It actually takes 365.256 days for the earth to orbit the Sun. 2024 being a leap year.
That was FUN , Love the thinking music too :)
Why on earth (lol) was I taught in school that the earth literally tilted like a plane wing for the seasons?
'Teachers' frequently teach subjects that they have no clue about.
Thank you for your concise explanation that was remarkably easy to understand. Well done.
Excellent synopsis.
Me, an introvert, traveling to the north in january and south in july so i can remain in darkness and solitude.
Thank you
After 9 years,still perfect!
good lecture
amazing stuff!
Thanks!
You're very welcome. Thank you! :)
Thank you for the information. It was so helpful. ❤️ I could understand it so much better in just 5 mins because of this video
If the earth had zero tilt, what would the moon location be in the earth sky
The location of the moon would be in a different position as it travels in the sky. Why are you asking this question anyway?
@@sailorman8668 The sun would give 12 hours of sunshine to every country, as it did in the green planet, wasn't sure if it had an effect regarding the moon and the earth.
so is earth tilted to left (as in video 0.25 to 0.30 shows) or tilted right(as in most of the video shows)?. I think Left side! because Vancouver vs Halifax, NS. Means west is more tilted downwards as if earth is tilted/bent to the left and because of that Vancouver has more semi tropical plants/jungles than East end Halifax! if we tilt the globe to left then it shows how Vancouver faces more sun than Halifax! One more point In 2024 and still, why we do not have live camera view of earth from space? to see tilt, seasons, etc.
It depends on your viewpoint, as to which way the earth is tilted.
Although this presenter implies it, it can be properly inferred that the current Sierra Nevada is its 2nd generation. Those stranded bodies of older metamorphic rocks atop later granitics are commonly mentioned as "roof pendants". While subduction conveyance provided magmatic feed for most recent uplift, the huge graben of the Owens Valley along the eastern flank of the Sierra Nevada portrays the crustal extension that aligned Mono-Inyo Craters and Mono Lake with the Long Valley Caldera. Also, while not mentioned, California's Transverse Ranges (10-11,000-ft.), which are physiographically the northern border of the Greater Los Angeles Basin, are strong indications of a distinct inland tectonic vector, approximately pushing Los Angeles toward Las Vegas. Also, the Cascadia Subduction Zone, which is offshore from NorCal, Oregon, & Washington, hosted a 9.0 quake in 1700 (tsunami registered in Japan), before Europeans began to venture into that region.
Born to have fun, forced to take a geology class. Your information is good, no knocks.
Pause Now ❤
What is equinox
its the time of the year when day and night are approximately equal length. it happens twice a year. once in september once in march.
Do you actually not know how to do a 'google search'?
Hey mam can I contact you like do you have any social accounts
kwiese@ccsf.edu
What kind of ice cream is served at a hydrologists awards dinner ? A Cone of depression. …
This is my class! :)
Thank you .
Thank lots for sharing 👍 💚 ❤️ 💙
Huh, I understand that season's are explained by the tilt of the earth. However, if the sun isn't at the centre of the ellipse, surely the winter in the Northern hemisphere is warmer than winter in the southern hemisphere. I guess light only travels in straight lines so the sun won't rly be hitting areas that don't face it. But I still feel like proximity to a giant ball of fire and gas must affect temperature to some degree?
The Earth’s global mean temperature doesn’t increase when the Earth is closest to the Sun because the very large heat capacity of the Southern Ocean around Antarctica is very slow to respond. Meanwhile the Northern Hemisphere land masses tilted away from the Sun cool rapidly during their winter pulling the global mean temperature down as incident energy from the Sun increases. Thus low heat capacity leverage of the Northern land masses affects temperature measured by thermometer more than changes in total solar irradiance during the Earth’s passage around the Sun.
Amazing
Very good video
Hi
I wonder why they didn't mention the names of these distances. Like when the earth is closest to the sun is called Perihelion and when the earth is farthest from the sun is Aphelion. Is like only two helios or sun seasons in a year. Either close or far.
I wonder why you failed to notice where reference was made in the video at time 0:52, where both 'Perihelion' AND 'Aphelion' were shown in the diagram of the earth's orbit around the sun?
Excellent