Rotation | Grade 5 | Unit 4 - Concept 2 - Lesson 2 | Science

شرح ساينس الصف الخامس الابتدائي لغات - الفصل الدراسي الثاني
شرح ساينس خامسة ابتدائي - ترم ثاني
لينك تحميل الملزمة
drive.google.com/file/d/1IiaV...
لينك تليجرام
t.me/mrahmedelbashagroup
In This Lesson:
Cycle of day and night
► Cycle means a series of events that is repeated in the same order for example:
- The cycle of day and night.
- The cycle of seasons.
► Earth rotates counterclockwise on its vertical axis that passes through the two poles of Earth causing the cycle of day and night.
Solar system
• Solar system includes the Sun and eight planets that revolve around the Sun in fixed orbits.
• Jupiter is the fastest planet that rotates on its axis in the solar system (Jupiter is one of the eight planets of solar system).
Sunrise and Sunset
• Earth revolves around the Sun in an elliptical orbit (oval path).
• Earth is slightly tilted on its axis.
•As Earth revolves around the Sun, the angle of tilt changes throughout the year.
• The Sun appears to travel across the sky at slightly different speeds each day due to:
- The elliptical orbit of Earth.
- The tilt of Earth on its axis.
So, the two reasons above cause different sunrise and sunset times each day on Earth.
بالتوفيق
مستر احمد الباشا