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# Class6 Earth Rotation And Revolution

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### Class6 Earth Rotation And Revolution

1. 1. Presentation Made By:-Mudit Singh Vats Class - 6 th A, Roll No.-24 Motions of the Earth
2. 2. Motions of the Earth <ul><li>THE EARTH HAS TWO TYPES OF MOTION </li></ul><ul><li>ROTATION </li></ul><ul><li>REVOLUTION </li></ul>
3. 3. <ul><li>ROTATION </li></ul>Earth rotates on its axis as it revolves around the Sun . REVOLUATION Motions of the Earth
4. 4. Rotation of the Earth <ul><li>The motion of the earth about its axis is known as rotation. </li></ul>
5. 5. <ul><li>The direction of this movement varies with the viewer’s position. </li></ul><ul><li>From the North Pole the rotation appears to move in a counter-clockwise fashion. </li></ul><ul><li>Looking down at the South Pole the Earth’s rotation appears clockwise. </li></ul>Rotation of the Earth
6. 6. <ul><ul><ul><ul><li>The Earth rotates once in twenty-four hours. </li></ul></ul></ul></ul><ul><li>The Earth’s rotation is responsible for the daily cycles of day and night. </li></ul><ul><li>At any one moment in time, one half of the Earth is in sunlight, while the other half is in darkness. When the earth rotates we get day and night. </li></ul><ul><li>The edge dividing the daylight from night is called the circle of illumination. </li></ul>Rotation of the Earth
7. 7. <ul><li>Rotation dictates the length of the diurnal cycle (i.e., the day/night cycle) </li></ul><ul><li>The earth rotates on an axis that is tipped over at about 23.5 degrees. </li></ul><ul><li>Earth rotates at approximately 15 angular degrees per hour. So, the Earth's surface moves at the equator at a speed of about 467 m per second or slightly over 1675 km per hour. </li></ul>Rotation of the Earth
8. 8. The earth revolves around the sun in an elliptical orbit. Revolution of the Earth
9. 9. <ul><li>It takes 365 days and 6 hours to complete one revolution. </li></ul><ul><li>The distance between the earth and the sun changes due to revolution. </li></ul><ul><li>This change of distance also causes change in seasons. </li></ul>Revolution of the Earth
10. 10. <ul><li>The earth revolves in an elliptical shape. </li></ul><ul><li>As the Earth revolves it gets closer and farther away from the sun. </li></ul><ul><li>The angle that the sun hits the Earth causes the seasons. </li></ul>Revolution of the Earth
11. 11. Thanks