Presentation Made By:-Mudit Singh Vats Class - 6th A, Roll No.-24

Motions of the EarthMotions of the Earth

THE EARTH HAS TWO TYPES OF MOTION ROTATION REVOLUTION

ROTATION

Earth rotates on its axis as it revolves around the Sun.

REVOLUATION

Motions of the EarthMotions of the Earth

Rotation of the EarthRotation of the Earth

The motion of the earth about its axis is known as rotation.

The direction of this movement varies with the viewer’s position.

From the North Pole the rotation appears to move in a counter-clockwise fashion.

Looking down at the South Pole the Earth’s rotation appears clockwise.

Rotation of the EarthRotation of the Earth

The Earth rotates once in twenty-four hours. The Earth’s rotation is responsible for the daily cycles of day and night. 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.The edge dividing the daylight from night is called the circle of illumination.

Rotation of the EarthRotation of the Earth

Rotation dictates the length of the diurnal cycle (i.e., the day/night cycle) The earth rotates on an axis that is tipped over at about 23.5 degrees.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.

Rotation of the EarthRotation of the Earth

The earth revolves around the sun in an elliptical orbit.

Revolution of the Revolution of the EarthEarth

It takes 365 days and 6 hours to complete one revolution. The distance between the earth and the sun changes due to revolution. This change of distance also causes change in seasons.

Revolution of the Revolution of the EarthEarth

The earth revolves in an elliptical shape.

As the Earth revolves it gets closer and farther away from the sun.

The angle that the sun hits the Earth causes the seasons.

Revolution of the Revolution of the EarthEarth