Question

What are the effects of rotation and revolution?

Answer 1

Instructions: It is a conceptual question.

Solution:
Rotation:

• The rotation of the earth causes day and night.
• As the earth is spherical in shape, only one half of it is illuminated by the sun at a time. The other half remains dark.
• The illuminated portion of the earth experiences day and the other part of the earth experiences night.

Revolution:

• The movement of the earth around the sun is called revolution.
• The revolution of the earth causes seasons.
• The revolution of the earth gives the impression that the sun is moving north and south of the equator.
• The equator faces the Sun directly on March 21 and September 23.
• During these two days the day and night are equal throughout the earth.
• These two days are called Equinoxes.
• On June 21, the Tropic of Cancer faces the sun. This is known as the summer solstice. It is the longest day in the Northern Hemisphere and longest night in the Southern hemisphere.
• On December 22, the Tropic of Capricorn faces the sun. This is known as the winter solstice. It is the longest day in the Southern Hemisphere and longest night in the Northern hemisphere