ICSE Class 7 Answered

Six effects of the Earth’s rotation are:

• The rotation of the Earth causes day and night. The part of the Earth facing the Sun experiences day while the part which does not face the Sun experiences night.
• The speed of the Earth’s rotation influences the shape of the Earth. Because of the speed of its rotation, a centrifugal force is created which leads to the flattening of the Earth at the poles and bulging at its centre.
• The Earth’s rotation affects the movement of water in the oceans and is responsible for the sea tides.
• The speed of rotation also affects the movement of the wind. Due to the Earth’s rotation, winds and the ocean currents deflect to the right in the Northern Hemisphere and to the left in the Southern Hemisphere.
• It causes a difference between the times at various places on the Earth. The difference between the times of each longitude is 4 minutes.