Question

b) i) How day and night are formed?
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Answer 1

Answer:

The Earth orbits the sun once every 365 days and rotates about its axis once every 24 hours. Day and night are due to the Earth rotating on its axis, not its orbiting around the sun. The term 'one day' is determined by the time the Earth takes to rotate once on its axis and includes both day time and night time.

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Answer 2

Answer:

Days and nights are caused due to Rotation of the earth.

Hope you find it useful.

Lil-Zyush :-)