Motion of the earth

The circle that devides the globe into day and night is called

• Circle of darkness

• Circle of day and night

• Circle of illumination

• None of the above

The perioed of one rotation of earth is known as

• Sun day

• Earth day

• Moon day

• None of the above

Which one of the following is the source of light on earth

• Sun

• Moon

• Space

• Satellite

Motion of the earth on its axis in about 24 hours is called

• Revolution

• Rotation

• Both a and b

• None of the above

Motion of the earth around the sun is called

• Revolution

• Rotation

• Both a and b

• None of the above

A year with 366 days is called

• Normal year

• Leap year

• Both a and b

• None of the above

What will happen if earth did not rotate

• Cold conditions on earth's half surface

• Warm conditions on earth's half surface

• No life possible in such extreme climatic conditions

• All of the above

When do longest day and shortest night occure in northern hemisphere

• 21 june

• 23 September

• 22 December

• 21 march

Days and night occure on earth due to

• Revolution

• Rotation

• Both a and b

• None of the above

When do equinoxes occure on earth

• 21 march

• 22 December

• 21 june

• 21 February