1) An imaginary straight line going through the centre of an object that is spinning is known as a) axis b) orbit c) North pole d) southpole 2) Day and night are caused by a) tilt of the earth's axis b) earth's revolution around the sun c) earth's rotation on its axis 3) How long does it take for earth to rotate once on its axis? a) 1 month b) 365 days c) 6 months d) 24 hours 4) which of these best describes why earth has day and night? a) the moon rotates on its axis b) Earth rotates on its axis c) earth revolves around the sun 5) When all the points of an object move in a circle around its central point is called a) revolution b) orbit c) rotation d) none of these

MOVEMENT OF EARTH---- ROTATION

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