Movement of the Earth

As the earth spins, the dark half slowly starts moving towards the sun and the bright half stars moving away from the sun. So, day gives way to night and night, to day.

Image via Wikipedia

Earth rotates from west to east. Therefore sun appears to move from east to west. It takes 24 hours for the earth to complete one rotation.

Any thing that rotates moves around a central line called its axis of rotation.

You can see the axis of the merry-go- round. It is the pole around which it rotates.

Rotation of the earth on its axis causes day and night.The axis of the earth is the imaginary line passing through the two poles. It is titled.The axis of the earth is the imaginary line passing through the two poles.It certainly does, as do all the other planets.The earth is shaped like an orange, flattened at the poles and bugling at the equator.If you throw it spinning into the air it again moves around a central line.If you hold an orange between finger and thumb and turn it round with the other hand it moves around a straight line from your finger to thumb- in other words, it moves as if around an invisible rod.In some spinning bodies the axis is not visible. We have to imagine it.

Experiment

Place a light candle on a table. Slowly spin a ball in front of it, on the table. The side of the ball facing the candle will always be lit up. The side facing away from it will always be dark.

In the same way, the side of the earth facing the sun will always be lit up and it will be daytime there. The other side will be in darkness and it will be night there.

As the earth spins, the dark half slowly starts moving towards the sun and the bright half stars moving away from the sun. So, day gives way to night and night, to day.

When it is day for one half of the earth, it is night for the other half. When we are up and moving about doing our work, people in America are fast asleep. When it gets dark here and we go to bed, in America the day has just begun.

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One Response to “Movement of the Earth”
  1. n.rangamma Says...

    On October 11, 2009 at 8:26 am

    our earth is wonderful.


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