Stabroek News Sunday

SCIENCE

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Do all places on Earth experience day and night at the same time? Find out.

When the Sun shines on one side of the Earth, the other side is in darkness. Have you ever known of cricket being played in any country during the day and we are listening to it being broadcast at the same time but at night? Yes, that happens when the country is on the opposite side of the Earth from us, the opposite hemisphere.

Name about five countries that experience day while we in Guyana experience night.

Revolution of the Earth

The movement of the Earth around the sun in its orbit is called revolution. This movement of the earth is also from west to east. It takes one year (365¼ days) to make this revolution.

The orbit of the Earth around the sun is elliptical and not circular. Due to this, the distance between the Earth and the sun keeps changing.

The average of the maximum and minimum distances is called the mean distance and this distance of the sun from the earth is 150 million kilometres (150 000 000 km). We have learnt quite a lot today! Until next week, keep working hard and learning as much as you can, Boys and Girls.

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