The stars appear to twinkle. Give reason.

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Solution

The twinkling of stars in our night sky is down to the Earth's atmosphere. As light from the stars travels towards Earth it can easily move in a straight line, but once it starts travelling through the Earth's atmosphere it gets bounced around in different directions by the particles in the air. This is because refraction.

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The twinkling of stars

Give reasons.

(1) The sky appears dark instead of blue to a person located in space.

(2) Stars twinkle at night.

(3) The sun appears reddish early in the morning.

(4) It is possible to enjoy a rainbow at fountains in any season.

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