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When
you look up at the sky on a clear night, you see many dots of twinkling
light. Each dot of twinkling light is a star. A star is a giant cluster of
burning gases. These burning gases are very hot and give off a very bright
light. As
the light from a star shines down on earth, it passes through the air
around the earth. The air around the earth is always moving. As it moves,
it breaks up and scatters a star's light. The light seems to change in
brightness or twinkle
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No
one knows exactly how many stars there are. Many stars are so far away
from the earth that their light is very hard to see. Men who study the
stars use powerful telescopes to help them see stars better. Telescopes
have huge glass "eyes" that can see much dimmer light than your
eyes can see. With a powerful telescope you could see thousands of stars
for each star you can see with your eyes. |
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Write the word from the word bank that makes each sentence true. |
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| telescope |
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gases | twinkle | |
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1.
A star is a cluster of burning __________________ 2.
Stars are very hot and very ___________________ 3.
Moving air makes starlight seem to _____________
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