evs. revision worksheets (6)
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IV.Give reasons for the following:
1. Stars appear small and sun appears big .Why?
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2. Moon does not change its shape. Why?
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3. Earth is Known as the blue planet. Why?
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4. Stars shine and twinkle. Why?
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V.Answer the following:
1. What is constellation? Give examples.
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2. What is a solar system?
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