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Grade 8 · Astronomy & space

Grade 8 Astronomy & space diagnostic

12 questions on solar system, space science and sky observation. Answer what you can, then check your answers to see which topics are secure and what to practise next.

12 questions3 topicsAbout 15 minutesSet 1 of 5

Skip a question if you do not know the answer. It is better than guessing, because it shows what to practise.

1Sky observationAbout how long does Earth take to travel once around the Sun?
2Sky observationIn the Moon’s cycle of phases, which phase comes right after the full moon?
3Sky observationWhat is the main cause of Earth's seasons?
4Sky observationWhy can we see the Moon shining?
5Solar systemWhich planet is farther from the Sun: Saturn or Neptune?
6Solar systemWhich is a giant planet: Saturn or Mars?
7Solar systemWhich planet spins tipped over on its side?
8Solar systemWhat kind of astronomical object is the Sun?
9Space scienceGravity on the Moon is about one-sixth as strong as on Earth. A toolbox weighs 720 N on Earth. About how much would it weigh on the Moon?
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10Space scienceGravity on Mars is about 0.38 times as strong as on Earth. A rover weighs 970 N on Earth. About how much would it weigh on Mars? Round to one decimal place.
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11Space scienceGravity on Mars is about 0.38 times as strong as on Earth. A science instrument weighs 1370 N on Earth. About how much would it weigh on Mars? Round to one decimal place.
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12Space scienceGravity on Mars is about 0.38 times as strong as on Earth. A lander weighs 610 N on Earth. About how much would it weigh on Mars? Round to one decimal place.
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