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Grade 5 · Astronomy & space

Grade 5 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 5 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 spin once on its axis?
2Sky observationIn the Moon’s cycle of phases, which phase comes right before the waxing crescent?
3Sky observationWhy can’t we see stars in the daytime sky?
4Sky observationIn the Moon’s cycle of phases, which phase comes right before the first quarter?
5Solar systemWhich planet is farther from the Sun: Uranus or Neptune?
6Solar systemWhich planet is often called the Red Planet?
7Solar systemWhich is a rocky (terrestrial) planet: Uranus or Mars?
8Solar systemTwo model orbit radii are 3 AU and 9 AU. Find the larger-to-smaller radius ratio.
9Space scienceGravity on the Moon is about one-sixth as strong as on Earth. A rover weighs 582 N on Earth. About how much would it weigh on the Moon?
N
10Space scienceGravity on Mars is about 0.38 times as strong as on Earth. A toolbox weighs 330 N on Earth. About how much would it weigh on Mars? Round to one decimal place.
N
11Space scienceGravity on Mars is about 0.38 times as strong as on Earth. A science instrument weighs 180 N on Earth. About how much would it weigh on Mars? Round to one decimal place.
N
12Space scienceA science instrument has a mass of 125 kg on Earth. What is its mass on the Moon?
kg