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Grade 7 · Astronomy & space

Grade 7 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 observationIn the Moon’s cycle of phases, which phase comes right before the full moon?
2Sky observationAbout how long does Earth take to spin once on its axis?
3Sky observationA diagram divides one full rotation into 24 equal parts. How many degrees are in each part?
degrees
4Sky observationIn the Moon’s cycle of phases, which phase comes right after the waning crescent?
5Solar systemWhich planet is farthest from the Sun?
6Solar systemWhich planet is closer to the Sun: Mars or Jupiter?
7Solar systemWhich is a giant planet: Mercury or Neptune?
8Solar systemTwo model orbit radii are 3 AU and 9 AU. Find the larger-to-smaller radius ratio.
9Space scienceA rover has a mass of 39 kg on Earth. What is its mass on the Moon?
kg
10Space scienceGravity on Mars is about 0.38 times as strong as on Earth. A lander weighs 1480 N on Earth. About how much would it weigh on Mars? Round to one decimal place.
N
11Space scienceGravity on the Moon is about one-sixth as strong as on Earth. A toolbox weighs 90 N on Earth. About how much would it weigh on the Moon?
N
12Space scienceA lander has a mass of 52 kg on Earth. What is its mass on the Moon?
kg