1) why is mars important a) scientists learn about momentous shifts in climate that can fundamentally alter planets. It also lets us look for biosignatures, signs that might reveal whether life was abundant in the planet's past—and if it still exists on Mars today. b) to soak up air for taking out decomposed things out of rok c) to shift air through space d) for aliens to live e) for orbit f) for survival 2) pick the right answers (more than 1) a) The dark side of the moon is a myth b) A person would weigh much less on the Moon c) The Moon landings were real. Apollo 11 Humans set foot on the Moon 3) pick the right answers (more than 1) a) SPACE IS COMPLETELY SILENT b) THE HOTTEST PLANET IN OUR SOLAR SYSTEM IS 450° C c) THE HOTTEST PLANET IN OUR SOLAR SYSTEM IS not 450° C d) Earth is a perfect sphere e) The circumference of Earth is 24,901 miles 4) The order of the planets in the solar system a) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and then the possible Planet Nine b) Mercury, Venus, Earth, Mars, Jupiter, Uranus, Neptune c) , Earth, Mars, Jupiter, Saturn, Uranus, Neptune and then the possible Planet Nine d) Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, e) Mercury, Venus, mars earth, Jupiter, Saturn, Uranus, Neptune and then the possible Planet Nine f) none above 5) How many planets are there with rings? a) 4 b) 31 c) 13 d) 879 e) 201 f) 7

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