1) A huge group of stars is known as _______. a) K-pop group b) galaxies c) interstellar d) asteroids 2) What part of the Solar System do we live in? a) Universal Galaxy b) Andromeda Galaxy c) Milky Way Galaxy d) Comet Galaxy 3) What are the Terrestrial Planets? a) 4 Outer planets b) 4 Selective planets c) Trick question! There are no Terrestrial Planets d) 4 Inner planets 4) The 4 Outer Planets are also known as _____. a) Gaseous b) Terrestrial c) Snowball d) Galaxies 5) What is the amount of time that an object takes to rotate once? a) 1 year b) 12 hours c) 180 days d) 1 day 6) What percentage of your weight on Earth do you weigh on Mercury? a) 38% b) 29% c) 100% (It's the same.) d) 48% 7) How long does it take an object to revolve around the sun once? a) 1 month b) 1 year c) 1 day d) It's too hot for objects to revolve around the sun. 8) Which planets are the 4 OUTER planets? a) Mars, Jupiter, Saturn, Uranus b) Earth, Saturn, Uranus, Neptune c) Saturn, Uranus, Neptune, Venus d) Jupiter, Uranus, Neptune, Saturn 9) What planet is closest to the Sun? a) Mars b) Venus c) Mercury d) Earth 10) What percentage of your weight on Earth do you weigh on Venus? a) 38% b) 91% c) 9% d) 1% 11) What do Venus and Earth have in common? a) Both planets have moons. b) Both planets rotate in the same direction. c) Both planets have volcanoes. d) The two planets have nothing in common. 12) Name the 4 Inner Planets. a) Mercury, Venus, Mars, Jupiter b) Mercury, Mars, Jupiter, Earth c) Neptune, Uranus, Saturn, Jupiter d) Earth, Mars, Mercury, Venus 13) How long is a sidereal day (one day) on Earth? a) 12 hours, 24 min b) 23 hours, 24 min c) 23 hours, 56 min d) 24 hours, 56 min 14) What planet is home to the tallest mountain in our Solar System? a) Mars b) Mercury c) Earth d) Venus 15) Which planet is the largest in our Solar System? a) Earth b) Mars c) Jupiter d) Mars and Jupiter (both the same size) 16) How many days are in an Earth year? a) 24 b) 360 c) 180 d) 365 17) How long is one Jupiter day? a) 23 hours, 56 min b) 9 hours, 4 min c) 9 hours, 54 min d) 23 hours, 54 min 18) Which planet has the Great Red Spot? a) Mercury b) Mars c) Planets don't have red spots. d) Jupiter 19) What year was Uranus discovered? a) 1777 b) 1871 c) 1845 d) 1781 20) What year was Neptune discovered? a) 1781 b) 1846 c) 1486 d) 1777 21) Which planet is the 2nd largest in our Solar System? a) Jupiter b) Saturn c) Earth d) Mars 22) What are the parts of a comet? a) nuclues, ion tail, dust tail, rivers b) rivers, dust tail, nucleus, coma c) nucleus, rivers, dust tail, coma d) nucleus, dust tail, coma, ion tail 23) What are large pieces of space rock with irregular shapes? a) comets b) particles c) stars d) asteroids 24) What are comets also called? a) asteroid b) dirty snowball c) shooting star d) planets 25) What is another name for a meteor? a) shooting star b) bright lights c) dirty snowball d) sun rays

Planets Study Guide (8th grade)

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