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- 1. Multiple Choice
In the diagram of the solar system, where is the big gap that bugged astronomers?between Mars and Jupiterbetween Jupiter and Saturnbetween Saturn and Uranusbetween Uranus and Neptune - 2. Multiple ChoiceGiuseppe Piazzi's discovery, the first known asteroid, was named _____CeresVestaLutetiaGaspra
- 3. Multiple ChoiceThe word 'asteroid' literally means _____little dotstar-liketiny pointbrilliant one
- 4. Multiple ChoiceHow many asteroids have been discovered to date?450thousandstens of thousandshundreds of thousands
- 5. Multiple ChoiceIn our solar system, there are probably over a million asteroids larger than _____1 km in size10 km in size100 km in size500 km in size
- 6. Multiple ChoiceWhat percentage of asteroids are carbonaceous, which means they have lots of carbon in them?35%55%75%95%
- 7. Multiple ChoiceOne sixth of the asteroids are silicon-based rock, and are called _____.silicaceousstoneymetalloidsSA Type
- 8. Multiple ChoiceSo many asteroids orbit the sun between Mars and Jupiter that this region is now called _____the central regionthe M-J dividethe Kirkwood Gapthe main belt
- 9. Multiple ChoiceAsteroid deserts, or gaps in the main belt, are a result of _____tugs from Jupiter's gravitycollisions with other asteroidsdefects during formationinteractions with inner planets
- 10. Multiple ChoiceOn average, how far apart are decent-sized asteroids?dozens of kilometers aparthundreds of kilometers apartthousands of kilometers apartmillions of kilometers apart
- 11. Multiple ChoiceCeres, the largest object in the main belt, is about _____ across9 km90 km900 km9000 km
- 12. Multiple ChoiceCeres has a water-ice mantle which probably contains _____more than all the water on Earthalmost as much water as on Earthmore than all the freshwater on Earthalmost as much as the freshwater on Earth
- 13. Multiple ChoiceWhat is the term for a solid, such as the ice on Ceres, turning directly into a gas?sublimationcondensationdepositionevaporation
- 14. Multiple ChoiceWhat is the name of the third largest, but second most massive, known asteroid?CeresVestaLutetiaGaspra
- 15. Multiple ChoiceWhat's the specific name for a roundish object that's like a ball, but squished from above?paraboloidprolate spheroidoblate spheroidellipsoid
- 16. Multiple ChoiceCleopatra, a weird dog-bone shaped rock, has _____no moonsone moontwo moonsthree moons
- 17. Multiple ChoiceIn astronomy, individual rocks held together by their own gravity are called _____a rubble pilea gravel heapa cracked rocka coalesced monolith
- 18. Multiple ChoiceAsteroids that have orbits that cross the orbit of Mars are called _____inner belt asteroidsred path asteroidsmartian transitsMars-crossing asteroids
- 19. Multiple ChoiceAsteroids that cross Earth's orbit, but still reside mostly outside it, are called _____inner belt asteroidsApollo asteroidsAten asteroidsEarth-crossing asteroids
- 20. Multiple ChoiceAsteroids that have orbits that are almost entirely inside Earth's orbit are called _____inner belt asteroidsApollo asteroidsAten asteroidsEarth-crossing asteroids
- 21. Multiple ChoiceThe points along a planet's orbit where the gravitational forces are in balance are called _____Lagrange pointsTrojan pointsNewton pointsEtan points
- 22. Multiple ChoiceAsteroids that sit at Lagrange points of planets are called _____Greek asteroidsTrojan asteroidsAchilles asteroidsEtan asteroids
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