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Astronomy - Unit 2

Objects in the Universe - Meteors, Comets, Asteroids and Moons

QuestionAnswer
Meteor small rock that orbits the Sun
Meteorite natural rock from space that survives its fiery passage through a planet's atmosphere and lands on the surface
Meteor the streak of light in the sky that you see when a meteoroid enters Earth's atmosphere and burns up due to air friction, causing it to glow.
Shooting Star a nickname for a Meteor
Mesosphere The layer of the Atmosphere where meteors occur
Meteor Shower Earth passes through a trail of debris left by a comet or fragments of asteroids.
Fireball a meteor that is brighter than the planet Venus
Hoba Meteorite The largest meteorite ever found
Antarctica and the Desert Good places to find Meteorites
Comet icy bodies with glowing tails that orbit the Sun.
Kuiper Belt A place where comets can be found outside of Neptune
Oort Cloud spherical shell of icy comets and space debris located far beyond the Kuiper Belt
Dirty Snowball a nickname for a comet
Halley's Comet a comet that will come around again is 2061
Hale-Bopp a comet that the cult Heaven's gate thought was a sign
Asteroid rocky body orbiting the Sun between Mars and Jupiter
Asteroid Belt a location of many asteroids found between Mars and Jupiter
Ceres Largest known asteroid
NEA's asteroids that have Orbits that come near the Earth
Impact Crater depression on a planet or moon's surface formed by the high-speed collision of a smaller object, like an asteroid or comet.
Halloween asteroid an asteroid that came by October 31st 2015
Ida and Dactyl an asteroid and its moon
Chicxulub Impactor Dinosaur killing asteroid
66 million years ago How long ago scientists think the Chicxulub asteroid hit the Earth
Birds and alligators animals thought to have survived the Chicxulub impact
Moons natural satellite that orbits a planet, dwarf planet, or other celestial body.
Ganymede The largest moon in our Solar System
Io volcanically active moon in our Solar System
Triton A moon that moves in the opposite direction of Neptune’s rotation
Co-formation Theory Some moons form at the same time as their planet, from the same disk of gas and dust surrounding it early in the solar system’s history.
Giant Impact Theory A large object smashes into a planet, and the debris from the collision forms a disk around the planet.
Capture Theory Sometimes, a passing asteroid or small body gets too close to a planet and gets pulled in by the gravitational pull.
Fission Theory In rare cases, a rapidly spinning planet could fling off part of its material, which then becomes a moon.
Created by: Lmorgante
 

 



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