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chapter 14

Terms in this set (11)

Particles in solar system are arranged by
diameter and composition
Asteroids
Found in asteroid belt between Mars and Jupiter
what are asterois composed of
rock, metallic, or combinations
Meteoroids
broken up asteroids
Meteors
meteoroids that enter Earth's atmosphere
Comets
have glowing tails, Composed of rock surrounded by ice
Impact Craters
Bowl shaped depressions with upraised rim, Provide evidence of meteor impacts
Simple Impact Craters
Typically small < 6 km
Complex Impact Craters
Larger in diameter > 6 km, Rim collapses more
completely, Center uplifts following
impact
Mass Extinctions
Sudden loss of large numbers of plants and animals
relative to number of new species being added
K-T Boundary Mass Extinction
Dinosaurs disappeared with many plants and animals, Set the stage for evolution of mammals
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