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Ch 10 Mars Part 2

Vocabulary

TermDefinition
Hematite discovery provided the first mineral evidence that Mars' history may have included water
Ejecta material thrown outward by a meteoroid impact
Gully landform created by running water, eroding sharply into soil, typically on a hillside
Permafrost layer of permanently frozen water ice lying just below the surface
Seasonal Cap portion of Mars’ polar ice caps that are subject to seasonal growing and shrinking
Residual Cap portion of Mar’s polar caps that remains permanently frozen with no seasonal variation
Meteorite any part of a meteoroid that survives entry through an atmosphere & lands on the surface
Asteroid one of thousands of smaller rocky bodies usually orbiting the Sun between Mars and Jupiter
Rift Valley linear lowland between highlands or mountain ranges created by a geologic rift or fault
Oxidation when oxygen combines with an element and changes its appearance, causing iron to rust
Dry Ice frozen, solid form of carbon dioxide
Axial Tilt inclination angle of a planet's rotational axis in relation to its orbital plane
Created by: john_bailey720
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