Unit Two Earth History Terms Crossword
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Down:
2) below surface, form LARGE crystals3) when weather (wind, temperature, air, water, gravity, ect...) breaks down rocks into sediments.4) chemicals (acids) in rain that cause erosion, and break down rocks. Natural or pollution6) the way things happen today (like rocks changing form) is the way they happened in the past8) a lot of erosion or movement of sediment at one time (rock slide, mudslide)10) slow, but constant formation and destruction of rocks and rock material12) 5% all rocks on Earth! Rocks formed when layers of sediment are compacted and cemented 16) a scientist who studies the history of the Earth (uses observations and inferences) |
Across:
1) the "glue" that holds sediment together in sandstone (sedimentary) 5) a small representative piece of rock7) erosion caused by water freezing (expanding) and thawing (shrinking) repeatedly 9) rocks formed from other rocks by heat and pressure11) when rocks and the land break down (erode) because of weathering, movement of sediments13) a logical conclusion based on observations and past experience14) depositing of sediments from heaviest to lightest15) above surface,forms SMALL crystals17) information gather directly by using one of more of your five sense 18) rocks forms when molten material from underneath the Earth comes to the surface and cools |
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