8th Grade Science Word Scramble
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Question | Answer |
weathering | the natural process by which atmospheric and environmental agents, such as wind, rain, and temperature changes, disintegrate and decompose rocks |
physical weathering | the mechanical breakdown of rocks into smaller pieces that is caused by natural processes and that does not change the chemical composition of the rock material |
release of pressure | pressure is released: rock cracks like an egg shell |
ice wedging | water fills in the cracks of rocks and freezes and pushes a rock apart |
animal reasons | burrowing: animals digging holes |
plant growth | plants pushing rocks apart as roots grow |
abrasion | process by which rock is reduced in size by the scraping action of other rocks driven by water, wind, and gravity |
chemical weathering | the chemical breakdown and decomposition of rocks by the natural processes in the environment |
oxidation | chemical reaction in which a material combines with oxygen to form a new material |
acid precipitation | CO2 + rainwater |
sediments | small, solid pieces of material from rocks or living things |
glacier | a large mass of ice that exists year round and moves over land |
deposition | the process in which material is laid down |
delta | a mass of material deposited in a triangular or fan shape at the mouth of a river or stream |
alluvial fan | a fan-shaped mass of material deposited by a stream when the slope of the land decreases sharply |
sedimentary rock | a rock that forms from compressed or cemented layers of sediment |
Created by:
SSC 8th LA
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