Physics, 11.01.2021 21:30 kahliey

_∆ 1. Erosion is / is not caused by water, ice, wind, chemicals, and sand. (pick one) ∆ 2. The process of causes rocks on the Earth’s surface to change, crumbling mountains
and widening valleys.
∆ 3. When solids / liquids are carried away by water, it is also considered a form of erosion. ( pick one)
∆ 4. When liquid water in rock it expands and causes rocks to erode by cracking them.
∆ 5. When rain combines with in rock, it forms rust, which is a form of chemical erosion.
∆ 6. When softer rock erodes faster than the harder rock above, sometimes a(n) is formed.
∆ 7. Wind sometimes picks up sand / boulders and blows them into rocks causing the rock to erode. ( pick one)
∆ 8. Erosion is the slow wearing away of the earth’s over millions of years.
∆ 9. When are hit by waves over thousands of years, a beach of sand is formed.
∆ 10. Sand, and waves hit rocks and smooth out the surface of older rocks.
∆ 11. can hold back soil from eroding and also break rocks apart – causing erosion.
∆ 12. Water flows into cracks of rocks and shrinks / expands when it freezes causing the rock to crack. (pick one)
∆ 13. As water flows over rocks, it dissolves minerals causing different to sometimes appear.
∆ 14. Pounding water, wind, and rain are major causes of erosion.
__ ∆ 15. Chemicals in the air / plants contribute to erosion. (pick one)

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