Weathering Review

3. The _____/thaw cycle happens a lot in cold climates
8. the physical, chemical, or biological breakdown of rocks and minerals into smaller pieces
11. Carrying away small pieces of land by wind, water, and ice
12. rock made from sediments that have been pressed together
14. weathering that happens when the minerals in rocks are chemically transformed into new materials
15. weathering that happens when the action of living organisms contribute to the break down of rocks
16. a combination of two or more minerals

1. rock that forms when igneous and sedimentary rocks are changed with heat and pressure
2. These little plants cause biological weathering
4. When rocks grind together and become rounded
5. Another name for the mushroom family, these cause biological weather
6. This cause of biological weathering is too small to see without a microscope
7. rock made from magma that has cooled
9. When oxygen reacts with iron and magnesium
10. These can grow into a crack in the rock and cause it to split
13. Weathering that happens when rock is broken down into smaller pieces by physical processes