1. Define WEATHERING 180 170 160 150 140130120 110100 90 80 7060504030 20 1098765432 1 0 This screen will disappear in 3 minutes. Seconds Remaining.

2. A natural process that causes rocks to change, breaks them down, and causes them to crumble. Freezing and thawing, oxygen in the air, and even plants and animals can affect the stability of rock.

3. What types of things can cause mechanical weathering? 180 170 160 150 140130120 110100 90 80 7060504030 20 1098765432 1 0 This screen will disappear in 3 minutes. Seconds Remaining.

4. Wind Rain Ice Plants

5. What is ICE WEDGING? 180 170 160 150 140130120 110100 90 80 7060504030 20 1098765432 1 0 This screen will disappear in 3 minutes. Seconds Remaining.

6. A freezing and thawing cycle that breaks up rocks. When it rains or snow melts, water seeps into cracks in rocks. If the temperature drops below freezing, ice crystals form. As the crystals grow, they take up more space than the water did because ice is less dense than water. This expansion exerts pressure on the rocks. With enough force, the rocks will crack further and eventually break apart

7. Describe how chemical weathering differs in moist and dry climates? 180 170 160 150 140130120 110100 90 80 7060504030 20 1098765432 1 0 This screen will disappear in 3 minutes. Seconds Remaining.

8. It is rapid in tropical regions where it's moist and warm most of the time. Because desert areas have little rainfall and polar regions have low temperatures, chemical weathering occurs slowly in these areas

9. Describe the relationship between weathering and soil formation. 180 170 160 150 140130120 110100 90 80 7060504030 20 1098765432 1 0 This screen will disappear in 3 minutes. Seconds Remaining.

10. Weathering breaks rock into smaller and smaller pieces, such as sand, silt, and clay. These smaller, loose pieces are called sediment. The terms sand, silt, and clay are used to describe specific sizes of sediment. Sediment then changes gradually into soil. The formation of soil depends upon the amount of weathering that occurs in a specific place.

11. Define mechanical weathering and describe its causes. 180 170 160 150 140130120 110100 90 80 7060504030 20 1098765432 1 0 This screen will disappear in 3 minutes. Seconds Remaining.

12. Mechanical weathering occurs when rocks are broken apart by physical processes. This means that the overall chemical makeup of the rock stays the same. Each fragment has characteristics similar to the original rock. Growing plants, burrowing animals, and expanding ice are some of the things that can mechanically weather rock. These physical processes produce enough force to break rocks into smaller pieces.

13. Define chemical weathering and describe its causes. 180 170 160 150 140130120 110100 90 80 7060504030 20 1098765432 1 0 This screen will disappear in 3 minutes. Seconds Remaining.

14. Chemical weathering occurs when chemical reactions dissolve the minerals in rocks or change them into different minerals. This type of weathering changes the chemical composition of the rock, which can weaken the rock.