1. Weathering and Erosion Review

2. 1. Which of the following causes physical weathering?
A. Expanding ice
B. Expanding tree roots
Rocks falling on other rocks
D. All of the above

3. 2. Which statement best represents weathering?
A. Building mountains as continents collide B. Moving sediments by gravity C. Forming metamorphic rocks D. Breaking down rocks into smaller pieces

4. 3. What could cause the river’s cross section to change over a hundred years as shown below?
A. Beavers built a dam on the river
B. A volcano erupted and formed a valley
C. An earthquake made the land drop
D. Rocks and sediments were carried away by the river

5. 4. Which is an example of chemical weathering?
4. Which is an example of chemical weathering?
A. Rocks tumbling down the mountain side
B. Water freezing and thawing on a rock
C. Acids produced by lichens breaking down rock
D. Water moving downhill and hitting rocks

6. 5. Which of the following causes erosion?
A. Water
B. Win
C. Ice
D. All of the above

7. 6. The movement of rock particles by wind, water, ice, or gravity is known as…
A. Ice wedging
B. Abrasion
C. Erosion
D. Weathering

8. 7. The soil at Red Top Mountain, Georgia is mostly red
7. The soil at Red Top Mountain, Georgia is mostly red. What is the reason the soil color is red?
A. Gravity erosion changed the soil color
B. Chemicals from plant roots changed the color
C. The iron in the soil reacted with air to form rust
D. Nothing caused it. The soil has always been red

9. 8. The weathering process in which rocks are physically broken into smaller pieces and without changing the chemical composition is called…
A. Mechanical weathering
B. Gravity weathering
C. Chemical weathering
D. Acid weathering

10. A. Mechanical weathering
9. Jenny observed rust on statues and bridges. What type of weathering did she observe?
A. Mechanical weathering
B. Physical weathering
C. Chemical weathering
D. Erosion weathering

11. 10. What types of rocks are formed by weathering and erosion?
A. Sedimentary rocks
B. Igneous rocks
C. Metamorphic rocks
D. Extrusive igneous rocks

12. A. Himalayans Mountains B. Grand Canyon C. London Bridge
11. Weathering and erosion by running water over thousands or millions of years probably created which of the following?
A. Himalayans Mountains
B. Grand Canyon
C. London Bridge
D. Statue of Liberty

13. 12. Which type of climate would cause the MOST amount of weathering?
12. Which type of climate would cause the MOST amount of weathering?
A. Wet, humid, and stormy climates
B. Windy, dry, and cool climates
C. Dry, calm, and mild climates
D. Dry, hot, and windy desert climates

14. 13. Which of the following agents of erosion causes the greatest amount of erosion?
A. Water
B. Wind
C. Ice
D. Gravity

15. 14. Which statement best explains how water mechanically breaks down rocks?
A. Water expands when it freezes (Ice Wedging)
B. Water does not break down rocks
C. Acids in water react with chemicals in the rock
D. All of the above

16. 15. Which of the following things will most likely experience oxidation (chemical weathering)?
A. Rubber ball
B. Wooden fence
C. Metal bridge
D. Plastic toy

17. B. Oxygen in the air causes oxidation on the rock
16. Which statement best explains how the air can chemically break down rocks?
A. The air is very abrasive and is powerful
B. Oxygen in the air causes oxidation on the rock
C. The wind wears away on the rock
D. Air fills the cracks in the rock and breaks it

18. 17. Which of the following is an example of physical weathering?
A. Acid rain reacting with roof tops
B. Iron turning into rust
C. Ice wedging
D. Acids in water with limestone to form stalagmites

19. 18. Which is an example of physical weathering?
A. Acid rain reacting building tops
B. Tree roots expanding to break rocks
C. Lichens producing weak acids
D. Limestone changing to stalactites

20. 19. Rain, sleet, or snow that contains high concentration of acids is called
A. Oxidation
B. Acid weather
C. Acid precipitation
D. Chemical rain

21. 20. Why are the rocks at Point 3 smaller and more rounded than the rocks at Point 1?
A. Rocks at point 1 have been weathered more
B. Rocks at point 3 are larger than rocks at 1
C. Rocks at point 3 have been weathered more than at 1
D. Rocks at point 1 are softer than rocks at 3