Here are the correct answers for each of the questions you provided:
1. **What is physical weathering?**
- **Correct Answer:** The type of weathering in which rock is physically broken into smaller pieces.
2. **What is chemical weathering?**
- **Correct Answer:** The process that breaks down rock through chemical changes.
3. **Which of the following is true of a rock buried deep in the ground?**
- **Correct Answer:** It is relatively protected from weathering, since it is not exposed to environmental elements.
4. **Which phrase best describes frost wedging?**
- **Correct Answer:** A type of physical weathering that occurs due to temperature changes.
5. **The chain link fence pictured above has developed rust over time. Rust is a form of (physical, chemical) weathering and occurs when iron reacts with (carbon, oxygen) and water. Another name for rust is (carbonation, oxidation, hydrolysis).**
- **Correct Answer:** Rust is a form of **chemical** weathering and occurs when iron reacts with **oxygen** and water. Another name for rust is **oxidation**.
6. **What type of weathering is this an example of?**
- **Correct Answer:** Physical weathering because no chemical reactions occurred.
7. **What conclusion can you make about Rock A and Rock B?**
- **Correct Answer:** Rock B has been weathered for a longer period of time than Rock A because Rock B is rounder and smoother.
8. **Identify whether each description is a form of weathering, erosion, or deposition.**
| Description | Weathering | Erosion | Deposition |
|-------------|------------|---------|------------|
| A bike is left outside and begins to rust. | ✓ | | |
| In a river, the current of water moves sediment. | | ✓ | |
| Wind blows leaves which settle into a pile at the base of a tree. | | | ✓ |
9. **Yosemite Valley in the Sierra Nevada mountains is an example of a U-shaped valley.**
- **Correct Answer:** glacial erosion.
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