1. Spits form off of a headland due to increased energy along the longshore curr

Question

1. Spits form off of a headland due to increased energy along the longshore current and deposition of sand as a result. a. True b. False

2. The most common reason for sand on the California coastline is erosion of the land next to the beach. a. True b. False

3. Sand along the Lake Tahoe shoreline and the Santa Cruz shoreline look the same due to the sand in both regions having the same source rock. a. True b. False

4. According to the lecture, we are currently in an ice age and have been for the last 2.8 million years. a. True b. False

5. According to the lecture, methane stays in the atmosphere for how long? a. 10 years b. 100 years c. 1000 years d. Forever

Explanation / Answer

Answer 1:  True. Long shore currents are waves which meet the shore at an oblique angle- depositing sediments with every current.  Along with this, the long shore drift creates a gradual but steady progression of deposits of sand which over time, causes a Spit.

**Question 2: Can you please reconfirm this question? California’s sand cover is actually disappearing because of the erosion due to sea level rise. If the question is correct, the answer is true because erosion of coastal rock causes sand deposition no matter where the location is.

Please post other questions separately since they need detailed explanations.

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