Please answer all of the following: 1. When a dam is constructed upstream, what

Question

Please answer all of the following:

1. When a dam is constructed upstream, what happens to the coastline below: a. Barrier islands form b. Spits are developed c. Beaches become narrower d. Beaches become wider

2. 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

3. 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

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

5. Flooding along a coastline is most often caused by: a. Tsunami b. Levee failure c. Storm surge d. Vegetation

Explanation / Answer

ANS1) C---- THE BEACHES BECOME NARROWER .

ANS 2) TRUE -- Both beaches have weathered valconic coarse grains ( sand)

ANS 3) TRUE --- The earth is currently in an inter glacial phase &it began about 2.8 millions yrs ago .that is at start of pleistocene& last glacial period.

ANS4) A -10 YRS --As Methane is a potent green house gas & its effect is for a short period.

ANS5) A-- TSUNAMI

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