What effects can erosion have on a beach? Select the two correct answers.(1 point)
It can cause wider beaches.
It can cause narrower beaches.
It can cause an increase in sand on beaches.
It can cause higher beach elevations.
It can cause lower beach elevations.
It can cause narrower beaches and lower beach elevations.
The correct answers are:
1. It can cause narrower beaches.
2. It can cause lower beach elevations.
To determine which effects erosion can have on a beach, we need to understand the process of erosion. Erosion is the wearing away of land by water, wind, or other natural forces. In the context of a beach, erosion typically refers to the removal of sand or sediment from the coastline.
So, let's evaluate each statement:
1. It can cause wider beaches: When there is erosion, sand or sediment can be moved from one location to another, potentially leading to the accumulation of sand and creating wider beaches. This statement is correct.
2. It can cause narrower beaches: In contrast to the previous statement, erosion can also result in the loss of sand or sediment from a beach, causing it to become narrower. This statement is correct as well.
3. It can cause an increase in sand on beaches: This statement is essentially redundant with the first statement. If sand is accumulating on a beach, it means the beach is becoming wider, which we already determined as a correct answer.
4. It can cause higher beach elevations: Erosion typically involves the removal of sand or sediment, which would result in lower beach elevations rather than higher ones. This statement is incorrect.
5. It can cause lower beach elevations: As mentioned in the previous statement, erosion usually leads to the removal of sand or sediment, causing the beach to have lower elevations. This statement is correct.
Therefore, the two correct answers are:
- It can cause wider beaches.
- It can cause narrower beaches.