Have you ever noticed a breeze at the beach on a hot summer day? Even if there is no wind inland, there may be a cool breeze blo
wing in from the water. This breeze is an example of a local wind. Local winds are winds that blow over short distances. Local winds are caused by the unequal heating of Earth’s surface within a small area. Local winds form only when large-scale winds are weak. In this excerpt, which sentence states the main point?
A.
Even if there is no wind inland, there may be a cool breeze blowing in from the water.
B.
Local winds form only when large-scale winds are weak
C.
Local winds are caused by the unequal heating of Earth’s surface within a small area.
D.
Have you ever noticed a breeze at the beach on a hot summer day?
C. Local winds are caused by the unequal heating of Earth’s surface within a small area.
Explanation:
This is the main idea of the excerpt. In this excerpt, we learn that local winds are caused by the unequal heating of the Earth’s surface within a small area. This is the main point in the passage because it is the one that contains the most relevant information. The author includes the rest of the information in order to make the text more compelling and interesting.
