Question

select the correct answer. lila’s grandfather lives in a region where the temperature drops below 0°f at night. when lila visited her grandfather, they hiked up a hill. lila noticed that a lot of rocks had cracks in them. she also found quite a few rocks that had split into pieces. what most likely caused the rocks in this region to weather?
a. snowfall
b. frost wedging
c. landslides
d. heavy rains

Explanation:

The region has temperatures below 0°F at night, so water in rock cracks can freeze. Freezing water expands, exerting pressure on rocks (frost wedging), causing cracks/splitting. Snowfall (A) doesn't directly weather rocks this way. Landslides (C) are a result, not a cause of rock weathering here. Heavy rains (D) are less likely as temp is below freezing, and rain would freeze, so frost wedging (B) is the main process.

Answer:

B. frost wedging