Processes Shape Materials Practice Test

A student says: “Weathering and erosion are the same thing because both make rocks smaller.” A paired model is shown:

Model X: Rock breaks into smaller pieces, but pieces remain in place.

Model Y: Pieces are carried by running water to a new location.

Both models note: “This happens over time.” Which statement best evaluates the student’s claim using the models?

A stream model shows this sequence over time:

(1) Rock on a riverbank becomes smaller pieces (sediment) while staying on the bank.

(2) Later, those pieces are carried downstream and deposited in a sandbar.

Arrows are labeled: step (1) “weathering” and step (2) “erosion.” Which statement is supported by the model?