Worked example
Water freezes in a rock crack and helps split a piece off. Which process breaks the rock?
Answer & why
Answer: weathering
The rock is broken into smaller pieces in place.
Grade 2 · Science
Distinguish breaking, moving and settling earth materials
Distinguish weathering, erosion and deposition using simple observed changes.
6 authored questions + worked example
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All questions
All 6 authored questions for this skill.
Question 1
The stream slows, and sand settles onto its bed. Which process occurs?
- deposition
- erosion
- no earth-material change described
- weathering
A hint
Weathering breaks earth materials into smaller pieces.
Answer & why
Answer: deposition
The transported grains settle and accumulate.
Question 2
Wind lifts and carries dry soil from a field. Which process moves the soil?
- weathering
- deposition
- erosion
- no earth-material change described
A hint
Weathering breaks earth materials into smaller pieces.
Answer & why
Answer: erosion
Wind transports the soil to another place.
Question 3
A plant root grows into a crack and breaks a rock apart. Which process breaks the rock?
- deposition
- weathering
- no earth-material change described
- erosion
A hint
Weathering breaks earth materials into smaller pieces.
Answer & why
Answer: weathering
The root helps physically break rock in place.
Question 4
Wind slows behind a fence, and blowing sand falls into a pile. Which process makes the pile?
- erosion
- weathering
- no earth-material change described
- deposition
A hint
Weathering breaks earth materials into smaller pieces.
Answer & why
Answer: deposition
The sand is deposited when it stops being carried by the wind.
Question 5
Water freezes in a rock crack and helps split a piece off. Which process breaks the rock?
- erosion
- deposition
- weathering
- no earth-material change described
A hint
Weathering breaks earth materials into smaller pieces.
Answer & why
Answer: weathering
The rock is broken into smaller pieces in place.
Question 6
A stream carries loose sand downstream. Which process moves the sand?
- no earth-material change described
- erosion
- deposition
- weathering
A hint
Weathering breaks earth materials into smaller pieces.
Answer & why
Answer: erosion
Erosion transports sediment away from its earlier location.