Grade 4 science · C.1 · Earth and its changes
Weathering and erosion
Weathering breaks rock into smaller pieces. Erosion moves those pieces to new places.
See worked examples
Eli sees small rocks near a riverbank. They were not there last week. What caused them to move?
- Wind blowing
- Sun heating
- Erosion (right)
Ravi notices a large boulder has smaller pieces around it. What process broke the rock?
- wind
- rain
- weathering (right)
Sam sees small rocks near a riverbank. They were not there last week. What caused them to move?
- Erosion (right)
- Wind blowing
- Sun heating
Tip: Weathering breaks rock into smaller pieces. Erosion moves those pieces to new places.
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