Year 2 science · D.5 · Earth materials
Water and rock
Rivers wear down rock slowly over many years, cutting deep paths that become valleys between hills or mountains. This process is called erosion.
See worked examples
Jonah and Maya see a river cutting through stone. What does this show?
- Rivers grow trees
- Rivers change Earth's surface (right)
- Rivers create energy
In science class, Omar asks: A river flows through a mountain and makes a deep path. What does this path become?
- A rock
- A hill
- A valley (right)
Kai wonders: How does water change the shape of rock over time?
- It makes new plants grow
- It carves a valley (right)
- It melts ice
Tip: Rivers wear down rock slowly over many years, cutting deep paths that become valleys between hills or mountains. This process is called erosion.
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