Grade R science · E.11 · Earth materials
Rock properties
Rocks can be big or small, smooth or rough, and heavy or light. You can tell by touching or lifting them.
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Maya and Sam are curious. Which rock feels heavy in your hand?
- The big granite rock (right)
- The smooth river stone
- The broken piece of sandstone
Maya wonders: Which rock feels smooth when you touch it?
- Sandstone (right)
- Granite
- Basalt
Ana wonders: Which rock feels smooth when you touch it?
- Quartz
- Sandstone (right)
- Granite
Tip: Rocks can be big or small, smooth or rough, and heavy or light. You can tell by touching or lifting them.
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