Look at a rock. It is made of minerals.
A rock can be as small as a pebble.
A rock can be as big as a mountain.
Hot rock can melt. Then it gets cold and hard.
Some rock is like glass. It is from a volcano.
Pumice is a rock with lots of holes in it.
Sand bits can stick and make a rock.
Some rock is made from shells from the sea.
Wind and rain slowly make big rocks small.
Talc is very soft.
Words to know
- pebble: small stone
- pumice: holey rock
- talc: soft mineral
