It's called with ... .

• stones

• boulders

• pebbles

Where you can find rocks? We can find them along rivers.

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What rain can do to rocks? It can ... .

• beats down on rocks

• toss rocks around

• blows rough grains

The stone that has spots is granite. The surface is covered with small spots. Which is granite? ... .

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The characteristic of gemstones is ... .

• they covered with small spots

• they sparkle

• they tiny

How basalt can form? ........................

In the past, rocks were used to make ... .

We can use rocks to build ... and ... .

We can polished ... and made smooth.

After many years, the rocks break down to become ..., ... and ... .