rocks and minerals

What are the three layers of the Earth?

• Mantle, crush and core

• Mantle, crush and coure

• Crash, core and mantle

Basalt is a type of .... rock .

• Metamorphic

• Sedimentary

• Igneous

Quartz is a silicate mineral

• False

• True

Sedimentary rocks may contain fossils

• True

• False

The hardness of quartz is ...

• 9

• 8

• 7

• 6

Corundum is a silicate mineral

• True

• False

Metamorphic rocks are formed by pressure changes

• True

• False

Granite is a type of ....rock .

• Igneous

• Sedimentary

• Metamorphic

Corundum is harder than quartz ...

• True

• False

What is the thinnest layer on Earth?

• Crush

• Mantle

• Core