Rocks and Minerals

Rocks that form from the solidificatin of molten rock.

• Sedimentary

• Metamorphic

• Igneous

• Minerals

Igneous rocks that form under the surface are

• intrusive

• extrusive

• intermediate

• lava

magma cools slowly allowing for the crystals to be

• small

• medium

• large

This is a natural glass that forms when lava cools rapidly

• rhyolite

• granite

• pumice

• obsidian

Which is an intrusive rock?

• magma

• lava

Pick the rocks that are intrusive:

• diorite

• granite

• andesite

• gabbro

PIck the rocks that are extrusive:

• obsidian

• ryolite

• granite

• pumice

PIck the rocks that are intrusive:

• granite

• basalt

• diorite

• gabbro

PIck the rocks that are extrusive:

• andesite

• balalt

• ryolite

• gabbro

This rock is less dense than water and will float

• andesite

• pumice

• obsidian

• basalt