Rocks and Minerals class 5

The following rock is formed when lava cools

• Igneous rock

• Sedimentary rock

• Metamorphic rock

Minerals are natural substances that are found in solid state.

• True

• False

A __________ is a raised surface of the Earth through which magma flows out.

• Pumice

• Volcano

• Sedimentary

The following is an igneous rock which is glass- like and has sharp edges.

• Obsidian

• Pumice

• Sand stone

This is used to polish furniture, clean floor and as a body scrubber.

• Basalt

• Pumice

• Obsidian

Sand stone, conglomerate and limestone are examples of

• Igneous rock

• Metamorphic rock

• Sedimentary rock

Rock that is formed mainly from the layers of fragments of existing rocks that settle in the sea or lakes.

• Igneous rock

• Sedimentary rock

• None of these

Marble is formed from

• Sand stone

• Lime stone

The only rock that floats on water and is used by dentists for polishing teeth.

• Pumice

• Quartzite

• Shale

Diamond, Ruby, Topaz and Opal are examples of

• Rocks

• Gemstones

• Ores