Minerals & Rocks

To be classified as a mineral, a substance must be naturally occurring, inorganic, have a definite crystalline structure and be in this state on Earth.

• liquid

• solid

• gas

• plasma

This is the hardest mineral on Earth

• Talc

• Quartz

• Calcite

• Diamond

Luster, hardness, streak, and crystal form are all __________________ of minerals.

• colors

• shapes

• properties

• chemicals

True or False: Many minerals are mined from the Earth because they are useful to humans.

• true

• false

Tags

NGSS.MS-ESS3-1

Lava is magma that

• forces its way outside of the Earth and hardens on the surface.

• is inside the Earth.

Sedimentary rocks are rocks that are made from

• lava or magma that cools and solidifies

• fragments of preexisting rock that are cemented together

• being exposed to intense heat and pressure inside the Earth

• none of the above

Tags

NGSS.MS-ESS1-4

In igneous rocks, larger crystals form when magma cools

• slowly, inside the Earth

• quickly, at the surface

• instantly, at the surface

When igneous rock forms inside the Earth is is called

• extrusive

• intrusive

• pumice

• obsidian

When rock is broken into smaller pieces it forms

• igneous rocks

• volcanoes

• sediment

• lithofication

Preexisting rocks that are exposed to intense pressure and/or heat and change into new rock types are called

• igneous

• sedimentary

• metamorphic