Rocks

A rock may contain ____ or more minerals

• 1

• 2

About 20 minerals make up most of the rock's in Earth's _____.

• crust

• core

A light-colored rock that contains feldspar and other minerals is

• crystal

• granite

An example of a rock-forming mineral is

• granite

• quartz

The particles that make up rocks

• grains

• texture

How a rock's surface looks and feels

• grains

• texture

A rock's texture could be smooth or ______.

• shiny

• rough

Rocks are made up of particles called

• pattern

• grains

If you say the surface of a rock feels smooth, you are describing the rock's

• shape

• texture

Intrusive rocks have _____ crystals.

• big

• small