______ are made from one or more minerals.

All rocks go through a cycle that takes several ______ years.

_________ were once liquid, and have hardened beneath or above the surface.

____________ forms when rock is changed by heat, pressure, or both.

__________ are formed when sediment becomes buried.

When rocks break down without moving, it is called ________

As rocks ________, they break into tiny particles called sediment.

Igneous rock that forms above the Earth’s surface is called ________

_________ is made up of tiny bits of mud, shells, sand, small stones, or even pieces of bone.

The Earth’s crust is divided into large ________ that can be pushed together.

As minerals react, a rock’s _______ structure can change.

_________ are the hardest minerals on Earth.

Silver, gold, copper, and aluminum are all common ______.

Minerals can be identified by their _______, color, and hardness.

_________ form in nature when liquids cool and start to harden slowly.

The Earth is made up of _______ layers: the crust, the mantle, and core.

The Earth’s plates move back and forth and push against each other. Eventually, the crust gets pushed together until it forms into ______.

_________ are formed along faults where some large blocks of rocks are forced upwards and others are forced down.

Sometimes, mountains are formed by ________.