Types of Rocks

igneous rock formed from lava that erupted onto Earth's surface

• extrusive

• intrusive

• clastic

• biogenic

igneous rock that formed when magma hardened beneath the surface of Earth

• extrusive

• intrusive

• clastic

• biogenic

constantly broken apart by freezing and thawing, plant roots, acid, and other forces on rock

• weathering

• erosion

• compaction

• cementation

the process by which running water, wind, or ice carry away bits of broken-up rock

• weathering

• erosion

• compaction

• cementation

the process by which sediment settles out of the water or wind carrying it

• deposition

• erosion

• compaction

• cementation

A rock deep within the Earth experiences extreme temperature and pressure. After a long period of time it becomes which rock?

• Magma

• Igneous

• Metamorphic

• Sedimentary

This rock formed when bits of other rocks became pressed into a solid. What type of rock is it?

• Sedimentary Rock

• Metamorphic Rock

• Igneous Rock

This rock was formed by smaller pieces of rock that settled at the bottom of a lake millions of years ago. What type of rock is this?

• Sedimentary

• Igneous

• Metamorphic

This rock was found near the mouth of a volcano. What type of rock is this?

• Sedimentary

• Igneous

• Metamorphic

This rock was formed when molten rock cooled into a solid. What type of rock is it?

• Igneous Rock
• Metamorphic Rock
• Sedimentary Rock