Chapter 10 Volcanoes and Igneous Activity

Front

What is the term for the process by which rocks are broken down by natural forces?

Back

Weathering

Front

What is the term for a type of rock that forms when particles from other rocks or the remains of plants and animals are pressed and cemented together?

Back

Sedimentary Rock

Front

Which term describes lava's resistance to flow?

Back

Magma's concentration of dissolved gases

Front

What is the term for the process by which sediment settles out of the water or wind carrying it?

Back

Deposition

Front

What is an earthquake's epicenter?

Back

The place on the surface directly above the focus.

Front

What is the difference between magma and lava?

Back

Magma is molten rock beneath the Earth's surface; lava is magma that has reached the surface.

Front

What is a volcano?

Back

A volcano is an opening in the Earth's crust through which molten rock, ash, and gases are ejected.

Front

What are the three main types of rocks?

Back

Igneous, Sedimentary, and Metamorphic.

Front

What is the process of compaction in sedimentary rock formation?

Back

Compaction is the process where sediments are pressed together under pressure, reducing their volume.

Front

What is the role of dissolved gases in magma?

Back

Dissolved gases increase magma's pressure and influence its viscosity and explosiveness.