Earth's Structure Unit

Front

What is the process of sedimentary rock formation?

Back

The process begins with the breakdown of exposed rock into smaller pieces. Then, through erosion, these pieces are moved to a new location, which causes deposition. Once settled, the deepest layers experience pressure, which causes the formation of new rock.

Front

What type of rock is formed from fragments or sediments of other rocks?

Back

Sedimentary rock.

Front

How are metamorphic rocks formed?

Back

By heat and pressure as they move toward the core.

Front

What is the soft layer of the mantle on which the lithosphere floats?

Back

Asthenosphere.

Front

What materials make up the Earth's core?

Back

Iron and nickel.

Front

What are the three main types of rocks?

Back

Igneous, sedimentary, and metamorphic.

Front

What is the lithosphere?

Back

The rigid outer layer of the Earth, consisting of the crust and upper mantle.

Front

What is erosion?

Back

The process by which soil and rock are removed from the Earth's surface by natural processes such as wind or water flow.

Front

What is deposition in the context of sedimentary rock formation?

Back

The process where sediments settle out of the transporting medium (like water or wind) and accumulate in layers.

Front

What is the difference between intrusive and extrusive igneous rocks?

Back

Intrusive igneous rocks form from magma that cools slowly beneath the Earth's surface, while extrusive igneous rocks form from lava that cools quickly on the surface.