Earth's Crust Flashcard

Front

What are the two types of crust on Earth?

Back

Oceanic and Continental

Front

What causes rocks to fold?

Back

Stress that bends the rock without breaking it.

Front

Define intrusion in geological terms.

Back

Magma that cools and solidifies underground.

Front

What technology is used to determine the absolute age of some igneous and metamorphic rocks?

Back

Radioactive dating.

Tags

NGSS.HS-PS1-8

Front

What is the term for the top layer of Earth in terms of its chemical composition?

Back

Crust.

Front

What is the primary difference between oceanic and continental crust?

Back

Oceanic crust is thinner and denser than continental crust.

Front

What is the process called when rocks are broken down by weathering?

Back

Erosion.

Front

What is the significance of the Mohorovičić discontinuity?

Back

It marks the boundary between the Earth's crust and the underlying mantle.

Front

How does the composition of oceanic crust differ from that of continental crust?

Back

Oceanic crust is primarily composed of basalt, while continental crust is mainly composed of granite.

Front

What role does plate tectonics play in the formation of the Earth's crust?

Back

Plate tectonics is responsible for the movement of the Earth's crust, leading to the formation of mountains, earthquakes, and volcanic activity.

Tags

NGSS.MS-ESS2-2

NGSS.MS-ESS2-3