Earthquakes and Volcanoes. Flashcards
1
Q
Crust
A
The thin outer layer of earth, including dry land and at the ocean floor.
2
Q
Mantle
A
The thick layer of earth beneath the crust.
3
Q
Core
A
The layer of earth extending from earth’s center to the bottom of the mantle. its mostly metallic iron and nickel.
4
Q
Plate Tectonics
A
The theory that earth’s crust is divided into plates that are always moving.
5
Q
Fault
A
A break in earth’s crust where rock on one side moves in relation to rock on the other side.
6
Q
Earthquake
A
A shaking of earth’s surface that can cause land to rise and fall.
7
Q
Epicenter
A
The point on earth’s surface directly above the focus of an earthquake.
8
Q
Volcano
A
A place where hot gases, smoke, and melted rock come out of the ground onto earth’s surface.
