Earth’s Composition
Earthquakes
Mountains
Faults
Volcanoes
100

Deposits that cover the earth

Sediments

100

What is a tectonic earthquake?

Earthquake that result from sudden movement of rock beneath the earth‘s surface

100

What fault occurs when rocks on one side of the fault are shoved over the rocks on the other side

Thrust fault

100

What causes earthquakes?

Sudden movement of rock masses along a fault

100

Where did the peak of Mount Saint Helens go on May 18, 1980?

Superheated gases blasted it upward and outward

200

Core of the Earth

Iron or nickel

200

Landslide, cave collapse, or an underground testing of hydrogen bomb

Tremor or weak earthquake

200

Molten rock is formed beneath an overlying rock layer

Domed mountains

200

The most active earthquake zone

Circum– Pacific belt

200

Name the four parts of a volcano

Vent, magma, magma chamber, and cone

300

Most abundant element in the earth crust?

Oxygen

300

What is the science of seismology?

The study of earthquakes

300

Two plates pushed together, causing the layers to buckle

Folded mountains

300

Which two states experience the fewest earthquakes

North Dakota and Florida

300

What is volcanology?

The study of volcanoes and volcano related phenomena

400

Plates that drift

Plate tectonics

400

elastic rebound theory

Rocks on the side of a fault spring back to the original position

400

When molten rock erupts from a hole in the earths crust

Volcanic mountains

400

What are P waves and S waves

Two kinds of waves at the focus of the earthquake

400

What shape can volcanoes take

Cindercone volcanoes, shield volcano

500

Rock that buckle upward during folding

anticline

500

Hypocenter 

The point at which an earthquake begins

500

List three types of mountains

Volcanic, domed and folded mountains

500

What is the purpose of a seismograph

Record and study the vibrations caused by earthquakes

500

What are composite volcanoes?

Volcanoes that produce both cinders and lava