Earthquakes and Volcanoes

Vocabulary 1

100

An underground holding pool for hot magma is called a...

magma chamber

200

Scientists measure earthquake waves with a...

seismograph

300

A vibration of Earth's crust is an...

earthquake

400

A large basin that can form at the top of a volcano is a...

crater

500

Most of the magma from a volcano comes up through a rocky opening called a...

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Vocabulary 2

100

Melted rock that flows out onto Earth's surface is...

Lava

200

If you somehow dug down to Earth's center, the first two layers you would pass through are the...

crust and mantle

300

Hot melted rock that is underground is called...

magma

400

The deepest layer of Earth is the...

core

500

The point of Earth's surface that is directly above an earthquake's focus is the...

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Layers of Earth

100

Name the first layer of Earth. (on Earth's surface)

crust

200

Name the middle layer of Earth.

mantle

300

Name the deepest layer of Earth.

core

400

What is the crust made of?

plates

500

The constant motion of plates lead to.... (name 2 things)

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Volcanoes

100

When a volcano collapses into itself at its top, it forms a...

crater

200

Mountains made of lava layers that alternate with layers of cinders are called...

Composite volcanoes

300

Volcanoes can be useful to peoople because volcanoes...

add minerals to the soil.

400

A moutain that forms from lava is a ...

volcano

500

Name one of two places where a volcano is most likely to form.

where plates move toward each other, in the ocean where plates are moving away from each other.

Misc.

100

Earth's crust and upper mantle are broken into several...

plates

200

The plates of Earth's crust and mantle can NOT usually move... a)toward each other b) away from each other c)very slowly d)Very quickly

very quickly

300

A break in the crust along which rocks move is a...

fault

400

The layer of Earth that is the hottest is the...

inner core

500

The point underground where the movement of the earthquake first takes place is called...

focus