Most Recent Volcano in USA
How a Volcano Forms
Volcanoes and People
Studying Volcanoes
Volcano Vocabulary
100

What was the name of the last volcano to erupt in the US? 

Mount Saint Helens

100

What gets trapped in melted rock inside the Earth?

gas

100

Why do people choose to live near a volcano?

Good for farmimg

100

Scientists look for _____ that a volcano might erupt soon.

clues

100

hot, melted rock that comes from deep inside the Earth

lava

200

What state was the volcano located in?

Washington

200

After volcanoes erupt under the sea and grow, they become ____________. 

Islands

200

Name one plant that grows well in volcanic soil.

rice or pineapple

200

What happens to the volcano's size when it's about to erupt?

It gets bigger.

200

A volcano is _____ when it erupts often

active

300

What was one of the warning signs this volcano was about to explode?

mountaintop grew larger, cracks formed 

300

A volcano is a little like shaking ___________ and then opening it. 

a bottle or can of pop/soda

300

People use the heat from volcanoes to make ________.

electricity

300

What happens to the ground when a volcano is about to erupt?

It shakes or rumbles or forms cracks.

300

asleep, not active

dormant

400

What did the police warn people to do? 

leave the area 

400

What does it mean if a volcano is dormant? 

it hasn't erupted for a very long time

400

In what country do people use volcano heat?

Iceland

400

What might come out of cracks in the ground before a volcano erupts?

steam

400

to burst or be thrown out 

erupt

500

What year did  this volcano explode? 

1980

500

What does lava become when it cools?

hard rock / part of the mountain

500

Pipes pump _______ through the hot rocks underground to make steam.

water

500

What do scientists collect from the ground near active volcanos?

hot rocks or lava 

500

small bits of rock and lava

ash