8B-Classifying Volcanoes Flashcards Preview

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Flashcards in 8B-Classifying Volcanoes Deck (12):
1

________ volcanoes are flat, dome shaped with gently sloping sides

Shield

2

The ________ islands are examples of shield volcanoes

Hawaiian

3

Eruptions of bursts of gasses that eject Pyroclastic materials (ash, cinder) are called ______ cones

Cinder

4

Eruptions that eject both lava AND Pyroclastic materials form __________

Stratovolcanoes

5

Stratavolcanoes are also called _________ cones

Composite

6

The United States Geological Survey (USGS) defines what 3 types of volcanic activity?

Active volcano
Dormant volcano
Extinct volcano

7

An _______ volcano is currently erupting or has been observed to erupt in historical times

Active

8

A __________ volcano is inactive but uneroded but may experience some earthquakes, which could mean a future eruption is possible

Dormant

9

An ________ volcano shows no signs of seismic or volcanic activity

Extinct

10

The best indicator of a volcano's destructiveness is its Volcanic ________ Index or VEI for short

Explosivity

11

A volcano's explosivity is measured in __________

Tephras

12

In what 3 ways do scientists classify volcanoes?

By structure, activity, and explosivity