ACROSS

4

Maori word signifying pride, identity.

1

This eruption affected global weather and closed an U.S. airbase.

7

Alaskan volcano; two of the largest eruptions recorded are its 3,700 BP and 1750 eruptions.

2

Hazard composed of hot gas, ash, and other material, flows rapidly down sides of volcano.

10

Opening through which volcano erupts.

3

Depression formed by inward collapse of volcano.

11

Volcanic debris and / or mud flow.

4

1980 eruption devasted 596 square km of forest.

13

Name of robot used to explore Mt. Erebus.

5

Lahar from 1985 eruption killed 20,000+ people.

14

Term for lava, shaped like a half-ball, over a volcano vent.

6

Java volcano active between 1982-1985, ash cloud associated with St. Elmo's Fire.

16

Hot spring which erupt steam or water.

8

Light-weight, super-heated gases that speed down volcano flank.

17

Rock fragment ejected from volcano that is greater than 64 mm diameter.

9

Volcano type characterized by broad, gentle slopes of basalt lava.

12

Name of area around Pacific Ocean containing two-thirds of active volcanoes.

13

Measure of how heavy object is for its size.

15

Molten rock below surface of Earth.