Volcanoes Flashcards
1
Q
What types of materials do volcanoes expel
A
Chunks of solid rock gases and liquid lava
2
Q
What is viscosity
A
A measure of the resistance of a fluid flow
3
Q
What is asthenosphere
A
A weaker plastic like Lair upon which earths lithospheric plates move
4
Q
Name two factors that affect viscosity and flow
A
Gas content and chemical composition
5
Q
What is a hotspot
A
Places in the mantle where the temperature is high enough to for magma
6
Q
Name to North American hotspots
A
Yellowstone and Hawaii
