1. Warm up 4.2
Quiz on Reading

2. 4. Volcanic Eruptions can effect the climate because:
They heat up the atmosphere B. Dust prevents sun light
C. They change the elevation of land D. All of the above
5. Which is not an extrusive rock?
A. Granite B. rhyolite
C. Basalt D. andesite
The most dangerous type of volcanic eruptions:
Pyroclastic B. Shield C. Lava Flow D. Composite
Lava with more dissolved gases is: A. More Viscous B. Less Viscous
C. More Pyroclastic D. Less Pyroclastic
What determines the viscosity
A. Silica Content B. Dissolved Gases
C. Temperature D. All of the above

3. Answers The most dangerous type of volcanic eruptions:
Pyroclastic B. Shield C. Lava Flow D. Composite
Lava with more dissolved gases is: A. More Viscous B. Less Viscous
D. More Pyroclastic D. Less Pyroclastic
What determines the viscosity
A. Silica Content B. Dissolved Gases
C. Temperature D. All of the above
4. Volcanic Eruptions can effect the climate because:
They heat up the atmosphere B. Dust prevents sun light
C. They change the elevation of land D. All of the above
5. Which is not an extrusive rock?
A. Granite B. rhyolite
C. Basalt D. andesite