Volcanic Eruption

1. What does not come out of volcanoes?

• a. ash      

• b. chocolate

• c. lava

• d. rock

2. Before lava reaches the surface it is called ______.                        

• a. liquid fire     

• b. magma

• c. pyroclastic material

•  d. volcanic ash

3. A weak spot in the crust where molten material, or magma comes to the surface.                   

• a. lava    

• b. lithosphere

• c. magma

•  d. volcano

4. A destructive mass of very hot ash, lava fragments, and gases ejected from a volcano.        

    

• a. ash cloud

• b. hot spots

• c. pyroclastic flow

•    d. ring of fire

5. What are some problems that volcanic eruptions cause?

• a. earthquakes

• b. floods

• c. mudslides

•    d. all of the above 

6. Some benefits of volcanic eruptions include____.

  

• a. fertilized soil

• b. mudslides

• c. new land formation

•    d. all of the above

7. Over time, as a volcano continues to erupt, it will get____.   

• a. bigger

• b. cold

• c. hungry  

•   d. smaller

8. Large projectiles thrown through the air during an eruption are called ___.

• a. hot spot

• b. lava

• c. magma chamber  

•       d. volcanic bombs 

9. Which of the following factors helps determine whether a volcanic eruption will be violent or relatively quiet?

• a. amount of dissolved gases

• b. composition of magma

• c. temperature of magma

•       

  d. all of the above

10. What is/are signs that a volcano may erupt soon?

• a. changes in the slope of the volcano

• b. different amounts of gas being produced

• c. earthquake activity in area

•       

  d. all of the above