Blowing Its Top:
Understanding Volcanoes
1. Molly put vegetable oil, water, and syrup in a jar. She
covered the jar and shook it. If she let the jar stand
without shaking it for a few days what would it look like?
a. vegetable oil
pancake syrup
water
b. water
pancake syrup
vegetable oil
c. pancake syrup
water
vegetable oil
2. If we wanted to measure the vinegar for an experiment, what tool would a
scientist use?
b. a balance scale
c. thermometer
d. graduated cylinder
3. During a volcanic eruption what causes hot ash to rise high in the sky?
c. rotation of the earth
d. the increase in gas pressure
e. the suns heat
4. Using the word bank and label the four layers of the earth. (mantle, outer core,
crust, inner core)
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AndersonElizabeth
Thursday, January 3, 2013 3:23:29 PM ET
5. What is the melted rock inside the earth called?
e. magma
f. syrup
g. lava
6. What are the three types of volcanoes?
f. Mt. Saint Helens, Mt. Vesuvius, Mt. Krakatoa
g. cinder cone, shield, composite
h. dome, conduit, crater
7. Name a famous volcano. _________________________
8. Which sentence best describes the difference between magma and lava.
h. magma flows quickly, lava flows very slowly
i. magma is molten rock beneath the earth’s surface, lava is molten rock on the
earth’s surface.
j. magma is molten rock, lava is solid rock
9. Volcanoes only exist on land. Circle the correct choice.
TRUE
FALSE
10. What layer of the earth is the most dense?
j. crust
k. inner core
l. mantle
m. outer core
11. Describe the different among an active, dormant, and extinct volcano.
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AndersonElizabeth
Thursday, January 3, 2013 3:23:29 PM ET