Download 01 - Closter Public Schools

Name ______________________________ Class ___________________ Date __________________
Assessment
Chapter Test A
Volcanoes
MULTIPLE CHOICE
Write the letter of the correct answer in the space provided.
_____ 1. A vent or fissure in the Earth’s surface through which magma and
gases are expelled is called a(n)
a. earthquake.
b. magma chamber.
c. volcano.
d. vapor chamber.
_____ 2. Where are volcanoes most likely to form?
a. near the center of continents
b. along bodies of water
c. along plate boundaries
d. in mountainous areas
_____ 3. Which of these would you expect to see during a nonexplosive
eruption?1
a. giant fountains of lava and rock
b. clouds of ash darkening the sky
c. a mountainside caving in
d. huge lava flows
_____ 4. Molten rock deep underground often gathers in a
a. vent.
b. magma chamber.
c. landslide.
d. caldera.
_____ 5. Lava that is very runny probably
a. has a low silica content.
b. is hotter than most lava.
c. has been cooled below the surface.
d. comes from explosive volcanoes.
_____ 6. If the water content of magma is high,
a. a nonexplosive eruption is most likely.
b. probably no eruption will occur.
c. an explosive eruption is more likely.
d. then the temperature at its center is low.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science and Technology
43
Volcanoes
Name ______________________________ Class ___________________ Date __________________
Chapter Test A continued
_____ 7. When you talk about the viscosity of lava, you are talking about
a.the lava’s temperature.
b. how the lava flows.
c. how the lava looks.
d. the lava’s weight.
_____ 8. Which type of lava flows most like dripping wax?
a. aa lava
b. pillow lava
c. blocky lava
d. pahoehoe lava
_____ 9. Cool, stiff lava that forms jumbled heaps of sharp chunks near the vent
is called
a. pahoehoe lava.
c. blocky lava.
b. lapilli.
d. aa lava.
_____ 10. Which type of pyroclastic material gets its name from a word that
means “little stones”?
a. blocky lava
c. pahoehoe lava
b. volcanic bombs
d. lapilli
_____ 11. The pyroclastic material that can reach the upper atmosphere and circle
the Earth for years is
a. pahoehoe lava.
c. lapilli.
b. aa lava.
d. volcanic ash.
_____ 12. Pyroclastic material forms when
a. lava flows calmly from a crack in the Earth’s crust.
b. magma remains underground too long.
c. magma explodes into the air and hardens.
d. lava flows underwater.
_____ 13. Which of these describes a possible climate change caused by a
volcanic eruption?
a. Temperatures rise because of the heat coming from lava.
b. Scorched land creates drought conditions.
c. Ash blocks sunlight, causing temperatures to drop.
d. Volcanic eruptions rarely affect climate.
_____ 14. The three main types of volcanoes are
a. shield, pahoehoe, and vented.
b. cinder, cone, and composite.
c. cinder cone, lapilli, and caldera.
d. shield, composite, and cinder cone.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science and Technology
44
Volcanoes
Name ______________________________ Class ___________________ Date __________________
Chapter Test A Continued
_____ 15. The depression created when the roof of a magma chamber collapses is
called a
a. caldera.
c. lava plateau.
b. crater.
d. lapilli.
_____ 16. Rock begins to melt when
a. both pressure and temperature decrease.
b. both pressure and temperature increase.
c. temperature increases and pressure decreases.
d. temperature decreases and pressure increases.
_____ 17. Most active volcanoes form
a. far from bodies of water.
b. where tectonic plates collide.
c. where tectonic plates separate.
d. where tectonic plates move back and forth.
_____ 18. When an oceanic plate collides with a continental plate, the oceanic
plate is usually subducted because
a. continental plates move more quickly than oceanic plates.
b. oceanic crust is denser and thinner than continental crust.
c. oceanic crust is denser and thicker than continental crust.
d. continental crust is denser and thinner than oceanic crust.
_____ 19. The volcanoes of Hawaii and other places far from tectonic plate
boundaries are known as
a. calderas.
c. hot spots.
b. mid-ocean ridges.
d. viscous volcanoes.
_____ 20. Which category of volcano is most likely to erupt in the near future?
a. a.an active volcano
b. an extinct volcano
c. a dormant volcano
d. a viscous volcano
_____ 21. A tiltmeter is an instrument that measures
a. gas ratios in a volcano.
b. changes in a volcano’s slope.
c. the intensity of earthquakes.
d. the temperature inside a volcano.
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science and Technology
45
Volcanoes
Name ______________________________ Class ___________________ Date __________________
Chapter Test A Continued
MATCHING
Match the correct definition with the correct term. Write the letter in the space
provided. Some terms will not be used.
_____ 22. a small volcano; usually erupts
only for a short time
_____ 23. created by a combination of
explosive and nonexplosive
eruptions
_____ 24. a large, flat area covered by lava
a. crater
b. shield volcano
c. composite volcano
d. cinder cone volcano
e. lava plateau
ab caldera
_____ 25. a funnel-shaped pit
Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor.
Holt Science and Technology
46
Volcanoes