Download 3 Vocabulary

CHAPTER
MOUNTAINS AND VOLCANOES
3 Vocabulary
folded mountain
fault-block mountain
volcano
lava
cinders
pyroclastic flow
acid rain
geyser
A. ANSWER AND QUESTION
The answers to each vocabulary word are given below. On the blank, provide the
question for each answer.
Example
1.
A: Mountains that form as an oceanic plate sinks under the edge of a continental plate or as
two continents collide.
Q:
2.
A: Mountains that form as blocks of rock move up or down along normal faults.
Q:
3.
A: An opening in Earth’s crust through which molten rock, rock fragments,
and hot gases erupt.
Q:
4.
A: Molten rock that reaches Earth’s surface.
Q:
5.
A: Volcanic rock fragments that contain holes and tunnels left by escaping gases.
Q:
6.
A: A dense cloud of super-hot gases and rock fragments that races downhill.
Q:
7.
A: Rain that contains high amounts of acid.
Q:
8.
A: A type of hot spring that shoots water into the air.
Q:
CHAPTER 3
Mountains and Volcanoes
Copyright © by McDougal Littell, a division of Houghton Mifflin Company
A: A fracture or break in Earth’s lithosphere along which blocks of rock move past
each other.
Q: What is a fault?
THE CHANGING EARTH, CHAPTER 3, VOCABULARY PRACTICE 177
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B. CROSSWORD PUZZLE
Read the clues below. Then complete the puzzle using the vocabulary words from
this chapter.
3
4
1
1
2
2
3
4
1.
Magma that flows onto the surface.
2.
These form as the lithosphere is stretched and pulled apart by forces
within Earth.
3.
These flows can be as hot as 800°C and can travel faster than 160 kilometers
per hour.
4.
These are larger than ash but smaller than volcanic bombs and blocks.
DOWN
1.
A mountain that is built up from erupted material is called this.
2.
This forms where water collects in an underground chamber then erupts
through a narrow channel.
3.
These form when two continental plates push together.
4.
Volcanoes are sources of this, but a bigger source is human activity.
Copyright © by McDougal Littell, a division of Houghton Mifflin Company
CHAPTER 3
Mountains and Volcanoes
ACROSS
178 THE CHANGING EARTH, CHAPTER 3, VOCABULARY PRACTICE
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