Download Chapter 11 Checkup/Core Concepts

CIEnCE HORIZONS·
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Date
Score __
Chapter 11 Checkup
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Read each sentence. Write your answer on the line that follows.
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1.
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What is the name for the group of gases that surrounds the earth?
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2.
Name the three layers of the earth.
3.
What is the theory of continental drift?
4.
What causes an earthquake?
5.
Most volcanoes form along what area of a plate?
6.
What kind of mountains are formed when rock layers are squeezed
together?
7.
Molten rock is squeezed up through fissures in the Mid-Ocean
Ridge and then cools. What are two results of this event?
8.
An earthquake occurs that causes no damage, and most people do
not even feel it. Describe what the seismograph recording of this earthquake
would look like.
9.
Two scientists go to an area with a tiltmeter and information about
the number and strength of recent earthquakes. What do you think these
scientists are trying to do?
© Silver,
Burdett & Ginn Inc.
Stop
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~_CIEnCE
Name
HORIZONS
.......
Date
Score __
Chapter 11 Core Concepts
Fill in the circled letter for the one best answer.
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1. Which sentence describes part of Wegener's theory of
continental drift?
(A) All the continents move in the same direction.
(B) All the continents were formed separately.
(C) All the continents were a single supercontinent.
(0) All the continents float in the oceans.
®®©@
2. Studies of which structures led to the theory that the sea floor
spreads apart?
(A) hot spots
(B) faults
(C) trenches
(0) fissures
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3. Which sentence describes part of the theory of plate tectonics?
(A) The plates of the lithosphere move when the mantle shifts.
(B) The earth is made of plates that float on the crust.
(C) The oceans and continents lie on nonmoving plates.
(0) The major plates get larger as molten rock is added
to them.
®®©@
4. An earthquake occurs when there is a sudden
(A) shifting of rocks along a break in the earth's crust.
(B) release of gas from magma.
(C) movement of a plate of the lithosphere over a hot spot.
(0) cooling of the earth's mantle.
®®©@
5. Which sentence about earthquakes is true?
(A) Earthquake damage is greatest in the middle of the
United States.
(B) Scientists can accurately predict where and when an
earthquake will occur.
(C) Earthquake vibrations move as waves through the earth.
(0) Scientists can measure an earthquake by using a tiltmeter.
®®©@
6. Which crust is the youngest?
(A) ocean-floor crust near a continent
(B) ocean-floor crust near the Mid-Ocean Ridge
(C) continental crust near the edge of a continent
(0) continental crust in the middle of a continent
®®©@
7. In which location do the fewest earthquakes occur?
(A) in the middle of a plate
(B) along the Mid-Ocean Ridge
(C) along a fault
(0) near a plate boundary
© Silver,
Burdett & Ginn Inc.
Stop
60
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