Changing Earth Ch. 1
Review - Good Luck!
1. Earth’s inner core and outer core are
both...
A.
B.
C.
D.
parts of the molten asthenosphere
parts of Earth’s rigid lithosphere
completely solid spheres
made up of hot metals
2. How do Earth’s crust and mantle
differ?
A. The crust is much thinner and less dense than
the mantle.
B. The crust is much thinner and denser than the
mantle.
C. The mantle is much thicker and less dense than
the crust.
D. The mantle is much thinner and denser than
the crust.
3. Tectonic plates make up Earth’s
A.
B.
C.
D.
inner core
outer core
lithosphere
asthenosphere
4. Most tectonic plates are made of
A. continental crust and oceanic crust
B. the crust and very top of the mantle
C. parts of Earth’s lithosphere and
asthenosphere
D. the rigid, upper mantle and part of the
asthenosphere.
5. True or False?
Alfred Wegener used sea-floor spreading, ridge
push and slab pull to develop his hypothesis of
continental drift.
6. True or False?
Pangaea was a supercontinent that existed
about 200 million year ago.
7. True or False
Mid-ocean ridges are sites where old crust sinks
into the asthenosphere.
8. True or False
The fact that ocean crust is older the farther
away it is from an ocean ridge support the
theory of plate tectonics.
9. True or False
The transfer of heat by the movement of matter
is called conduction.
10. True or False
One of the forces that cause tectonic plates to
move is convection currents in the
asthenosphere.
11. True or False
Plate movement can occur when a plate is
pushed away from an ocean trench during a
process called ridge push.
12.
An enormous gap that forms when new crust
cools and moves apart is called a ________ .
13.
A ________ occurs wherever two plates move
toward each other.
14.
A ________ can be used to track some plate
movements because it stays in about the same
place while the tectonic plate above it keeps
moving.
15.
Plates move horizontally past each other along
a _________ .
16.
A spreading center is a __________ on the
ocean floor.
17.
Patterns of _________ recorded in ocean floor rocks provide evidence of plate
movement.
18. Subduction occurs
A. along a transform boundary in the ocean
B. when two oceanic plates pull apart
C. when two continental plates converge
D. when an oceanic plate and another plate
converge
19. What happens during a continentalcontinental collision?
A.
B.
C.
D.
Folded mountain belts form.
One plate sinks below the other plate.
Mountains with volcanic peaks form.
Island arcs form parallel to a trench.
20. Island arcs, like the islands of Japan, form
when two
A.
B.
C.
D.
oceanic plates scrape past each other
continental plates scrape past each other
oceanic plates converge
continental plates converge
21. Crust is neither destroyed nor
formed along
A.
B.
C.
D.
convergent boundaries
transform boundaries
oceanic-oceanic boundaries
oceanic-continental boundaries
Explain what is happening
Answers
1. D, 2. A, 3. C, 4. B, 5. false, 6. true, 7. false, 8.
true, 9. false, 10. true, 11. false, 12. rift valley,
13. convergent boundary, 14. hot spot, 15.
transform boundary, 16. divergent boundary,
17. magnetic reversal, 18. D, 19. A, 20. C, 21. B,
22- a. convergence between the continental and
oceanic plates is causing mountains and
volcanic peaks to form.
Answers continued...
22-b. an oceanic plate and a continental plate
collide
22 - c. Ridge push: material from mid-ocean
ridges pushes the plates apart,
22-d. oceanic - continental subduction
22-e. hot spot