Download Earth Science Chapter 20 Name Worksheet 1 Block Match the

Earth Science
Chapter 20
Worksheet 1
Name ____________________________
Block ____________________________
Match the definitions to the correct word or term
____
1. Topography
A. Slow process of Earth’s crust rising as the result of the
removal of mass from the crust
B. Squeezing force that can cause the intense deformation
associated with mountain building
C. Condition of equilibrium that describes the displacement of
Earth’s mantle by Earth’s continental and oceanic crust
D. A relatively flat-topped area
____
2. Uplifted mountains
____
3. Isostatic rebound
____
4. Fault-block mountains
____
5. Isostasy
____
6. Orogeny
____
7. Root
____
8. Compressive force
E. Cycle of processes that form all mountain ranges, resulting in
broad mountain belts, most associated with plate boundaries
F. Mountains that form when large pieces of crust are tilted,
uplifted, or dropped downward between large normal faults
G. Mountains that form when large regions of Earth are forced
slowly upward without much deformation
H. The change in elevation of the crust
____
9. Plateau
I.
Thickened areas of continental material, detected by
gravitational and seismic studies
Circle the letter that corresponds to the correct word or term
10. What causes differences in elevation on Earth?
a. Density and thickness of the crust
b. Vertical dikes and pillow basalt
c. Seamount and hot spots
d. Uplifted and faulted mountains
11. Which of the following is not associated with orogeny at convergent plate boundaries?
a. Island arcs
b. Highly folded and faulted ranges
c. Ocean ridges
d. Deformed sedimentary rocks
12. What type of mountains is generally made up of undeformed rocks?
a. Fault-block mountains
b. Uplifted mountains
c. Convergent boundary mountains
d. Continental mountains
13. What type of mountains would you expect to find at a convergent boundary involving two oceanic
plates?
a. Fault-block mountains
b. Volcanic mountains
c. Uplifted mountains
d. An ocean ridge
14. What is isostasy?
a. A convergent-boundary mountain
b. A condition of equilibrium
c. A fault-block mountain
d. A difference in crustal densities
15. Adding mass to the crust causes
a. The crust to rebound
b. The mantle to rebound
c. The crust to become depressed
d. The mantle to displace the crust
Circle T if the statement is true or F if the statement is false
T
F
16. About 70% of Earth’s surface is below sea level
T
F
17. The seafloor displaces more of the mantle than the same thickness of the continental crust
T
F
T
F
18. Isostasy between Earth’s mantle and crust exists when the mass of crust is rising as a result
of buoyancy and gravity
19. Mt. Everest is the tallest mountain of Earth, so it probably has the deepest root
T
F
20. When mountains erode, their roots increase in size
T
F
21. The Appalachian Mountains are an example of divergent-boundary mountains
T
F
T
F
T
F
22. The Adirondack Mountains, which are made of rocks that show little deformation, are
uplifted mountains
23. Oceanic crust is composed mainly of basalt, and continental crust is composed mainly of
granite
24. Continents are said to float on Earth’s mantle
T
F
25. Individual volcanic mountains on the ocean floor are called plates
T
F
26. The tallest orogenic belts are found at continental-continental convergent boundaries
T
F
27. Many mountain ranges are formed as the result of tectonic interactions
T
F
T
F
28. Broad, uplifted plateaus, such as the Colorado Plateau, are regional divergent-boundary
features of Earth’s crust
29. The Hawaiian Islands formed as the result of the Pacific Plate’s moving over hot spots in
Earth’s mantle
Answer the following questions
30. Why is the crust thicker beneath continental mountain ranges than it is under flat-lying stretches
of landscapes
31. Describe how mountains form along a continental-continental plate boundary
32. What kinds of rocks are associated with ocean ridges?