earths-layers
Name:
Date:
1. In which area of Earth’s interior is the pressure
most likely to be 2.5 million atmospheres?
A. asthenosphere B. stiffer mantle
C. inner core D. outer core
2. Which statement best describes Earth’s crust and
mantle?
A. The crust is thicker and less dense than the
mantle
B. The crust is thicker and more dense than the
mantle
C. The crust is thinner and less dense than the
mantle
D. The crust is thinner and more dense than the
mantle
3. What is the direct cause of most earthquakes?
A. gravitational pull on bedrock by the Moon
B. deposition of sediment in lakes and oceans
C. movement of bedrock along a fault line
D. heat exchange between the crust and the
atmosphere
4. Letters A through D shown on the accompanying
map are locations on Earths surface.
Which location is closest to a major zone of
frequent earthquakes and volcanic activities?
A. A B. B C. C D. D
5. Seafloor spreading is occurring at the boundary
between the
A. African plate and Antarctic plate
B. Nazca plate and South American plate
C. China plate and Philippine plate
D. Australian plate and Eurasian plate
6. Which features are commonly formed at the plate
boundaries where continental crust converges with
oceanic crust?
A. large volcanic mountain ranges parallel to the
coast at the center of the continents
B. a deep ocean trench and a continental volcanic
mountain range near the coast
C. an underwater volcanic mountain range and
rift valley on the ocean ridge near the coast
D. long chains of mid-ocean volcanic islands
perpendicular to the coast
page 1
7. How far from an earthquake epicenter is a city
where the difference between the P-wave and
S-wave arrival times is 6 minutes and 20 seconds?
A. 1.7 × 10
3
km B. 9.9 × 10
3
km
C. 3.5 × 10
3
km D. 4.7 × 10
3
km
8. A seismic station recorded the arrival of a P-wave
at 10:00:00 am. The S-wave arrival was recorded
at 10:04:20 am. What is the approximate distance
between the earthquake epicenter and the seismic
station?
A. 1.1 × 10
3
km B. 2.2 × 10
3
km
C. 2.9 × 10
3
km D. 7.2 × 10
3
km
9. Through which materials can P-waves travel?
A. solid rock, only
B. magma and water, only
C. magma, water, and natural gas, only
D. solid rock, magma, water, and natural gas
page 2 earths-layers
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earths-layers 05/01/2014
1.
Answer: D
2.
Answer: C
3.
Answer: C
4.
Answer: A
5.
Answer: A
6.
Answer: B
7.
Answer: D
8.
Answer: C
9.
Answer: D