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Worksheets8th Grade-unit 3 test
Total questions: 19
Worksheet time: 10mins
Name
Class
Date
1.
In the early 1900's, a hypothesis was introduced that proposed a single large landmass broke into smaller landmasses and formed continents, which drifted in their present locations. What is the name of this hypothesis?
a)
continental shift
b)
Continental drift
c)
plate movements
d)
plate tectonics
2.
Which of the following statements is evidence for the theory of plate tectonics but does NOT suggest that the continents were once connected?
a)
the interlocking of present day coastlines,such as Africa and South America
b)
matching rock layers on separate continents
c)
similar land features on separated, present-day continents
d)
thin layer of sediment covering ocean floor, indicating that it was relatively young
3.
The diagram here shows a type of mountain range that can form at divergent plate boundaries. What type of mountains are shown in the diagram?
a)
island volcanic arc
b)
folded mountains
c)
fault-block mountains
d)
continental volcanic arc
4.
The diagram shows the layers of Earth's interior. Which physical layers contain material from the mantle?
a)
Crust, lithosphere, asthenosphere
b)
crust, asthenosphere, mesophere
c)
mesosphere, inner core, outer core
d)
lithosphere, asthenosphere, mesosphere
5.
What causes an earthquake to happen?
a)
Rocks deform slowly as a result of physical stress
b)
Rocks along a fault move suddenly and release energy
c)
Large amounts of rock suddenly shift downward when large holes from the underground
d)
Energy is transferred to rock layers from convection currents in the oceans and the atmosphere
6.
during the year 2003, the number of earthquakes that occurred was higher than usual. The map shows the locations of some of these earthquakes. Where did the highest concentration of earthquakes occur?
a)
within the ocean basins
b)
within the continental landmasses
c)
along the edges of the Pacific Ocean
d)
along the edges of the Atlantic Ocean
7.
The diagram shows a subduction zone. What type of plate boundary is shown in the image, and what type of landform is likely to occur here?
a)
divergent; trench
b)
divergent, island volcanic arc
c)
convergent, folded mountain
d)
convergent; continental volcanic arc
8.
Which explanation best summarizes the hypothesis that is shown in the figure?
a)
The present continents will gradually move to form a single landmass called Pangaea
b)
The continents were once a large landmass named Pangaea, which broke apart and gradually drifted to the present-day locations of the continents.
c)
The continents were once a large landmass, but the north and south magnetic poles pulled the continents apart toward the poles
d)
The continents were once a large landmass, but the ocean levels rose, and these oceans separate today's continents
9.
The San Andreas Fault causes many earthquakes every year. The graph shows some of the strongest earthquakes recorded. On the left, it indicates the year. On the bottom it shows the magnitude. What was happening during the time between these earthquakes?
a)
Energy built up as stress in the rock due to plate motion
b)
energy stored in the rock decreased due to elastic rebound
c)
the fault closed, so there was very little energy to cause an earthquake
d)
the energy stored in the rock decreases as tectonic plates moved apart
10.
During the year 2003, the number of earthquakes that occurred was higher than usual. The map shows the locations of some of these earthquakes. What is the MOST LIKELY reason that there were no major earthquakes recorded in the interior of the continent of Africa?
a)
there are no faults in Africa
b)
the plate boundary inside Africa is too small to form earthquakes
c)
the landmass of Africa is too great to be affected by earthquakes
d)
the entire continent of Africa is located on a single tectonic plate
11.
How does distance from the epicenter of an earthquake change the earthquake's effect?
a)
the strongest effects are usually felt near the equator
b)
the strongest effects are usually felt farthest from the epicenter
c)
the strongest effects are usually felt in a line extending north and south from the epicenter
d)
the strongest effects are usually felt in a ring surrounding the epicenter with a radius of several miles
12.
A geologist is studying an area after an earthquake. She notices that two streams have changed course. What would most likely explain the movement of the streams?
a)
The streams runs across a fault in a rift zone where two plates are diverging
b)
the steams runs across a hot spot far from any tectonic plate
c)
the stream runs across a transform fault that was offset by the earthquake
d)
the stream runs across a subduction zone where two plates are converging.
13.
The illustration shows how the solar system formed. Which statement best summarizes what the illustration shows?
a)
a solar nebula expanded and large chucks of matter formed the planets
b)
a solar nebula collapsed into a swirling disk of matter where the sun formed and where particles collided and formed planets over time
c)
a star expanded into a swirling disk of matter where the sun formed and where particles collided and formed planets over time
d)
a star expanded into a cloud of matter where particles collided and combined to form the sun and planets
14.
The graph shows how P waves and S waves from an earthquake travel through Earth's interior. How do the data support the conclusion that Earth's interior changes from a solid to liquid around 2900 km below the surface?
a)
the speed of P waves increases sharply at 2900 km
b)
no S waves travel through the material below 2900 km and the speed of P waves decreases rapidly
c)
No S waves travel through the material below 2900 km and the speed of P waves increases rapidly
d)
Both P and S waves increase in speed from Earth's surface to 2900 km
15.
What can cause a chain of volcanic islands to form far from plate boundaries?
a)
subduction
b)
folding
c)
rifting
d)
hot spots
16.
Which of the following statements summarizes how the formation of the solar system was similar to the differentiation of Earth into layers?
a)
In both processes,the densest materials moved to the outside
b)
In both processes,the densest materials formed the center layer
c)
In both processes, the densest materials moved to the center
d)
In both processes,the densest materials were evenly distributed
17.
Imagine you collected the data in the photo to study the age and location of rocks on the sea floor. Based on the chart, if a rock is located about 50 km from the mid-ocean ridge, how old is the rock likely to be?
a)
500,000 years old
b)
1,000,000 years old
c)
2,000,000 years old
d)
4,450,000 years old
18.
Which of the following discoveries is evidence supporting the idea of continental drift?
a)
the discovery that most earthquakes are near plate boundaries
b)
the discovery that rocks age increases as distance from mid-ocean ridges increases
c)
the discovery of sea-floor rock patterns due to magnetic reversals
d)
the discovery of matching plant and animal fossils found on different continents
19.
Which type of stress is most likely to occur at convergent plate boundaries?
a)
faulting
b)
tension
c)
compression
d)
shear stress
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