NEW
Font size
S
M
L
XL
Worksheets8th Grade CBA #2 Review Part 2
Total questions: 34
Worksheet time: 30mins
Name
Class
Date
1.
Ocean ridges, such as Mid-Atlantic ridge, form because--
a)
as the sea floor spreads apart, sediments gather due to ocean currents
b)
the pressure of the water causes magma to rise to the surface
c)
as the sea floor spreads apart, magma pushes to the surface
d)
the tectonic plates are pushed together, forming underwater mountains
2.
The model shows two continental plates. The folded mountains in this model form at which type of plate boundary?
a)
transform boundary
b)
divergent boundary
c)
subduction boundary
d)
convergent boundary
3.
The river represented by the topographic map shown here is flowing in which direction?
a)
from north to south
b)
from south to north
c)
from east to west
d)
from west to east
4.
The thick black lines on the map below show the locations of mid-ocean ridges. Which geologic feature is most likely to form at a mid-ocean ridge?
a)
peninsula
b)
volcano
c)
delta
d)
plateau
5.
The diagram shows an oceanic plate sliding under a continental plate. Based on the diagram, which geologic feature will most likely form as a result of this plate movement?
a)
a mountain on the edge of the continental plate
b)
a large, flat floodplain along the edge of the oceanic plate
c)
a desert on the edge of the continental plate
d)
a delta along the edge of the oceanic plate
6.
The diagram shows a model of the movement of two tectonic plates. When the plates collide, one plate often moves below the other plate. The rising magma that can result from this type of plate movement may produce --
a)
fossil layers
b)
volcanic islands
c)
deep-sea sediment
d)
seafloor spreading
7.
The satellite photograph below shows a large meteorite crater that is 1200 m in diameter and 170 m deep. This crater is located in a flat, arid part of northeastern Arizona. How will this crater most likely change over time?
a)
it will get deeper as it fills with water
b)
it will rise up like a volcanic crater
c)
it will become less deep as the rim erodes
d)
it will widen as it fills with lava
8.
The Himalayan mountains are shown on the map. Four students were asked to identify the geologic process that caused this mountain range to form. Which student correctly identified the geologic process that formed the Himalayan mountains?
a)
student 1: two continental plates converging
b)
student 2: an earthquake in a subduction zone
c)
student 3: a tectonic plate moving over a hot spot
d)
student 4: movement at a transform fault boundary
9.
A section of a topographic map is shown. What is the difference in elevation in meters between point X and point Y on the map?
a)
360 m
b)
340 m
c)
2,840 m
d)
260 m
10.
The satellite image below shows a ship channel between South Padre Island and Boca Chica beach in South Texas. Sand is sometimes removed from the ship channel to make it easier for ships to travel. Sand from the bottom was moved to area beaches. Without this transfer of sand, what would most likely occur in this area in the future?
a)
the ship channel would become deeper, and the island would move west toward the mainland
b)
the ship channel would become shallower, and the beach would become narrower
c)
the ship channel would become narrower, and the island would become completely covered with water
d)
the ship channel would become wider, and the island would sink into the Gulf of Mexico
11.
The points labeled W and Y on the topographic map below show the campsites of two families. Each family hiked to the elevation on the map marked X. The arrows show the paths taken by both families. What was the change in elevation, for the family that took the steepest path to point X?
a)
120 m
b)
140 m
c)
40 m
d)
60 m
12.
Which represents the type of boundary for each diagram?
a)
Q: convergent
R: divergent
S: transform
T: convergent
R: divergent
S: transform
T: convergent
b)
Q: divergent
R: transform
S: convergent
T: convergent
R: transform
S: convergent
T: convergent
c)
Q: divergent
R: convergent
S: convergent
T: transform
R: convergent
S: convergent
T: transform
d)
Q: convergent
R: divergent
S: convergent
T: transform
R: divergent
S: convergent
T: transform
13.
Which represents a land feature or geologic process that occurs at each type of boundary?
a)
Q: mid-ocean ridge
R: volcano
S: folded mountain
T: earthquake
R: volcano
S: folded mountain
T: earthquake
b)
Q: volcano
R: folded mountain
S: mid-ocean ridge
T: earthquake
R: folded mountain
S: mid-ocean ridge
T: earthquake
c)
Q: earthquake
R: mid-ocean ridge
S: volcano
T: folded mountain
R: mid-ocean ridge
S: volcano
T: folded mountain
d)
Q: mid-ocean ridge
R: volcano
S: earthquake
T: folded mountain
R: volcano
S: earthquake
T: folded mountain
14.
Many scientists believe that convection currents in the asthenosphere between South America and Africa caused the separation of the two continents and the formation of the Mid-Atlantic Ridge. Which diagram best represents the convection currents in the plate tectonic theory?
a)
A
b)
B
c)
C
d)
D
15.
Sea breezes blow from the ocean toward the shore because --
a)
the Sun heats up the water more quickly than the land
b)
the Sun heats up the land more quickly than the water
c)
ocean currents cause the wind to blow toward shore
d)
breezes are created as Earth rotates on its axis
16.
The diagram best illustrates how --
a)
weather is a condition of Earth's lower atmosphere
b)
water quickly evaporates when air temperatures are warm
c)
water vapor condenses into water droplets that form clouds
d)
winds are produced by the uneven heating of Earth's surface
17.
Which of the following provides the energy that causes weather?
a)
fossil fuels
b)
hydroelectric
c)
Sun
d)
water
18.
Which of the following best describes the conditions found in the diagram?
a)
hurricane
b)
tornado
c)
tsunami
d)
water spout
19.
Which of the following tools would be used to measure air pressure?
a)
thermometer
b)
spectroscope
c)
barometer
d)
psychrometer
20.
What type of front is represented on this map?
a)
cold front moving North
b)
cold front moving South
c)
warm front moving South
d)
occluded front
21.
When air is heated, its --
a)
density increases, forming an area of high pressure
b)
density increases, forming an area of low pressure
c)
density decreases, forming an area of high pressure
d)
density decreases, forming an area of low pressure
22.
When air moves from an area of high pressure to an area of low pressure, it causes --
a)
an increase in temperature
b)
rain to fall
c)
the wind to blow
d)
a decrease in elevation
23.
Air masses move across Earth's surface because of differences in --
a)
air pressure
b)
rainfall
c)
weather
d)
elevation
24.
A student heard the weather forecaster on television say that an area of high pressure was located over his region of the state. What type of weather is the area most likely to experience?
a)
cold and wet
b)
dry and clear
c)
stormy
d)
cloudy and wet
25.
Why does Earth experience unequal heating?
a)
the atmosphere is not equally distributed around Earth
b)
Earth is tilted on its axis
c)
oceans do not equally cover Earth
d)
Earth's revolution is longer than its rotation
26.
Which of the following is most likely a cause of hurricanes?
a)
cooler ocean temperatures
b)
warmer ocean temperatures
c)
large ocean waves
d)
strong ocean currents
27.
Which of these best explains why the oceans have a greater impact on the weather than areas over the continents?
a)
ocean waves move more easily than continental rock
b)
the oceans contain a wider variety of organisms than the continents
c)
the oceans store and transfer more heat than the continents
d)
ocean water contains more salt than most continental lake water
28.
Which of the following occurs as a result of convection within the ocean?
a)
winds
b)
waves
c)
gravity
d)
ocean currents
29.
What is the driving force for the events pictured?
a)
high pressure and low pressure weather gradients
b)
the Sun heating the air and land creating convection currents
c)
convection currents within the ocean's water
d)
plants releasing oxygen and using carbon dioxide due to photosynthesis
30.
Earth's land areas, oceans, and atmosphere maintain fairly constant average temperatures. What is the best explanation for these constant average temperatures?
a)
Earth's Northern hemisphere and Southern hemisphere have opposite seasons
b)
Earth is tilted and rotates daily on its axis
c)
the continuous motion of air and water distributes the sun's energy
d)
global weather systems generally move from west to east
31.
On weather maps, there are lines with tiny triangles on one side. This represents --
a)
cold air moving in the direction the triangles point
b)
cold air moving opposite the direction the triangles point
c)
warm air moving in the direction the triangles point
d)
warm air moving opposite the direction the triangles point
32.
Hurricanes are powerful tropical storms that develop over warm ocean water. Hurricanes draw their energy from the ocean and weaken as they move over land. Which of the following BEST explains how energy is transferred from the ocean to a hurricane?
a)
evaporating water adds heat to the atmosphere
b)
rising tides change the level of the ocean surface
c)
waves cause turbulence in the lower atmosphere
d)
currents carry warm water along the ocean surface
33.
What is one condition that is necessary for a hurricane to form?
a)
warm ocean water
b)
a strong cold front
c)
cold ocean water
d)
a strong warm front
34.
Hurricanes and similar storm systems begin over oceans. The map below shows average surface temperatures of the oceans in the summer. Based on the map, which area probably produced the most violent storm systems?
a)
area 1
b)
area 2
c)
area 3
d)
area 4
Reset
