DMS
8-3 Subunit Test
8-1, 8-3.1, 8-3.6, 8-3.7
Directions: Select the best answer for each item.
Use the diagram to answer item #1.
1. (8-3.1) The order of the layers of the Earth from thickest to thinnest is
__________.
a. Crust, Mantle, Outer Core, Inner Core
b. Inner Core, Outer Core, Mantle, Crust
c. Mantle, Outer Core, Inner Core, Crust
d. Outer Core, Inner Core, Crust, Mantle
2. (8-3.1) All of the following layers are made of rock EXCEPT __________.
a. Crust and Inner Core
b. Crust and Outer Core
c. Inner Core and Mantle
d. Inner Core and Outer Core
3. (8-3.1) The Earth’s Magnetic Field is caused by…
a. Convection of the Mantle
b. Movement of the Outer Core
c. Pressure on the Inner Core
d. Plate Tectonics of the Crust
4. (8-3.1) The core of Earth is best described as
a. a hot mass of metal
b. a cold mass of metal
c. less dense than the crust
d. less dense than the mantle
5. (8-3.1) The following characteristics describe which layer of the Earth? Least dense layer,
outermost layer, made of solid rock, basalt, and granite
a. Crust
b. Inner Core
c. Mantle
d. Outer Core
6. (8-3.6) New crust forms under the ocean and is pushed outwards to be recycled at the coast.
This motion is due to __________.
a. Convection Currents
b. Earth’s Rotation
c. Movement in the Core
d. Seismic Activity
7. (8-3.6) Volcanoes can form at all of the following locations EXCEPT __________.
a. Convergent Boundaries
b. Divergent Boundaries
c. Hotspot Fissures
d. Transform Boundaries
Use the diagram to answer items #8 and #9.
8. (8-3.6) Subduction Zones occur because
__________.
a. Continental Crust is less dense
than Oceanic Crust
b. Continental Crust tougher than
the Oceanic Crust
c. Oceanic Crust is blocked by
Mountains on Continents
d. Oceanic Crust melts at the
Continent’s coasts
9. (8-3.6) The oldest crust in the diagram would be located at the point labeled __________.
a. A
b. B
c. C
d. D
Use the information below to answer #10-11
The two figures show rock layers that have been affected by Earth processes. The thin arrows on the
block in Figure 1 show direction of movement. The thicker arrows on both Figures 1 and 2 show the
direction of forces that acted on the original flat layers.
10. (8-3.6) Which plate boundary feature is associated with the
compressive forces shown in Figure 2?
a. continental rift valley where one plate is splitting apart
b. midocean ridge where two plates are moving away from each
other
c. high folded mountains where two plates are pushing toward
each other
d. strike-slip faulting where two plates are sliding sideways past
each other
11. (8-3.7/8) The fault seen in Figure 1 is classified as a…
a. Lateral Fault
b. Normal Fault
c. Reverse Fault
d. Strike-Slip Fault
12. (8-3.6) In some areas of the world, like California and Japan, earthquakes are a common
occurrence. How can this best be explained?
a. Both areas are located near the edge of the Pacific Ocean; the unstable sand causes
earthquakes.
b. Both areas are on the boundary of active plate margins, the motion of the plates causes
earthquakes.
c. Both areas are subjected to strong ocean wind and waves that causes earthquakes.
d. The strong ocean currents are undermining both areas causing earthquakes.
13. (8-3.7) Hawaii is a volcano found in the middle of the Pacific Plate. This volcano is unusual
because it is a…
a. boundary
b. cinder cone
c. hotspot
d. ridge
14. (8-3.6) The major difference between a ridge and a rift is…
a. Ridges are faults
b. Ridges are transform boundaries
c. Rifts are convergent boundaries
d. Rifts are on the land
15. (8-1.1) A student sets up an investigation with two identical
plants. He uses containers and soil that are the same. On day
1, he adds fertilizer to plant B. Each plant gets 10 mL of water
every day. The student provides the pictures of the plants that
he took on day 1 and day 10. Which question does his
investigation answer?
a. How does water affect plant growth?
b. How do soil types affect plant growth?
c. How does fertilizer affect plant growth?
d. How fast do different types of plants grow?
16. (8-1.1) Students want to learn which of two soils holds more
water. They put clay in one bottle and sand in the other.
Then they put equal amounts of water in the bottles. Some
of the water drained into beakers. Which of these is the
independent variable?
a. Type of soil
b. Type of beaker
c. Amount of water
d. Number of bottles
17. (8-1.2) A student is investigating which type of soil is best for growing tomato plants from seeds.
The student plants four tomato seeds in each of three different containers of soil. Which step of
the procedure would help the student get the most reliable results?
a. Place one container in a dark room.
b. Use different types of tomato seeds.
c. Change only the soil type in each container.
d. Water each container with a different amount of water.
18. (8-1.6) The standard metric unit of volume used in a science lab is…
a. Celsius
b. Gram
c. Liter
d. Meter
Use the key to answer #19.
19. (8-1.3) What is the name
of this plant?
a. Honey Locust
b. Silver Maple
c. White Oak
d. White Pine
The drawing below shows part of a graduated cylinder containing liquid.
20. (8-1.6) Based on the sensitivity of the graduated cylinder, what is
the volume of the liquid?
a. 70.5 mL
b. 73.0 mL
c. 76.7 mL
d. 87.0 mL
21. (8-1.6) Which of the following instruments is best to use to measure the mass of a small
irregularly shaped solid?
22. (8-1.3) A student counted the number of Canada
geese that have lived on a pond for the past five
years. Based on the graph, how many geese will
probably live on the pond in year 6?
a. 60
b. 65
c. 70
d. 75
23. (8-1.7) Which lab safety scenario is correct?
a. Andrew heated the test tube towards himself in order to better observe the reaction.
b. Kadie was aware of the lab procedures that day so she began the lab before the rest of
the class to be sure she would finish.
c. Rodney wafted the fumes produced during the reaction toward his nose.
d. Suzanne did not use all of the sulfuric acid she poured out for the experiment, so she
returned the remainder to the stock bottle.
24. (8-3.6/3.7) Compare and Contrast Divergent and Convergent Boundaries. Be sure to include how
they Move and at least one Feature seen at each boundary.