Download Earth-Science-Test-Week-9

Earth Science Test #2 (50pts)
Name__________________
True or False (2pts each)
Indicate whether the following statements are true or false. Explain why the false statements are
false.
Scientists know about the center of the Earth because they have made a tunnel to the center.
1. ___ Moho is a type of rock found in the inner core of the Earth.
2. ___ Dunes form where the wind is strong and the soil is wet.
3. ___ Wind and water are two of the most powerful agents that constantly change the surface
features of the Earth.
4. ___ Flat land is more likely it is to be affected by mass wasting than steep land.
5. ___ Shoreline erosion increases during storms.
6. ___ Heavier particles travel greater distances than lighter particles when they are moved by
wind or water.
7. ___ Mountain slopes are more susceptible to erosion than a flat plain.
Matching (1pt. each)
1. ___ The central portion of the Earth.
2. ___ The fastest seismic waves, which travel through solids, liquids, and gases.
3. ___ The second fastest seismic waves, which travel only through solids.
4. ___ The layer of the upper mantle composed of low-density rock material that is semi-plastic like
putty.
5. ___ The outermost, rigid layer of the Earth composed of the stiff upper layer of the mantle and the
crust.
6. ___ The boundary between the mantle and the crust.
7. ___ The crust on which the continents rest.
8. ___ The thin, hard outer layer of the Earth.
Answer Box
A. Moho
B. Core
C. P waves
D. Continental crust
E. Lithosphere
F. S waves
G. Asthenosphere
H. Crust
Short Answers (2pts. Each)
1. Explain why the Earth has a magnetic field.
2. Which layer of the Earth has the greatest variety of features? Give three examples of those
features.
3. Describe three processes that are involved in mechanical weathering of the Earth.
Matching (1pt. each)
1. ___ Soil depressions scooped out by the wind.
2. ___ A large mass of moving ice.
3. ___ The removal and transport of material by wind, water, or ice.
4. ___ Unsorted rocks and sediments left behind when a glacier melts.
5. ___ The process in which carbonic acid reacts chemically with other substances.
6. ___ The breaking down of rocks by physical processes.
7. ___ The downhill movement of loose rocks and soil due to gravity.
8. ___ The loose layer of rock and soil.
9. ___ The surface features of a place or region.
10. ___ The breaking down of rocks by chemical processes.
11. ___ The wearing down of rock surface by other rocks or sand particles.
12. ___ A large ridge or mound of till.
Answer Box
A. Chemical weathering
B. Carbonation
C. Glacier
D. Erosion
E. Mechanical weathering
F. Deflation hollows
G. Regolith
H. Abrasion
I. Topography
J. Mass wasting
K. Moraine
L. Till
Essay (5pts. Each)
1. How would you address the following situations?
a. A piece of land near a large lake is for sale, and a group of people want to buy it to build cottages.
The construction of the cottages and driveways would contribute to erosion of the dunes. The people
say that they have a right to build whatever they want to on their own land. Do you agree? Why or
why not?
b. A logging company wants to cut down a large part of a forest from a mountainside. The people
from the village below will earn badly needed money by working for the company, but cutting down
the trees will put the region at risk of mass wasting. You plan to write a letter to the company
expressing your opinion of their plan. What are your main points?