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Earth Science
Test Description: Mid year review
Instructions: Answer all questions to get your test result.
1) Magma is:
A
the reason volcanoes form
B
all of these
C
melted rock
D
the source of all igneous rocks
2) The asthenosphere is:
A
heated by the presence of magma.
B
completely molten.
C
all of these.
D
the source of most magmas.
3) When a continental plate collides with an oceanic plate, what happens?
A
The plates slide past one another on top of the asthenosphere
B
Both plates buckle, thicken, and push upward
C
Both plates are subducted into the asthenoshere
D
The oceanic plate sinks (subducts)
4) In classifying igneous rocks, which of the following is not important?
A
Texture
B
Mineral composition
C
Crystal size
D
How deep the rock was formed in the earth’s crust
5) Why is the Georgia soil red or reddish in color?
A
It is a poorly drained soil
B
It has a high content of organic material
C
It has a high mineral content of iron
D
It is a new soil
6) Characteristics for identifying minerals would include which attributes?
A
Density, luster, color, cleavage
B
Silicates, fluorites, topaz, quartz
C
Streak, hardness, color, brightness
D
Mining, depth of formation, density, chemistry
7) Obsidian is an igneous rock that
A
solidified in Earth's mantle
B
solidified beneath Earth's surface
C
solidified very rapidly to form glass.
D
solidified very slowly to form pegmatite
8) If we compare the temperature and pressure of the Earth's mantle to the core, what differences can we expect as we move downward into the Earth?
A
Both the temperature and pressure decrease
B
The temperature decreases and the pressure increases.
C
The temperature increases and the pressure decreases.
D
Both the temperature and pressure increase.
9) The point within the Earth where seismic waves originate is:
A
the focus.
B
the origin.
C
the fault scarp
D
the epicenter.
10) The fastest seismic waves are:
A
Love waves
B
all of these affect the rate of the wave
C
P-waves
D
S-waves
*select an answer for all questions
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