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