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True or False
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1
The crust is the thinnest of the three compositional layers of the solid Earth.
A)TRUE
B)FALSE
2
The mantle is the thickest of the three compositional layers of the Earth.
A)TRUE
B)FALSE
3
The asthenosphere lies within the outer core.
A)TRUE
B)FALSE
4
Volcanoes are the source of Earth's heat.
A)TRUE
B)FALSE
5
S-waves pass through the inner core of Earth.
A)TRUE
B)FALSE
6
P-waves cannot pass through the liquid outer core of Earth.
A)TRUE
B)FALSE
7
Seismic waves travel at constant velocities through the Earth.
A)TRUE
B)FALSE
8
The ultra-low velocity zone (ULVZ) corresponds to the D-layer of the mantle.
A)TRUE
B)FALSE
9
Meteorites have provided some insights into the structure of our planet.
A)TRUE
B)FALSE
10
Gravity is constant around our planet.
A)TRUE
B)FALSE
11
Gravity measurements provide insights into Earth's structure.
A)TRUE
B)FALSE
12
Earth's magnetic field has reversed many times during its history.
A)TRUE
B)FALSE
13
The magnetic field is constant around the Earth.
A)TRUE
B)FALSE
14
The outer core is a molten liquid.
A)TRUE
B)FALSE
15
The inner core is solid.
A)TRUE
B)FALSE
16
Much of our knowledge of Earth's structure comes from analyses of seismic waves.
A)TRUE
B)FALSE
17
Seismic waves travel in straight lines as they pass through Earth.
A)TRUE
B)FALSE
18
Seismic waves can be reflected from rock material boundaries within Earth.
A)TRUE
B)FALSE
19
Understanding Earth's interior structure requires some knowledge of geophysics.
A)TRUE
B)FALSE
20
The average density of the Earth is 2.65 gm/cm3
A)TRUE
B)FALSE





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