
Seismic Waves and Earth's Interior
Authored by Danielle Jeffrey
Science
9th Grade
Used 4+ times

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25 questions
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1.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Base your answer to the following question on the cross section below, which shows the paths of seismic waves traveling from an earthquake epicenter through the different layers of Earth's interior.
P-waves are absorbed and S-waves are refracted by Earth's outer core
P-waves are refracted and S-waves are absorbed by Earth's outer core
both the P-waves and S-waves are refracted by Earth's outer core
both the P-waves and S-waves are absorbed by Earth's outer core
2.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which two Earth layers are separated by the Moho boundary?
rigid mantle and plastic mantle
outer core and stiffer mantle
stiffer mantle and asthenosphere
crust and rigid mantle
3.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Which part of Earth's interior is inferred to have convection currents that cause tectonic plates to move?
rigid mantle
asthenosphere
outer core
inner core
4.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Compared to the oceanic crust, the oceanic crust is usually
thicker, with a more dense basaltic composition
thicker, with a less dense granitic composition
thinner, with a less dense granitic composition
thinner, with a more dense basaltic composition
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
What is the approximate Pressure at a depth of 3900km within the Earth?
1.0 million atmospheres
2.1 million atmospheres
3.1 million atmospheres
3.4 million atmospheres
6.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Why does the oceanic crust sink beneath the continental crust at a subduction boundary?
The oceanic crust is pulled downward by Earth's magnetic field.
The oceanic crust has a greater density.
The continental crust has a more mafic composition.
The continental crust is pulled upward by the Moon's gravity.
7.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Scientists have inferred the structure of Earth's interior mainly by analyzing
the Moon's interior
the Moon's composition
Earth's surface features
Earth's seismic wave data
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