Seismic Waves and Earth's Interior

Seismic Waves and Earth's Interior

9th Grade

25 Qs

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Seismic Waves and Earth's Interior

Seismic Waves and Earth's Interior

Assessment

Quiz

Science

9th Grade

Medium

Created by

Danielle Jeffrey

Used 4+ times

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25 questions

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1.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

Media Image

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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