Seismic Waves and Earth's Interior

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sensitive instruments

Although most of these can't be felt great distances from the epicenter, they can be detected and recorded by_______

seismic waves

Most of the knowledge of Earth's interior comes from the study of______ which change speed and directions when they encounter different materials

internal structure

The travel times and behavior of seismic waves provide a detailed picture of Earth's________

paper computer

These tools use the vibrations to record movement on______ and then directly record it onto a_________

bent

This happens because the P-wave is______ when changing between solid and liquid

the region between two distances that doesn't receive direct P waves

What are P-Wave Shadow Zones

the region where no S-Waves can be detected

What are S-Wave shadow zones?

seismographs or seismometers

What are the instruments that are used

P-Wave and S-Wave Shadow zone

What are the two different shadow zones

seismograph

What is the record produced by a seismometer called?

vibrations

______ sent out by earthquakes shake the entire globe

igneous rock

By studying wave times, scientist have found that the lithosphere (crust and upper mantle) is made primarily of_______

solids liquid

Due to the fact that S-waves only travel through______, this Happens. The distance of S waves has allowed scientist to reason that the Earth's outer core must be_______

shadow zones

Due to the fact that the waves change speed and direction,______ are created

dense iron and nickel

Seismic waves traveling through the inner part of the planet indicates it is very_____ and made of______ and________

Seismology

the study of seismic waves and earthquakes


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