Earth's Interior

Question 1

A p-wave shadow zone exists because of ______.

Answer 1

refraction of waves at the core

Question 2

Seismic waves _____ when they propagate into higher density material.

Answer 2

speed up and bend up

Question 3

An s-wave shadow zone exists because _______.

Answer 3

s-waves cannot travel through liquid

Question 4

as seismic waves pass from rocks of one composition to another, they ____ and ____.

Answer 4

change velocity, refract

Question 5

Seismic waves tell us about _____ and ______ of the interior of the Earth.

Answer 5

shape : composition

Question 6

Higher density results in ____ velocities

Answer 6

higher

Question 7

lower density results in ______ velocities.

Answer 7

lower

Question 8

seismic refracton is ____

Answer 8

bending of wave rays as their velocity changes

Question 9

waves traveling from high to low density will ____ and ____.

Answer 9

slow down, bend down

Question 10

waves traveling from low to high density will _____ and _____.

Answer 10

speed up, bend up

Question 11

why do seismic waves refract as they travel through the Earth?

Answer 11

density increases as you travel deeper into the Earth.