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Seismic Waves (22-23)

Total questions: 18

Worksheet time: 14mins

Name
Class
Date
1.

Both P and S waves travel through solids.

a)

True

b)

False

2.

P waves travel faster than S waves

a)

True

b)

False

3.

Only P waves travel through the inner core.

a)

True

b)

False

4.

When S waves leave the Mantle and enter the outer core, they...

a)

speed up

b)

slow down

c)

get absorbed

5.

Which shadow zone is larger?

a)

S wave shadow

b)

P waves shadow

c)

P and S shadow zones are equal in size

6.

Which waves will reach a seismic station first?

a)

P waves

b)

S waves

c)

Both reach at the same time

7.

These waves can travel through the inner core...

a)

P waves only

b)

S waves only

c)

P and S waves

d)

Neither P nor S waves

8.
Look at the picture. What is the location called where all three circles intersect?
a)
focus
b)
earthquake
c)
epicenter
d)
seismograph
9.
The green seismic body waves are...
a)
S Waves because they don't travel through the outer core
b)
P Waves because they don't travel through the outer core
c)
S Waves because they refract as they hit the outer core
d)
P Waves because they refract as they hit the outer core
10.

If an earthquake happened at F/E, which point would not receive P-waves?

a)

G

b)

Y

c)

W

d)

U

11.

If an earthquake happened at F/E, which point(s) would NOT receive P-waves?

a)

G

b)

Y

c)

W

d)

U

12.

An Earthquake happens on the North pole. Will people on the South pole be able to measure s waves?

a)

yes

b)

no

13.

An Earthquake happens on the North pole. Will people on the South pole be able to measure p waves?

a)

yes

b)

no

14.

S waves do not travel through the liquid outer core and reach the side opposite the epicenter of an earthquake due to the fact that they are:

a)

absorbed

b)

refracted

c)

diffracted

15.

The blue lines are _______

a)

p waves

b)

s waves

c)

rayleigh waves

d)

love waves

16.

The green/blue region highlight in this model represents a

a)

P wave shadow zone

b)

S wave shadow zone

c)

Surface wave shadow zone

d)

Convection currents

17.

Which station is located within the S-Wave shadow zone?

a)

A

b)

B

c)

C

d)

D

18.

Why did the S-Wave stop moving at a depth of 2900 km?

a)

Because the medium changed from solid to liquid

b)

Because P-waves cannot travel through liquids

c)

The seismograph station cant read S waves

d)

S waves move faster than a seismograph can detect