Home Quiz What Is Seismic Refraction?
Preview (15 questions)
1 Question
30 másodperce
Q.

In the Seismic refraction method, the _______ waves are picked up by Geophone.

Thermometer

Wave buoy

Radiating shock
2 Question
30 másodperce
Q.

Seismic waves travel faster through less dense material.

True

False
3 Question
30 másodperce
Q.

Earth has a layered structure is where seismic waves suddenly change paths when _________.

The density abruptly changes

Travel in straight lines

Refraction abruptly changes
4 Question
30 másodperce
Q.

________ is used to record seismic waves.

Seisnoneter

Seismograph

Seismonomer
5 Question
30 másodperce
Q.

Earth's mantle's density increases with depth which extends almost halfway to the center of the Earth.

True

False
6 Question
30 másodperce
Q.

How are P waves?

Ultrasonic

Electromagnetic

Longitudinal
7 Question
30 másodperce
Q.

Seismic waves are caused by ______.

Volcanoes

Earthquakes

Thunder
8 Question
30 másodperce
Q.

The geophone cannot detect seismic refraction in a blind zone.

True

False
9 Question
30 másodperce
Q.

The cone resistance is approximately equal to ______ times the penetration resistance N.

10

50

90
10 Question
30 másodperce
Q.

The base of the cone is _______ cm in diameter in the Dutch cone test.

6.6

4.6

3.6
11 Question
30 másodperce
Q.

The cone test is very useful in ________ soils.

Cohesion-less

Cohesive

Silty clay
12 Question
30 másodperce
Q.

Are S waves Ultrasonic?

Yes

No
13 Question
30 másodperce
Q.

S waves travel through ________.

Solids

Liquids

Both
14 Question
30 másodperce
Q.

The speed of S waves and P waves cannot be recorded.

True

False
15 Question
30 másodperce
Q.

________ are caused when the earth's plates rub together.

Earthquakes

Traffic

Rain