Body Waves And Surface Waves

Question 1

It is one way to study the earth

Answer 1

Studying the movement of pressure waves as they travel through the interior of the earth.

Question 2

What are pressure waves?

Answer 2

A wave (such as a sound wave) in which the propagated disturbance came from pressure made in material medium.

Question 3

What is Seismology?

Answer 3

The study of the movement of pressure waves as they travel through the interior of the Earth.

Question 4

What kind of waves does seismologist study?

Answer 4

The waves seismologist study moves through material, these types of waves are called body waves.

And body waves produce surface waves.

Question 5

What causes body waves?

Answer 5

Large explosion, storms, meteorites, and earthquakes.

Question 6

What kind of body waves is the most widely studied by seismologist?

Answer 6

Body waves caused by earthquakes

Question 7

What are the 2 types of body waves created when an earthquake occurs?

Answer 7

The P-waves (Primary Waves) and S-waves (Secondary Waves)

Question 8

Why is the P-Wave named the P-Wave?

Answer 8

Because it is faster than S-Waves, and therefore first to arrive at any point distant from the epicenter of the earth, or the first to be recorded in the seismograph.

Question 9

How can P-waves and S-waves help seismologist?

Answer 9

The differences in the arrival of S and P waves at different locations around the world help seismologist determine the location of the focus and epicenter of the earthquake.

Question 10

What are longitudinal waves?

Answer 10

Waves in which particle move back and forth.

Question 11

Longitudinal waves are also called?

Answer 11

Push waves, because particle pushes energy along in the same orientation as the direction the wave moves.

Question 12

Between P waves and S waves, which one it the Longitudinal wave or Push wave?

Answer 12

P-waves

Question 13

Secondary Waves are also known as?

Answer 13

Shear waves

Question 14

What is a transverse wave?

Answer 14

Particle motion is at right angle to the direction of it’s propagation

Question 15

What is a P (Primary) wave?

Answer 15

The faster one of the 2 body waves and the one that arrives first at the seismometer (the internal part of the seismograph).

P-waves have a push-pull motion, and can move through solid, liquid, and gasses.

Question 16

What is an S (secondary) wave?

Answer 16

It is slower than P-waves, also known as shear wave, and have an up and down motion.

This type of wave does not travel through anything liquid.

Question 17

Who discovered the P-Wave Shadow Zone?

Answer 17

Inge Lehman

Question 18

Who discovered the S-Wave Shadow Zone?

Answer 18

Beno Gutenberg

Question 19

Who is Inge Lehmann?

Answer 19

A Danish scientist who discovered the P-Wave Shadow zone.

In 1886, she discovered that the earth have a solid inner core inside a molten outer core.

Her discovery was based on her reasearch on the behavior of seismic wave after an earthquake.

Question 20

What happens to seismic waves after an earthquake?

Answer 20

When waves move through a material they change directions, meaning they reflect and refract, and they also change velocity when they hit a material that is different density.

Question 21

Where does Body Wave Travel?

Answer 21

The interior of the planet.

Question 22

What happens when the P-Wave hit the outer core?

Answer 22

They are deflected in a such a way that there is no record of P-waves on the other side of the earth.

The area that there is no record of P-waves is called the P-wave Shadow zone.

Question 23

What is the P-Wave Shadow Zone?

Answer 23

It is the area of the earth where there is no history record of P-waves, because when the P-waves hit the outer core, they are deflected.

Question 24

Who is Beno Gutenberg?

Answer 24

A seismologist who discovered the S-Wave Shadow zone.

Question 25

Why is the S-Wave Shadow zone large?

Answer 25

Because the S-Wave that emanate from the focus and travel through the earth are completely absorbed by the outer core, in which, should be liquid because S-Wave cannot pass through liquid.

Question 26

What are surface waves?

Answer 26

They are the waves formed when the body waves reflect and refract of off the surface of the earth.

Question 27

What are the two kinds of Surface Waves?

Answer 27

Love Waves and Rayleigh Wave

Question 28

What are love waves?

Answer 28

It was discovered by Augustus Love, it is the third fastest of the waves and it is a shear motion, but also a side to side motion.

It is the most damaging type of wave.

Question 29

What is a Rayleigh Wave?

Answer 29

It is discovered by John William Strutt, 3rd Baron Rayleigh.

It is the slowest wave, they provide the rolling motion during an earthquake.

It causes most of the shaking during an earthquake.

Question 30

Why is that the nearer you are to an earthquake the more dangerous it is?

Answer 30

Because the nearer you are, the more you will feel the P-waves, S-Waves, love waves, and Rayleigh Waves all together.