Progressive Waves

Question 1

An earthquake produces 2 main types of waves:

Answer 1

Primary P-waves or secondary S-waves

Question 2

What type is a progressive wave

Answer 2

A P-wave

Question 3

What type is a S-waves?

Answer 3

A progressive wave

Question 4

Is a P-wave longitudinal or transverse?

Answer 4

Longitudinal

Question 5

Is a S-wave longitudinal or transverse?

Answer 5

Transverse

Question 6

Define a progressive wave.

Answer 6

A progressive wave is an oscillation that travel through matter or sometimes through a vacuum, transferring energy from one place to another, but not matter.

Question 7

Give an example of a progressive wave.

Answer 7

Sound waves

Question 8

When a progressive waves travels through a medium, the particles in the medium

Answer 8

move from their original position to a new position. The particles in the medium extert forces on each other, hence a displaced particle experiences a restoring force from its neighbours and it is pulled back to its original position.

Question 9

A transverse wave is wave which…

Answer 9

oscillations or vibrations are normal to the direction of energy transfer

Question 10

Transverse waves have…

Answer 10

peaks and throughs

Question 11

Examples of transverse waves?

Answer 11

surface water waves, S-waves, EM waves

Question 12

A longitudinal wave is a wave

Answer 12

which oscillations or vibrations are parallel to the direction of energy transfer.

Question 13

Examples of longitudinal waves.

Answer 13

Sound waves and P-waves

Question 14

When longitudinal waves travel through a medium they create,

Answer 14

rarefractions and compressions

Question 15

What is a progressive wave

Answer 15

An oscillation that travels through matter or in some cases a vacuum transferring energy from one place to another but not matter. The particles in the matter vibrate as the wave passes through them, but they do not move along with the wave.

Question 16

There are two types of progressive waves

Answer 16

Transverse and longitudinal

Question 17

Longitudinal have areas of

Answer 17

Rarefaction when particles are more spread out and compression when particles are close together.

Question 18

Define Displacement

Answer 18

The distance from the equilibrium position in a particular direction

Question 19

Amplitude

Answer 19

The maximum displacement from the origin

Question 20

Define Wavelength

Answer 20

The minim distance between e adjacent points on a wave oscillating in phase

Question 21

Define period

Answer 21

The time taken for a full oscillation passing a given point per unit time

Question 22

Define wave speed

Answer 22

The distance travelled by the wave per unit time

Question 23

If particles are in phase they are phase ditemene will be

Answer 23

A multiple of 2pi

Question 24

If particles oscillate out phase with each other then the equation

Answer 24

x/lambda x 2 pi, where x is the separation in wavelengths between the two particles

Question 25

When particles oscillate in anti phase with one another the phase difference is

Answer 25

Lambda/2

Question 26

Techniques to determine frequency

Answer 26

To determine frequency of a wave an oscilloscope is fed a signal usually using a microphone. The time base on the oscilloscope can be set on the x axis to represent time and on y axis to represent the amplitude. The time taken to complete one full oscillation can be measured and then used to find the frequency

Question 27

How are longitudinal waves represented/drawn?

Answer 27

As a transverse wave where the peaks represents compressions and the through represents rarefactions

Question 28

What’s the line of equilibrium

Answer 28

The line at which above and below oscillations occur