Wave motion CXC

Wave motion CXC

Wave motion

Waves is defined as the propagation of a disturbance that carries the energy and momentum away from the sources of disturbance.

Objective :-Students should be able to:

• differentiate between types of waves; 

Waves can be classified based on

• topology:- sine wave, square wave, saw tooth wave, etc

• transfer of energy :- progressive (travelling) wave or stationary (standing) wave

• vibration of particles:- Transverse or longitudinal wave

Topology

how the wave looks

Net energy transfer

• Progressive or travelling wave

• standing or stationary wave

Vibration of particles

• transverse wave: Particles move back and forth perpendicular to wave motion- eg water waves., electromagnetic waves.

• longitudinal wave:-Particles move back and forth in direction of wave motion eg sound waves

Transverse waves

Particles move back and forth perpendicular to wave motion- eg water waves., electromagnetic waves.

Longitudinal waves

Particles move back and forth in direction of wave motion eg sound waves.

Multiple Choice

The highest part of a transverse wave is

• the crest

• the trough

• the wave point

• the hotel transylvania

Multiple Choice

The lowest part of a transverse wave are the

• crests

• troughs

• wave points

• low nodules

Multiple Choice

The distance between two corresponding parts of a wave is its

• amplitude

• frequency

• wavelength

• velocity

Multiple Choice

The height of the wave from its resting point is called its

• wavelength

• amplitude

• velocity

• frequency

Multiple Choice

Which wave has the largest wavelength?

• A
• B
• C
• None (same wavelength)

Multiple Choice

Sound waves are which type of waves?

• transverse

• seismic

• longitudinal

• frequency

Multiple Choice

Electromagnetic waves are which type of waves?

• transverse

• seismic

• longitudinal

• frequency

Multiple Choice

crest to crest or trough to trough

• crest

• trough

• amplitude

• wavelength

Multiple Choice

Which wave in the diagram has the greatest wavelength?

• 1

• 2

• 3

• 4

Multiple Choice

What property of this wave is represented by the letter "A"

• amplitude

• crest

• trough

• wavelength

Multiple Choice

What is the wavelength of this wave?

• 3

• 10

• 4

• 8

Multiple Choice

What is the amplitude of this wave?

• 3

• -3

• 6

• 4

Multiple Choice

Longitudinal waves move:

• at a right angle compared to the direction the wave is traveling

• in a circle compared to the direction the wave is traveling

• matter

• in the same direction as the wave is traveling

Multiple Choice

A wave that appears not to move and to stay in one place is called a _____.

• standing wave

• longitudinal wave

• transverse wave

• seismic wave

Multiple Choice

True or False - Waves carry the medium, not energy.

• true

• false

Multiple Choice

A disturbance that transfers energy from one place to another. Only energy , not matter, is transferred.

• wave

• trough

• pitch

• sound

Multiple Choice

What type of wave is this?

• Transverse
• Longitudinal

Multiple Choice

What is represented by the letter 'x'?

• Crest
• Compression
• Rarefaction
• Wavelength

Multiple Choice

What type of wave is this?

• Transverse

• Longitudinal

Multiple Choice

What is the amplitude of the wave?

• 3 cm

• 8 cm

• 16 cm

• 24 cm

Multiple Choice

What does a wave carry from place to place?

• energy

• matter

• people

Multiple Choice

Transverse waves have:

• crests and troughs

• troughs and rarefactions

• compressions and contractions

• rarefactions and crests

Multiple Choice

Longitudinal waves have:

• crests and troughs

• crests and compressions

• compressions and rarefactions

• troughs and rarefactions

Wave motion

Wave Parameters :-the different ways in which we characterize waves

Objective :-Students should be able to:

• apply speed, frequency, wavelength, period and amplitude;

• represent transverse and longitudinal waves in displacement position and displacement-time graphs.

Wave parameter

• Crest

• Trough

• Height

• Wavelength

• Period

• Frequency

• speed

Wave parameter

• Period: -is the time it takes a wave to complete one cycle. We measure the period in seconds, and we symbolize it with the capital letter T.

• frequency:-is the number of cycles that are completed in a certain amount of time. The symbol for frequency is the lowercase f, and we measure it in cycles per second, which is the same as the unit hertz. A wave with a frequency of 20 Hz completes 20 wave cycles every second.

• Amplitude:-the distance between the midline of a wave and its crest or trough

• speed:- refers to how fast the wave is moving

• wavelength: the distance, measured in the direction of propagation of a wave, between two successive points in the wave that are characterized by the same phase of oscillation.

Multiple Choice

Which wave in the diagram has the greatest frequency?

• 1
• 2
• 3
• 4

Multiple Choice

A pendulum makes exactly 40 0scillations in 25s. Determine the Frequency!

• 2,4 hz

• 2,2 Hz

• 1,8 Hz

• 1,6 Hz

Multiple Choice

Examine the picture. What is the period of 1 wavelength?

• 8 seconds

• 1/8 sec

• 1/8 Hz

• 8 Hz

Multiple Choice

The period of a wave is 4 seconds. What is the frequency?

• 1/4 Hz

• 1/4 sec

• 4 Hz

• 2 Hz

Multiple Choice

How often a wave occurs is the wave's

• frequency

• amplitude

• wavelength

• velocity

Multiple Choice

What is the wavelength of the wave?

• 3 cm

• 8 cm

• 16 cm

• 24 cm

Multiple Choice

A wave with a wavelength of 42.0 m and a frequency of 250. Hz will be traveling at _____.

• 10,500 m/s

• 5.95 m/s

• 0.168 m/s

• none of these

Multiple Choice

A wave traveling at 300,000,000 m/s with a frequency of 104,100,000 Hz has a wavelength of _____.

• 2.88 m

• 0.347 m

• 3.12 x 10¹⁶ m

• none of these

Multiple Choice

A wave traveling at 340. m/s with a wavelength of 7.65 m will have a frequency of _____.

• 44.4 Hz

• 0.0225 Hz

• 2,601 Hz

• none of these

Multiple Choice

If a wave is traveling at 260 m/s and has a wavelength of 0.8 m, what is its frequency?

• 208 Hz

• 325 Hz

• 430 Hz

• 160 Hz

Multiple Choice

A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength of the wave?

• 25 m

• 125 m

• 5 m

• 25 m/s

Multiple Choice

A guitar string vibrates with a frequency of 320 hz. If the wavelength of the vibration is 0.23 meters what is the speed of the wave?

• 320.23 m/s

• 1391.3 hz

• 73.6 m/hz

• 73.6 m/s