We are learning to: demonstrate how waves transfer energy.

We are looking for: a disturbance or variation that

transfers energy from one point to another point in a medium.

Transverse waves- wave and medium move in direction that is perpendicular to each other

Longitudinal waves- wave and medium move in same direction

A transverse wave…..

A. B. C. D. E.

0 0 000

A. Vibrates particles perpendicular to the direction of wave

B. Vibrates particles parallel to the direction of the wave

C. Vibrates both parallel and perpendicular to the direction of the wave

D. Vibrates particles in one directionE. Help! I don’t understand.

What type of wave is represented by

picture?

A. B. C. D. E.

0 0 000

A. TransverseB. LongitudinalC. SurfaceD. Seismic E. Help! I don’t

understand.

A wave is a disturbance that transfers

A. B. C. D. E.

0 0 000

A. matter.B. particles.C. energy.D. a medium.E. Help! I don’t

understand.

What do you call the material that a wave travels through?

A. B. C. D. E.

0 0 000

A. PlasmaB. SpaceC. VacuumD. MediumE. Help! I don’t

understand.

What type of wave is

represented by the animation?

A. B. C. D. E.

0 0 000

A. LongitudinalB. TransverseC. SurfaceD. SeismicE. Help! I don’t

understand.

We are learning to: describe the properties of waves.

We are looking for: Wavelength-distance from crest to crest (transverse wave), or from compression to compression (longitudinal wave)Frequency-number of waves that pass a given point each secondAmplitude-distance from rest position to the crest (transverse wave); measures how compressed the particles of the medium are (longitudinal wave); determines the amount of energy of each wave

In the diagram, identify the wave property “A”

A. B. C. D.

0 000

A. FrequencyB. AmplitudeC. WavelengthD. Help! I don’t understand.

Which of the following is true about waves in the diagram?

A. B. C. D.

0 000

A. Wave X has a higher frequency than Wave Y

B. Wave X has a lower frequency than Wave Y

C. Wave X has the same frequency as Wave Y

D. Help! I don’t understand.

Which of the waves in the picture has the greatest

amplitude?

1

2

3

0

0

0

0A. 1

B. 2

C. 3

D. Help! I don’t understand.

Which property measures the amount of energy transferred by a wave?

A. B. C. D.

0 000

A. WavelengthB. FrequencyC. AmplitudeD. Help! I don’t

understand.

12

We are learning to demonstrate how waves transfer energy.

We are looking for how waves interact with an object or other waves.  They either:

Transmit-wave energy passes through an object.

Reflect-wave energy bounces off an object.

Refract – wave changes speed as it passes from one medium to another medium

Diffract – wave spreads out as it passes through an opening or around the edge of a barrier

Absorb-wave energy is taken in by an object they encounter.

Interference-wave energy of multiple waves is combined.

What happens to the energy of a wave when the crest of a transverse wave meets the crest of a second transverse wave?

A. B. C. D.

0 000

A. Energy decreases.B. Energy increases.C. Energy stays the

same.D. I don’t get it! Help!

What is it called when a wave bounces off of a barrier?

14

a. b. c. d.

0% 0%0%0%

a. Refractionb. Reflectionc. Diffractiond. Help! I don’t know.

What happens to waves as they go through an opening or around a

corner of an object?

15

A. B. C. D.

0% 0%0%0%

A. They are refracted.B. They are reflected.C. They are diffracted.D. Help! I don’t know.

As waves go through different mediums, what happens to them?

16

A. B. C. D.

0% 0%0%0%

A. Waves change speed and are reflected.

B. Waves change speed and are refracted.

C. Waves change speed and are diffracted.

D. Help! I don’t know.

We are learning to: demonstrate that vibrations produce longitudinal waves which move away from the original source. We are looking for: an explanation of the following:

• A medium is required (mechanical wave)• A sound is produced (acoustic energy)• A vibration is required to produce sound waves (longitudinal wave)

Energy is required to create a sound wave. Sound energy is also known as . . .

A. B. C. D. E.

0 0 000A. Elastic potential energy

B. Radiant energyC. Acoustic energyD. Thermal energyE. Help! I don’t

understand.

How does sound transfer energy?

A. B. C. D.

0 000A. By vibration of a

medium, producing a transverse wave.

B. By vibration of a medium, producing a longitudinal wave.

C. By vibration of a medium, producing a surface wave.

D. Help! I don’t know.

Sound cannot be heard in which of the following locations?

A. B. C. D. E.

0 0 000

A. In a buildingB. Under waterC. In spaceD. In the forestE. Help! I don’t know.

We are learning to: identify the properties of sound.We are looking for: the identification of the properties of sound.Intensity- how much energy sound hasLoudness- our perception of intensityFrequency- number of vibrations that pass a specific point in a period of timePitch- our perception of frequency (high and low pitch) (i.e. Doppler Effect)

As the frequency of a sound wave decreases. . . .

A. B. C. D.

0 000A. Pitch increases.B. Pitch decreases.C. Pitch stays the

same.D. Help! I don’t know.

An ambulance is coming towards you. What happens to the sound waves?

A. B. C. D. E.

0 0 000A. Frequency decreases and pitch decreases

B. Frequency increases and pitch decreases

C. Frequency decreases and pitch increases

D. Frequency increases and pitch increases

E. Help! I don’t know.

How are loudness and intensity related?

A. B. C. D.

0 000A. The louder the sound

the less the intensityB. The louder the sound

the more the intensityC. There is no relationship

between loudness and intensity

D. Help! I don’t know.

We are learning to: describe electromagnetic waves and give specific examples of several types.

We are looking for: 1. Description:-transverse waves that change between electric and magnetic fields.-waves that do not require a medium -the energy that is transferred by electromagnetic waves (electromagnetic radiation)

2. Examples of EM waves based on wavelengths and frequency:-Radio wave-longest wavelength; lowest frequency-Infrared-Visible light-Ultraviolet-x-ray-gamma rays-shortest wavelength; highest frequency

One characteristic of EM waves is:

A. B. C. D.

0 000A. travels as a longitudinal wave

B. does not require a medium

C. does not travel as a transverse wave

D. I need help!!

Which form of electromagnetic wave has the shortest wavelength and the greatest energy?

A. B. C. D. E.

0 0 000A. Radio waves.B. Visible light waves.C. Ultraviolet wave.D. Gamma rays.E. Help! I don’t

understand.

Which wave on the EM spectrum has the lowest frequency and longest wavelength?

A. B. C. D. E.

0 0 000A. Radio wavesB. X-raysC. Visible lightD. Ultra violetE. Help! I don’t

understand.

What is the only EM wave humans can see?

A. B. C. D. E.

0 0 000A. X-raysB. Ultra Violet raysC. Visible LightD. InfraredE. Help! I don’t

understand.