Waves Notes

Waves Notes

Multiple Choice

A wave in physics

• a disturbance that carries energy from place to place

• a friendly greeting

• the movement of matter along a distance

Multiple Choice

________ waves need a medium to travel through

• mechanical

• electromagnetic

Multiple Choice

________ waves do NOT need a medium to travel through

• mechanical

• electromagnetic

Multiple Choice

Transverse waves

• move in the same plane as the direction of travel

• are also called longitudinal waves

• move at right angles to the direction of the wave travel

Multiple Select

Compressional waves (click all that apply)

• move in the same plane as the direction of travel

• are also called longitudinal waves

• move at right angles to the direction of the wave travel

Multiple Choice

Transverse waves have

• crests and troughs

• compressions and rarefactions

Multiple Choice

The wavelength is defined as

• the height of the crest

• the distance from crest to crest

• how often the waves pass a certain point

Multiple Choice

The amplitude is defined as

• the height of the crest

• the distance from crest to crest

• how often the waves pass a certain point

Multiple Choice

The frequency is defined as

• the height of the crest

• the distance from crest to crest

• how often the waves pass a certain point

Multiple Choice

The unit of frequency is

• meters

• m/s

• Hz

Open Ended

Calculate the frequency of a water wave that has a wavelength of .5 m and a speed of 4.0 m/s.

Open Ended

The lowest-pitched sounds humans can hear have a frequency of 20.0 Hz. What is the wavelength of these sound waves if their wave speed is 350.0 m/s?

Multiple Choice

What happens when a wave hits a hard surface?

• reflection

• refraction

• diffraction

Multiple Choice

What happens when a wave changes speed?

• reflection

• refraction

• diffraction

Multiple Choice

What happens when waves bend around an object?

• reflection

• refraction

• diffraction

Poll

After today's lesson, I am

• Feeling a wave of happiness

• trying to keep my head above water

• feeling medium