Show:
Mechanical & Electromagnetic Waves
Transverse & Longitudinal Waves
Wave Parts
EM Spectrum & Energy
Real-World Applications
100

What type of wave needs a medium to travel?

Mechanical waves

100

What type of wave has particles moving up and down?

Transverse waves

100

What do you call the highest point of a wave?

Crest

100

Which EM wave has the lowest energy?

Radio waves

100
What EM waves are used for radio and TV signals?

Radio waves

200

What type of wave can travel through empty space?

Electromagnetic waves

200
What type of wave has particles moving back and forth?

Longitudinal waves

200

What do you call the lowest point of a wave?

Trough

200

Which EM wave has the highest energy?

Gamma rays

200
What EM waves are used to take pictures of bones?

X-rays

300

Why can't sound travel through empty space?

There is no medium (no air/particles) in space.

300

Which type of wave has crests and troughs?

Transverse waves

300

What do you call the crowded parts of a longitudinal wave?

Compressions

300

What happens to energy when frequency increases?

Energy increases

300

List the EM waves in order from safest to most dangerous for humans.

Radio Waves, Microwaves, Infrared, Visible Light, Ultraviolet, X-rays, and Gamma Rays

400

Give one example of a mechanical wave and one example of an electromagnetic wave.

(See teacher)

400

Sound waves are an example of which type of wave, and why?

Longitudinal waves; particles move parallel, they have compressions and rarefactions

400
What is the amplitude of a wave? 

The maximum height (or energy) of a wave from its resting position

400

Why do gamma rays have more energy than radio waves?

They have a higher frequency and shorter wavelength.

400
Which two EM waves are used in communication? Why are these waves used?

Radio waves and microwaves are used because their long wavelengths make them safe for humans and allow them to travel long distances. 

500

Explain one key similarity and one key difference between mechanical and electromagnetic waves.

Similarity: both transfer energy; Difference: EM wave don't need a medium to travel.

500

Explain how particle motion is different in transverse and longitudinal waves. 

Transverse: particles move perpendicular; Longitudinal: particles move parallel

500

Describe how wavelength and frequency are related in a moving wave.

Shorter wavelength = higher frequency (and vice versa)
500

What happens to wavelength and energy when frequency increases? Explain. 

As frequency increases, energy increases and wavelength decreases.

500

Describe a device that uses EM waves, name the type of wave it uses, and explain how wave particles make it useful.

(See teacher)