Waves and EM Spectrum

Electromagnetic Spectrum

Multiple Choice

Review:

Which of these affect a sound wave's pitch?

• Amplitude

• Frequency

• Volume

• Transverse

Electromagnetic Waves

EM waves are transverse waves. They have the same properties as most other waves, but have some special properties.

- They do not need a medium to travel

- They travel at the speed of light

Multiple Select

Which of these is true for electromagnetic waves?

• They are transverse waves.

• They need air to travel.

• They travel at the speed of light.

• They are longitudinal waves.

• They do not need a medium.

Types of EM Waves

• There are 7 different types of EM waves.

• Each type of EM wave has different frequencies.

The Electromagnetic Spectrum

• The EM spectrum is a list of all of the types of EM waves.

• They are listed in order of frequency.

The 7 Types of EM Waves

• Radio waves

• Microwaves

• Infrared waves

• Visible light

• Ultraviolet (UV) rays

• X-rays

• Gamma rays

Multiple Choice

Which of these EM waves do we normally use to heat up our food?

• Visible light

• X-rays

• Radio waves

• Microwaves

Multiple Choice

Which of these is the EM wave with the highest frequency?

• Gamma rays

• UV rays

• Radio waves

• Visible light

Multiple Choice

Which of these EM waves has the lowest frequency?

• Infrared waves

• Radio waves

• X-rays

• UV rays