Electromagnetic Waves

Electromagnetic Spectrum

Light Waves Part 1

Open Ended

What is the value for speed of light in m/s?

​ https://www.edumedia-sciences.com/en/media/222-transverse-electromagnetic-wave

3.00 x 10^{8 m/s}

Multiple Choice

EM waves travel at what speed?

• $$3.0\ x\ 10^{8\ }$$  km/s

• 300,000 m/s

• $$3.0\ x\ 10^8$$  m/s

• 300,000,000 km/s

Multiple Choice

Electromagnetic waves vary in

• the speed they travel in a vacuum

• wavelength and frequency

• the way they reflect

• the orientation of their electric and magnetic fields

Multiple Choice

The full range of frequencies of electromagnetic radiation is called

• visible light

• the electromagnetic spectrum

• radio waves

• invisible radiation

Audio Response

What did the video clip show? You will need to allow permission to use the microphone on your computer to answer this question

Open Audio Recorder

Multiple Choice

Electromagnetic waves are

• transverse waves

• longitudinal waves.

Multiple Choice

Electromagnetic waves

• need a medium to travel through

• can travel through a vacuum

Multiple Choice

Plays important role in wireless communication

• ultraviolet

• visible light

• infrared

• microwave

Multiple Choice

If I point the remote for the projector at the smart board will the projector turn off?

• Yes

• No

Multiple Choice

If I cover the remote with my finger will the projector turn off?

• Yes

• No

Multiple Choice

Infrared rays have a shorter wavelength than

• Ultraviolet ray

• X-rays

• gamma rays

• radio waves

Multiple Choice

Helpful in military night vision goggles

• radio wave

• microwave

• infrared

• light

Multiple Choice

You would expect a 452 nanometer EM wave to be which of the following colors

• Red

• Blue

• Green

• Yellow

Multiple Choice

Select the correct order of waves on the EMS from low to high energy

• Radio wave, Microwave, Infrared, Visible, Ultraviolet, X-ray, Gamma

• Visible, Microwave, Infrared, Ultraviolet, X-ray, Gamma, Radio wave

• Gamma, X-ray, Ultraviolet, Visible, Infrared, Microwave, Radio wave

• Microwave, Radio wave, Visible, Infrared, Ultraviolet, X-ray, Gamma

Multiple Choice

Which of these electromagnetic waves has the shortest wavelength?

• Infrared waves

• Light waves

• Radio waves

• X-rays

• Ultraviolet waves

Multiple Choice

What does a wave carry?

• boats

• energy

• matter

• water

The speed of light - The simulation shows the frequency and wavelength for any electromagnetic wave. you can drag the slider to change wavelength and frequency. 

Questions

1. What does this sim tell you? 

2. Define wavelength.

3. How does changing wavelength in the activity vary the light that you see?

4. How do you think light travels?

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​Em Sim

Multiple Choice

What happens to frequency when the energy increases?

• it increases

• it stays the same

• it decreases