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Electromagnetic Waves Practice

Total questions: 31

Worksheet time: 33mins

Name
Class
Date
1.

Electromagnetic waves vary in

a)

the speed they travel in a vacuum

b)

wavelength and frequency

c)

the way they reflect

d)

the orientation of their electric and magnetic fields

2.

The full range of frequencies of electromagnetic radiation is called

a)

visible light

b)

the electromagnetic spectrum

c)

radio waves

d)

invisible radiation

3.

What part of the wave is shown at letter A?

a)

crest

b)

wavelength

c)

trough

d)

frequency

4.

Which part of the wave is shown at letter B?

a)

crest

b)

wavelength resting point

c)

trough

5.

What does a wave carry?

a)

boats

b)

energy

c)

matter

d)

water

6.

Which wave has a greater frequency?

a)

wave B

b)

wave C

7.

Which section of the spectrum is the ONLY one we can see?

a)

X-rays

b)

Gamma Rays

c)

Visible Light

d)

Ultraviolet Rays

8.
Which electromagnetic waves help doctors detect broken bones inside your body?
a)
gamma rays
b)
x-rays
c)
ultraviolet rays
9.
Which electromagnetic waves allow us to diagnose & treat cancer?
a)
Gamma rays
b)
X-rays
c)
Ultraviolet rays
10.
For waves in any medium, as the wavelength decreases, what happens to the frequency?
a)
It also decrease
b)
It stays the same
c)
It increases
11.
Which electromagnetic waves are used in ovens and cell phone communications?
a)
Infrared rays
b)
ultraviolet rays
c)
microwaves
12.
Which electromagnetic waves have the highest frequencies and the shortest wavelengths?
a)
microwaves
b)
visible light
c)
gamma rays
13.
The higher the frequency the ______ the energy. 
a)
higher
b)
lower
c)
neither, stays the same
14.
If the distance represented by the letter A were increased, how would it change the way the sound was heard?
a)
The sound would be higher. 
b)
The sound would be lower. 
c)
The sound would be softer. 
d)
The sound would be louder. 
15.
Sound is produced by
a)
music
b)
vibrations of molecules
c)
Electromagnetic Waves 
d)
Transverse Waves 
16.

Between waves B and D, which is louder?

a)

Wave B

b)

Wave D

17.
What does pitch depend on?
a)
amplitude 
b)
frequency
c)
intensity 
d)
volume of sound
18.

Between waves F and G, which is lower in pitch?

a)

Wave F

b)

Wave G

19.
When comparing the two waves that are shown, how would Wave A (green wave) differ than Wave B (black wave)?
a)
Wave A and B have the same amplitude, but wave B (black) has a lower pitch.
b)
Wave A and B have the same amplitude, but Wave A has a lower pitch. 
c)
Wave A and B have the same pitch, but Wave A is a softer sound. 
d)
Wave A and B have the same pitch, but Wave B is a softer sound. 
20.

What does sound waves travel the fastest through?

a)

Liquids

b)

Gases

c)

Solids

21.

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

a)

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

b)

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

c)

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

d)

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

22.

What is the speed of light?

a)

3.0x108 ms

b)

3.0x108 m/s

c)

6.626x10-34 Js

d)

6.626x10-34 J/s

23.

A blue light has a wavelength of 4x10^-7 m. What is its frequency, to one decimal place?

(a)  

24.

When an electric stove glows red, it is producing near-IR light, of wavelength about 7.9x10^-7 m. What is its frequency to 3 decimal places?

(a)  

25.

A blacklight that makes neon things glow in the dark has a wavelength of about 3.15x10^-7 m. What is its frequency? (2 decimal places please!)

(a)  

26.

A radio station that Mrs. Gladstone likes is 97.5 WWWV out of Charlottesville. The station number means that the frequency of the radio wave is 97.5 Megahertz, or 9.75x10^5 Hz. What is the wavelength? (Use the Hz value and report it to 2 decimal places please!)

(a)  

27.
The relationship between wavelength and frequency is λ=c/f.  Calculate the wavelength of light that has a frequency of 5.2 x 1012 1/s. The speed of of light is 3.0x 108 m/s.
a)
5.8 x 10 -5 m
b)
5.8 x 10 -7 m
c)
5.19 x 10 14 m
d)
1.56 x 10 23 m
28.
Solve this problems using the equation: 
C = λν
If an AM radio station broadcasts at
9.95 x 105 Hz, what is the wavelength of this radiation?
a)
6.59 x 10-28 m
b)
1.01 x 10-6 m
c)
3.32 x 10-3 m
d)
302 m
29.

Calculate the wavelength of light that has a frequency of 5.2 x 1012 1/s.

a)

5.8 x 10 -5 m

b)

5.8 x 10 -7 m

c)

5.19 x 10 14 m

d)

1.56 x 10 23 m

30.
What are the units of frequency?
a)
m/s
b)
s
c)
Hz
d)
m
31.

IRAS, the Infrared Astronomy Satellite launched by NASA in 1983, had a detector that measured infrared or heat radiation from different regions of space. What is the frequency of infrared light that has a wavelength of

1.10 X 10-6 m?

a)

3.67 x 10-15 Hz

b)

3.67 x 10-3 Hz

c)

2.73 x 102 Hz

d)

2.73 x 1014 Hz

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