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EM waves 1.2

Total questions: 24

Worksheet time: 47mins

Name
Class
Date
1.

When the wavelength increases the frequency will

a)

increase

b)

decrease

c)

remain same

d)

none of these

2.
EM waves  
a)
Must travel through a vacuum
b)
Can travel through a medium or a vacuum
c)
Are the same type of wave as mechanical waves
d)
Can only travel through a vacuum
3.
EM waves have the same speed but different:
a)
frequency & medium 
b)
wavelength & frequency
c)
medium & wavelength
d)
color & medium
4.
How are EM waves different from Mechanical waves?
a)
EM waves need a medium
b)
Mechanical waves need a medium
c)
EM waves can travel through empty space only
d)
Mechanical waves transfer matter
5.

Which property determines the amount of energy for an ELECTROMAGNETIC wave?

a)

amplitude

b)

frequency

c)

particle size

d)

medium

6.
What is a vacuum? 
a)
A space with only air in it
b)
A space with NO matter at all present
c)
A machine you use to do your chores
7.
When the wavelength increases the frequency will
a)
increase
b)
decrease
8.
All EM waves travel at  
a)
different speeds
b)
the speed of sound
c)
the speed of light
d)
the speed of a vacuum
9.
EM waves travel the speed of light which is..
a)
3000 miles/sec
b)
300,000 km/sec
c)
3000 miles/hour
d)
30 miles per hour
10.
EM waves have the same speed but different:
a)
frequency & medium 
b)
wavelength & frequency
c)
medium & wavelength
d)
color & medium
11.
How are electromagnetic waves different from other waves? 
a)
They have very short wavelengths 
b)
They transmit energy instead of matter 
c)
They can travel through a vacuum 
d)
They can change direction by reflection 
12.
High frequency waves have _________ wavelengths.
a)
varying
b)
long
c)
the same
d)
short
13.
All electromagnetic waves have the same...
a)
frequency
b)
speed
c)
wavelength
d)
energy
14.
Electromagnetic waves________________travel through space.
a)
Never
b)
Cannot
c)
Can
d)
Wish they could
15.

An electromagnetic wave travels at the speed of _______.

a)

sound

b)

light

16.

The energy that electromagnetic waves transfer through matter or space is called electromagnetic ________.

a)

heat

b)

light

c)

rays

d)

radiation

17.

What wave property is represented by the letter "A"?

a)

amplitude

b)

frequency

c)

trough

d)

wavelength

18.

What do electromagnetic waves transfer from one place to another?

a)

sparks

b)

lightning

c)

energy

d)

atoms

19.

If the wave has a high frequency, what will the energy of the wave be?

a)

higher energy

b)

lower energy

20.

Which of the following does not cause electromagnetic waves to form?

a)

when an electric charge is speeding up

b)

when an electric charge is slowing down

c)

when an electric charge is changing its direction

d)

when an electric charge is not moving

21.

What is the correct equation for calculating wave speed?

a)

wave speed = frequency / wavelength

b)

wave speed = frequency x wavelength

c)

frequency = wave speed x wavelength

22.

Electromagnetic waves can travel in a vacuum with a velocity of __________.

a)

1.0 x 108 m/s

b)

1.0 x 105 m/s

c)

3.0 x 108 m/s

d)

3.0 x 105 m/s

23.

How does an electric field and magnetic field oscillate with each other?

a)

Perpendicular with each other.

b)

Parallel with each other.

c)

Align with each other.

d)

Back and forth with each other.

24.

EM waves can be related in this equation, c = fλ . What is c in the equation?

a)

speed of frequency

b)

speed of molecules

c)

speed of light

d)

speed of particles