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Sound and light waves

Total questions: 27

Worksheet time: 21mins

Name
Class
Date
1.

The sound that we actually hear is the vibration of molecules.

a)

True

b)

False

2.
If you want to change the pitch of a sound, you have to change the ___
a)
frequency
b)
amplitude
c)
speed
d)
volume
3.
This is what you get when sound waves are reflected, or bounce back, off of a hard surface.
a)
Amplitude
b)
Pitch
c)
Volume
d)
Echo
4.
The number of wavelengths that pass a point each second
a)
frequency
b)
wavelength
c)
pitch
d)
amplitude
5.
The part of a longitudinal wave where the particles of the medium are close together.
a)
rarefaction
b)
compression
c)
crest
d)
trough
6.

What is this part (red line) called?

a)

wavelength

b)

trough

c)

crest

d)

amplitude

7.

What is this part (red line) called?

a)

wavelength

b)

trough

c)

crest

d)

amplitude

8.

What is this part (red line) called?

a)

wavelength

b)

trough

c)

crest

d)

amplitude

9.

What is this part (red line) called?

a)

wavelength

b)

trough

c)

crest

d)

amplitude

10.

What is this part (red line) called?

a)

amplitude

b)

trough

c)

crest

d)

wavelength

11.

Which one has a higher pitch?

a)

Cello

b)

Violin

12.

Which one is louder?

a)

Cello

b)

Violin

c)

They have the same loudness

13.

Which sound wave has low pitch?

a)

a

b)

b

c)

c

d)

d

14.

Which sound wave is loud?

a)

a

b)

b

c)

c

d)

d

15.

Which sound wave is soft?

a)

a

b)

b

c)

c

d)

d

16.

Sound waves travel as ________ waves.

a)

Transverse

b)

Longitudinal

c)

Surface

17.

Sound is made when a source of energy forces the matter around it to __________.

a)

Vibrate

b)

Amplitude

c)

Stay still

d)

Pitch

18.

Sound waves CANNOT travel through which of these:

a)

Paper

b)

Milk

c)

Outer space

19.
The part of a longitudinal wave where the particles of the medium are close together.
a)
rarefaction
b)
compression
c)
crest
d)
trough
20.
The term for how loud or soft a sound is:
a)
pitch
b)
volume
c)
sound
d)
medium
21.
The _______________ determines the color of visible light. 
a)
wavelength
b)
speed
c)
amplitude
d)
light
22.
Which color has the least amount of energy?
a)
red
b)
orange
c)
green
d)
blue
23.

Which of the following would you hear as a low pitched sound? (Reminder- dB is the loudness of the sound)

a)

sound wave with a frequency of 50 Hz

b)

sound wave with frequency of 10,000 Hz

c)

sound wave with an intensity of 10 dB

d)

sound wave with an intensity of 100 dB

24.
The hotter an object the more infrared radiation is given off (T/F).
a)
Frue 
b)
False
25.

Which of the following appliances does NOT use infrared radiation?

a)

A. radio

b)

B. toasters

c)

C. heat lamps

d)

D. TV remote control

26.

Ultraviolet or UV radiation are________ rays

a)

invisible

b)

visible

c)

colourful

27.

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

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