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KSSM F2 chapter 10

Total questions: 25

Worksheet time: 32mins

Name
Class
Date
1.

Sound is produced by -----

a)

Heat energy

b)

Low temperatures

c)

Vibrations

d)

Friction

2.

Sound needs a medium.

a)

True

b)

False

3.

Sound waves are faster than light.

a)

False

b)

True

4.

The unit for measuring frequency is the ---

a)

Joule

b)

Hertz

c)

Desibel

d)

Newton

5.

The measure of the amount of energy in a wave is ----

a)

Wavelength

b)

Hertz

c)

Frequency

d)

Amplitude

6.

Sound waves travel the fastest through ---

a)

Liquids

b)

Gases

c)

Solids

d)

Vacuum

7.

Sound waves that are beyond the range of human ear are known as ----

a)

Infrasonic waves

b)

Ultrasonic waves

8.

Sonar and echolocation use ----- to detect objects under water.

a)

Refraction

b)

Reflection

9.
Material (matter) through which a wave travels
a)
medium
b)
Doppler Effect
c)
sound
d)
pitch
10.

How high or low a sound is; depends on the frequency

a)

pitch

b)

frequency

c)

sound

d)

medium

11.
An ________ is a reflected sound.
a)
Vibration
b)
Echo
c)
Pitch
d)
Volume
12.
_____________ is the highness or lowness of a sound.
(Hint: Think about our sound song.)
a)
Amplitude
b)
Pitch
c)
Volume
d)
Vibration
13.
__________ is the loudness or softness of a sound. 
(Hint: Think about our sound song.)
a)
Echo
b)
Volume
c)
Pitch
d)
Vibration
14.
______________ is the amount of energy in a sound wave.
a)
Amplitude
b)
Echo
c)
Volume
d)
Vibration
15.
Your ear changes the vibration of sound waves into signals. The signals are then interpreted by your brain.
a)
True
b)
False
16.
Sound waves travel the FASTEST through _____________.
a)
gases
b)
liquids
c)
solids
17.
You stand outside a room that has the doors and windows closed. Why can you still hear sounds made inside the room?
a)
Vibrations are absorbed in the doors and windows
b)
Vibrations are reflected inside the room
c)
Vibrations travel through the door and the window
d)
Vibrations echo in the room
18.
Why is sound able to travel faster through a solid than a gas?
a)
Gas molecules are packed tightly.
b)
Sound does not travel faster through a solid than a gas.
c)
Solid molecules are packed tightly.
d)
Gas molecules move slowly.
19.
Sound cannot travel through which of the following?
a)
empty space
b)
gas
c)
liquid
d)
solid
20.

What is the Doppler Effect

a)

Where the wavelength of a wave is shifted due to the source moving

b)

When a wave is shifted when a body pushes the wave

c)

Where the apparent wavelength of a wave is shifted due to the source moving

21.
The Doppler effect is seen when a wave-making source moves toward an observer. 
a)
True
b)
False
22.
When an ambulance move TOWARD you it sounds ________ pitched. 
a)
high
b)
low
c)
medium
23.

STATE 1 LIMITATION OF HUMAN HEARING

4 lines
24.

STATE 1 WAY TO OVERCOME HUMAN LIMITATION OF HEARING

4 lines
25.
Soft surfaces _______ sound waves. 
a)
Reflect
b)
Absorb

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