Class:
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Chapter 16
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Name:
Date:
Worksheet
16.1
For Science Matters Textbook Volume B, sections:
16.1 What Causes Sound?
16.2 How We Hear Sound
Transfer of Sound Energy
Through Vibrations
Secure Your Basics
Without referring to the textbook, try to answer the following questions.
1.
How is sound carried away from its source?
A
B
C
D
2.
External ear and ear canal
Ear bones and eardrum
Eardrum and ear canal
Ear bones and ear canal
the
the
the
the
pitch of the sound had increased
loudness of the sound had increased
quality of the sound had decreased
speed of sound had decreased
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(
)
(
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Movies usually show spaceships as objects travelling through space with a loud noise, and
explosions in space as occuring with a loud blast. Explain why this is scientifically inaccurate.
© 2013 Marshall Cavendish International (Singapore) Private Limited
(S)LSSWBB_16.indd 77
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In an experiment, some grains of sand were placed on a speaker. The volume of the music
coming from the speaker was increased gradually. The grains of sand on the speaker jumped
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about more vigorously. This means that
A
B
C
D
4.
vibrations transferred from one molecule to the next
molecules moving away from the source at 300 m/s
waves moving out in the spaces between molecules
ropes shaking up and down to form rippling waves
Which parts of the ear vibrate when sound is heard?
A
B
C
D
3.
By
By
By
By
Worksheet 16
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6/13/13 2:44 PM