
Sound and Acoustics
Authored by Jennifer Senglaub
Science
8th Grade

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24 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fill in the blank: _______ is the unit that measures loudness.
Decibels
Hertz
Watts
Lumens
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fill in the blank: _______ is sound with frequencies too low for human hearing.
Subsonic
Ultrasonic
Supersonic
Hypersonic
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Fill in the blank: Sound travels through this medium: _______.
Gas
Liquid
Solid
Vacuum
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The use of underwater sound waves to detect objects is called:
Sonar
Radar
Lidar
Ultrasound
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
High frequency sound waves used in medicine, during pregnancy, are called:
X-rays
Ultrasound
MRI
CT scan
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The study of sound is called:
Acoustics
Optics
Thermodynamics
Kinetics
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The term for the frequency at which every instrument will vibrate is called:
Resonant frequency
Harmonic frequency
Fundamental frequency
Natural frequency
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