
Understanding Sound Intensity and Decibels

Interactive Video
•
Physics
•
9th - 10th Grade
•
Hard
Jennifer Brown
FREE Resource
10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens to the intensity of sound as you move further away from the source?
It remains the same.
It increases.
It fluctuates randomly.
It decreases.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How is sound intensity mathematically related to power and area?
Intensity equals area divided by power.
Intensity equals power times area.
Intensity equals power plus area.
Intensity equals power divided by area.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the threshold of human hearing in terms of intensity?
10 watts per meter squared
10 to the negative 6 watts per meter squared
1 watt per meter squared
10 to the negative 12 watts per meter squared
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does an increase of 10 decibels represent in terms of intensity?
No change in intensity
A hundredfold increase in intensity
A tenfold increase in intensity
A doubling of intensity
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a sound has an intensity level of 0 decibels, what is its intensity in watts per meter squared?
10 to the negative 12
10 to the negative 11
10 to the negative 10
10 to the negative 13
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How much greater is the intensity of a sound at 20 decibels compared to 0 decibels?
50 times greater
100 times greater
10 times greater
20 times greater
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the intensity level in decibels if the intensity is 10 to the negative 10 watts per meter squared?
10 decibels
20 decibels
30 decibels
40 decibels
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