Sound Quiz Flashcards
Where could two people be a few feet apart and not be able to hear each other screaming?
Space
This is because what is missing? (Space)
A medium
Sound waves travel through the air at what speed in miles per hour
760 mph
A jet flies over going faster than the speed of sound. I will experience what type of sound wave?
Sonic boom
This is caused by the waves being physically? (Sonic boom)
Compressed
If I’m driving towards the airports bright white lights, it will appear what to me?
Blue shifted
If the train is moving away from me its whistle will sound?
Lower pitch
What scientific concept explains the difference in sound and light from the previous two questions?
(Blue shifted and lower pitched)
Doppler effect
The pitch or frequency of a sound is measured using what units
Hertz
The lowest pitch sound humans can hear?
20 Hz
Highest pitch sound humans can hear?
20KHz
Science name when a sound bends around a doorway and you hear someone in the hall talking?
Defraction
Which of the waves above would sound like Alvin and the Chipmunks are singing your favorite song?
A
Which of the waves above would sound like Barry White (Low pitch)
B
Which of the waves above would sound like someone singing softly?
D
Which of the waves above would sound like someone singing loudly?
C
Science name when a spoon in a glass of water looks broken where the air and water meet?
Refraction
To change a songs volume you need to increase or decrease what in a drawn wave?
Amplitude
What is the science name for the spacing of waves behind a duck swimming in water?
Rarefaction
X -> Y -> Z
Where is the plane actually at when you hear it?
(Assuming it starts at X)
Y or Z
X -> Y -> Z
Where does the plane sound like it is when you hear it?
(Assuming it starts at X)
X
What is the scientific word when waves bounce off an object?
Reflection
Name when living organisms use sound waves to locate things around them?
Echolocation
Besides lightning, give one real world example where light moves faster than sound?
Bullet or Fireworks
When waves in front of a fast jet build up, it “adds” the energy which is scientifically called?
Constructive Interference
Name a technology product we can own that reduces the sound waves around us?
Noise cancelling headphones
The previous uses what science concept that “subtracts” energy in a wave?
(Noise cancelling headphones)
Destructive Interfernece
