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Sound BIngo
Question | Answer |
---|---|
The amount of energy in a sound, or the loudness of a sound | amplitude |
How high or low a sound is; | pitch |
Sound is a form of: | energy |
Sound travels in: | waves |
The distance on a wave measured from crest to crest | wavelength |
Sound travels slowest through: | gases |
Sound travels fastest through: | solids |
The pitch of a sound is closely related to: | frequency |
high frequency | high pitch |
low frequency | low pitch |
High amplitude = | loud sound |
soft sound | low amplitude |
A sounds frequency is measured in: | hertz |
The lowest frequency that humans can hear is: | 20 hertz |
The highest frequency that humans can hear is: | 20,000 hertz |
A sounds loudness, or intensity, is measured in: | decibels |
Humans feel pain at ____________ decibels | 120 |
A reflected sound wave creates an: | echo |
A place with NO matter, such as outer space | Vacuum |
Bats and whales use _________________ to locate food that they cannot see | echolocation |
Which travels faster, light or sound? | light |
Furniture and carpets cut down on echoes in a house because soft objects ______________ sound. | absorb |
Which wave has more waves per second, a high frequency or low frequency sound | high frequency |
Name several animals that can hear sounds with very high frequency | bats, dogs, cats, dolphin |
The rapid back and forth movement of something | vibration |
In order for sound to occur, something must: | vibrate |
What is the thin membrane inside your ear that detects vibrations | eardrum |
What do we call sounds greater than 20,000 hertz | ultrasonic |
What do we call sounds less than 20 hertz | infrasonic |
Name an animal that can hear lower frequency sounds than humans | elephant |
A jet traveling MACH 2.0 is traveling ___________ the speed of sound | twice |
What occurs when a jet or rocket breaks the sound barrier | sonic boom |