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Chapter 16 Science
Question | Answer |
---|---|
Sound waves are made up of | chains of vibrating molecules |
sound moves in a | longitudinal wave |
A compression is a | High-pressure area of tightly packed molecules |
A cycle is created by | a combination of a compression and rarefaction |
oscilloscope | Measures sound waves |
A rarefaction is a | Low-pressure area of loosely packed molecules |
The reflection of sound waves off a hard surface can create an | echo |
Soft surfaces.... sound waves | absorb |
amplitude measures | the force of a compression and describes how loud a sound is |
Pitch is determined by sound waves | Frequency |
temperature affects the.... of sound waves | Speed |
Sound waves travel farther through... media, such as water or steel | Dense |
a series of compressions an d rarefactions traveling through a medium | sound wave |
The height of a wave | amplitude |
A measure of how many times an object vibrates per second | frequency |
using echoes to find a location | echolocation |
the unit in which sound Is measured | Decibel |
how high or low a sound is | pitch |
What boats use to locate objects under water | sonar |
How loud or quite a sound is | volume |
A change in pitch of sound when it starts to move towards or away from you | Doppler effect |
A region of empty matter through which sound cannot travel | Vacuum |
A sound wave that bounces off a surface | echo |
The material through which a sound wave travels | Mediums |
Speed of sound waves depend on.. | type of medium/density |