Science: Matter and Energy - Flashcard 14

Front

Jackson is working on a project that involves detecting objects underwater. He uses a system that emits sound waves and analyzes the echoes reflected from submerged objects. This system is called ____.

Back

Sonar

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NGSS.HS-PS4-5

Front

Change in a wave's frequency caused by an object's motion.

Back

Doppler effect

Tags

NGSS.HS-PS4-1

Front

During a science class, Isla measured the sound intensity level of a speaker. The unit usually used to measure sound intensity level is the ____.

Back

Decibel

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NGSS.HS-PS4-1

NGSS.HS-PS4-5

Front

The study of sound is called ____.

Back

Acoustics

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NGSS.HS-PS4-5

Front

Method of calculating distance by sending a sound wave and measuring the echo return time.

Back

Echo ranging

Front

While watching a jet fly overhead, Scarlett heard a loud noise caused by a shock wave. This noise is a ____.

Back

Sonic boom

Tags

NGSS.HS-PS4-1

Front

As the music gets louder, the effect on Abigail's ears is ____.

Back

Loudness

Front

Changing the frequency of guitar strings affects the ____ of the sound.

Back

Pitch

Tags

NGSS.HS-PS4-1

Front

Sound with too low a frequency to be heard is called ____.

Back

Infrasonic

Tags

NGSS.HS-PS4-1

Front

Main factor affecting the speed of sound in air on a hot day vs. a cold day.

Back

Air temperature

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NGSS.HS-PS4-1

NGSS.HS-PS4-5