Using Sound Questions

Describe at least three different ways that people use sound.

• Locate underwater objects, Speakers, Treat Medical Ailments

• Sound Systems, Treat Medical Ailments, Diagnose medical problems

• Locate underwater objects, Treat medical Ailments, diagnose medical problems

• We do not have three ways to use Sound

What is Sonar?

• is sound with frequency about 20,000 Hz

• is a system that uses the reflection of underwater sound waves to detect objects

• is the study of sound

• is the process of locating objects by emitting sounds and then interpreting the sound waves that are reflected from those objects.

Sound travels at about 1,500 m/s in seawater. How far will a sonar pulse travel in 46 seconds?

• 33 meters

• 69,000 meters

• 690 meters

• 32 meters

What is sound with Frequency above 20,000 Hz and can not be heard by humans called?

• Ultrasound

• Sonar

• Echolocation

• Acoustics

Acoustics is …..

• the process of located objects by emitting sounds and then interpreting the sounds waves that are reflected from those objects.

• is the study of sound.

• is a system that uses the refection of underwater sound waves to detect objects.

• is sounds with frequency above 20,000 Hz and can not be heard by humans.

Calculate Time: How long will it take for an undersea sonar to travel 3 km?

• 4,500 seconds

• 2 seconds

• 500 seconds

• 20 seconds

____ is the process of locating objects by emitting sounds and then interpreting the sounds waves that are reflected from those objects.

• Acoustics

• Echolocation

• Sonar

• Ultrasound

A ____ is a unit of sound intensity

• Cochlea

• Doppler effect

• Loudness

• decibel

Bats use _____ to locate moths and other prey

• Echolocation

• Acoustics

• Doppler Effect

• Sonar

What would a ship use to identify the bottom of a river?

• Doppler Effect

• Echolocation

• Sonar

• Acoustics