Human Hearing range

• 30Hz - 2000Hz

• 20Hz - 2000Hz

• 10 Hz - 50 Hz

• 70 Hz - 10000 Hz

What is used to measure sound

• Gram

• Liters

• Decimals

• Miles

Ultrasound is above

• 1Hz

• 1000Hz

• 400Hz

• 20,000Hz

What is used o measure sound?

• sound level meter (SLM)

• Meter Scale

• integrating sound level meter (ISLM)

• Stopwatch

• noise dosimeter

Sound is a form of

• Water

• Energy

• Paper

• Glass

• Plasma

Speed of sound at sea level, at a temperature of 21 degrees Celsius (70 degrees Fahrenheit), and under typical atmospheric circumstances is

• 544 km/h

• 98765 km/h

• 234567 km/h

• 1238 km/h

What Happens when something goes Faster Than Sound

• slipstream

• sonic boom

• Cyclone

• Sunami

The loudest natural sound on earth is caused

• Car horn

• Erupting Volcano

• Baby Crying

• Bats

• Dog barking

Sound is not heard in

• Gas

• Plasma

• Water

• Vacuum

How is sound produced?

• By the vibration of particles

• By the transfer of particles

• Transfer of heat