22_SpeakerBluetooth

How many Hz can a dog hear up to?

• only up to 20,000 Hz

• only up to 40,000 Hz

• only up to 80,000 Hz

• only up to 60,000 Hz

In a microphone, the diaphragm is like...

• a guitar string
• an ear drum

• a piano key
• a drum cylinder

when patterns are created by sound its called

• cymatics

• auditory patterns
• musical structures
• acoustic designs

When you get old what happens to your ear hair?

• Ear hair begins to lay down.

• Ear hair disappears completely.
• Ear hair tends to grow thicker and longer.
• Ear hair turns gray like head hair.

What is the hearing range for a typical human?

• 10 Hz to 15 kHz
• 30 Hz to 25 kHz
• 20 Hz to 20 kHz
• 5 Hz to 50 kHz

What type of wave is this?

• Sound wave
• Longitudinal wave
• Transverse wave
• Electromagnetic wave

What is the lowest point in the wave?

• Crest
• Trough
• Amplitude
• Wavefront

What is frequency measured in?

• Hertz (Hz)
• Volts (V)
• Watts (W)
• Decibels (dB)

What is the highest point in the wave?

• Trough
• Amplitude
• Wavelength
• Crest

Sound waves with frequencies above the audible range, used in medical imaging and cleaning technologies.

• Infrasound
• Ultrasound
• Radio waves
• Microwaves