Understanding Sound: Waves, Frequency, and Amplitude

What physical representation is used to describe sound?

• Strings

• Waves

• Particles

• Beams

What must happen repeatedly for sound to be generated by a loudspeaker?

• Movement up and down

• Air molecule collisions

• Electrical pulses

• Rotation of components

What is the speed of sound in air?

• 450 meters per second

• 1500 meters per second

• 340 meters per second

• 1000 meters per second

What type of wave is typically used to represent sound diagrammatically?

• Transverse wave

• Longitudinal wave

• Surface wave

• Tidal wave

What does the frequency of a wave tell us?

• The loudness of sound

• The color of sound

• The speed of sound

• The pitch of sound

What range of frequencies can human ears typically hear?

• 50 Hz to 5,000 Hz

• 20 Hz to 20,000 Hz

• 100 Hz to 10,000 Hz

• 3 Hz to 30 Hz

What device is used to visually represent sound waves?

• Microscope

• Telescope

• Oscilloscope

• Periscope

What happens to the wave shape when the frequency increases?

• It becomes narrower

• It becomes wider

• It becomes taller

• It becomes shorter

What does a longer wavelength indicate about the sound's pitch?

• Louder sound

• Lower pitch

• Higher pitch

• Softer sound

What does greater amplitude in a sound wave indicate?

• Louder sound

• Lower pitch

• Softer sound

• Higher pitch