Sound and Frequency Quiz

What is pitch?

• The number of waves that pass a fixed point in a given amount of time

• The speed of sound waves

• The distance between two sound waves

• The loudness of a sound

What is the frequency of sound waves measured in?

• Kilohertz

• Meters per second

• Decibels

• Hertz

What is the range of frequency that human beings can normally hear?

• 10 Hz to 10,000 Hz

• 20 Hz to 20,000 Hz

• 30 Hz to 30,000 Hz

• 40 Hz to 40,000 Hz

What are sounds with frequencies below 20 hertz called?

• Kilohertz

• Infrasound

• Ultrasound

• Megahertz

What are sounds with frequencies above 20,000 hertz called?

• Kilohertz

• Ultrasound

• Infrasound

• Megahertz

What do bats use ultrasound for?

• To find food during the day

• To communicate with each other

• To navigate in the dark

• To scare away predators

What do bats sense to detect objects in the dark?

• Infrasound waves

• Ultrasound waves

• Radio waves

• Reflected sound waves

What is the frequency range that bats can hear?

• 70,000 Hz to 80,000 Hz

• 60,000 Hz to 70,000 Hz

• 50,000 Hz to 60,000 Hz

• Above 100,000 Hz

What is the number of waves that pass a fixed point in a second called?

• Wave speed

• Wave frequency

• Wave amplitude

• Wave length

What is the unit of measurement for the frequency of sound waves?

• Decibels

• Meters per second

• Kilohertz

• Hertz