Sound basics 2023

Front

What is sound?

Back

Sound is a type of wave that travels through a medium (like air, water, or solids) and is perceived by our ears.

Front

What happens to the pitch of a sound when the source moves away from the observer?

Back

The pitch of the sound seems lower when the source moves away from the observer, a phenomenon known as the Doppler Effect.

Front

Which material is a good reflector of sound?

Back

Iron is a good reflector of sound.

Front

What is a disturbance that moves through a medium?

Back

Sound is a disturbance that moves through a medium.

Front

What is the Doppler Effect?

Back

The Doppler Effect is a change in frequency of a wave in relation to an observer moving relative to the wave source.

Front

What type of wave is sound classified as?

Back

Sound is classified as a mechanical wave.

Front

What is the relationship between sound and pressure waves?

Back

Sound is a pressure wave that produces sensations in the ear.

Front

What happens to sound waves when they encounter a soft material like a sponge?

Back

Sound waves are absorbed by soft materials like a sponge, reducing the sound intensity.

Front

What is the speed of sound in air at room temperature?

Back

The speed of sound in air at room temperature (20°C) is approximately 343 meters per second.

Front

How does temperature affect the speed of sound?

Back

The speed of sound increases with an increase in temperature.