Doppler Effect

Front

What is the Doppler Effect?

Back

A change in frequency due to the relative motion of a wave source and an observer.

Front

What happens to sound waves as the source moves closer to an observer?

Back

The sound waves compress, leading to a higher frequency (higher pitch).

Front

What happens to sound waves as the source moves away from an observer?

Back

The sound waves stretch, leading to a lower frequency (lower pitch).

Front

What side of the electromagnetic spectrum is most harmful?

Back

The left side is harmful.

Front

What side of the electromagnetic spectrum is harmless?

Back

The right side is harmless.

Front

Long sound waves are associated with which type of pitch?

Back

Low pitched.

Front

Who hears a jet's engines making a lower pitched noise as it approaches?

Back

The pilot.

Front

If a star's light shifts towards the blue side of the spectrum, what does it indicate?

Back

The star is moving towards the Earth.

Front

What is the relationship between wave frequency and pitch?

Back

Higher frequency waves produce higher pitches, while lower frequency waves produce lower pitches.

Front

What is an example of the Doppler Effect in everyday life?

Back

The changing pitch of a siren as an ambulance passes by.