Best Ever Q&A
Space
Our World
Nature
History
Science & Technology
Human Body
Senses & Organs
Science of Life
Chemicals & Matter
Atoms & Molecules
Materials
Forces & Energy
Electricity & Magnetism
Heat & Light
Everyday Science
Industry
Transportation
Computers
Machines
Ships
Undersea Exploration
Land Travel
Cars
Flight
Structures
Buildings
Farming
Back Home
Why does the sound of a racing car engine change as it drives past us?
As the racing car approaches, the sound waves in front of it get squashed together. These short sound waves make the engine's noise sound high-pitched. As the car moves past, the sound waves become stretched out behind it. The longer waves make the engine's note sound lower.
Related Image
 
Previous:
Back
Book:
Best Ever Q&A
Section:
Science & Technology
Chapter:
Sound