Vacuums
Science: KS3, topic 3.2.27
Vacuums
There is no air in a vacuum.
Vacuums
- The word is from the Latin vacuus meaning void.
- There is a famous film tagline 'in space no one can hear you scream'.
Waves in vacuums
- In a vacuum there are no particles or matter.
- Having no particles or matter means sound cannot travel in a vacuum.
Air resistance in a vacuum
- Air resistance is when air molecules push against an object moving through air.
- There is no air in outer space.
- So there is not any air resistance on an object in outer space.
Test yourself on Vacuums
What are two properties of vacuums?
What is air resistance?
The famous film tagline says, 'In space no one can hear you scream.' Which of these best explains why this is scientifically accurate?