Across
- 7. device used to measure altitude
- 8. this type of cleaner generates a low-pressure region inside and air rushes in
- 10. a vessel that can float on top of the water or maneuver beneath the surface by changing its buoyancy
- 12. scientists who study the weather
- 14. tendency for a solid object to float when placed in a fluid
Down
- 1. this kind of barometer is toxic and is not portable
- 2. an object in a fluid will________if it is lighter than an equal volume of the fluid and will sink if it is heavier than an equal volume of the fluid
- 3. these are mainly used for advertising and tourism
- 4. device used to measure air pressure
- 5. a simple device used to move liquids over obstacles without pumps
- 6. ________tend to move from areas of higher pressure to areas of lower pressure
- 9. proposed that air has weight
- 11. gravitational pressure within a sea of air is____________pressure
- 13. the_________of the atmosphere with increased elevation limits the height that airships can attain
- 15. this kind of barometer uses an airtight metal box with thin, flexible walls to measure pressure