Vocabulary
Across
- 6. it is there to keep the flame from igniting the ballon
- 7. having been emptied of air or gas.
- 10. a hole that allows hot air to escape
- 11. a measurement that compares the amount of matter an object has to its volume
- 12. The opening at the base of the balloon through which the flames from the burner passes to heat the air inside the balloon
- 14. filling something with air or gas so that it becomes big
- 15. upward force in the balloon
Down
- 1. strength or energy exerted or brought to bear : cause of motion or change : active power
- 2. a section of fabric running from top to bottom of the balloon
- 3. the attraction of the mass of the earth, the moon, or a planet for bodies at or near its surface
- 4. an act of ascending; upward movement; a rising movement
- 5. an upward force that the air exerts on them. The balloon must weigh less than the air it
- 7. is the force of flight that slows objects down
- 8. this is the actual “balloon” and is usually made out of nylon panels or “gores”.
- 9. It is what propels the hot air up into the envelope to make the balloon move upwards into the air
- 13. the passenger goes into this