Solve these clues to fill the grid.
- Moving air
- 2 Across
- A mixture of gases required for breathing
- 4 Across
- The force used in pushing
- 6 Across
- A swift whirling motion
- 8 Across
- A violent rotating windstorm
- 10 Across
- An aircraft that has a fixed wing and is powered by propellers or jets
- 11 Across
- The act of conducting a controlled test or investigation
- 12 Across
- Study of the natural world through experiments
- 13 Across
- To move downward and lower, but not necessarily all the way
- 14 Across
- A mechanical device that rotates to push against air or water
- 1 Down
- Whether it's rainy, sunny or windy outside
- 2 Down
- The act of giving temporary assistance
- 3 Down
- Two-winged insects characterized by active flight
- 5 Down
- The vast area beyond Earth's atmosphere
- 7 Down
- Force pushing on something
- 9 Down
- Enterprising or ambitious drive
- 11 Down