Across
- 4. Both _____ and gases are considered fluids because their molecules move around more freely than solids.
- 7. This works in opposition to lift. If it is greater than lift, a plane will descend.
- 10. The upward force exerted on objects in a fluid.
- 11. The buoyant force acting on an object in a fluid is equal to the weight of the fluid that it displaces.
- 13. The force that pushes the aircraft up.
- 15. Both liquids and ________ are considered fluids because their molecules move around more freely than solids.
- 18. The third way to increase pressure is to _____ the fluid in a cylinder.
- 19. Compressing a solid changes the _______ of the solid.
- 21. When a liquid is _________ the effects are transmitted to all parts of the liquid.
- 23. The second way to increase pressure is to increase the _____ of the molecules.
- 24. According to Newton's third law of motion, the ____ of the wings forces air down, and the equal and opposite reaction force is exerted up on the wing.
Down
- 1. A device that uses compressed gas to transfer pressure from one point to another.
- 2. The force that pushes an aircraft forward.
- 3. These use liquids to transfer pressure from one point to another.
- 5. The first way to increase pressure is to increase the density of the fluid in the cylinder by adding more of these.
- 6. The frictional force of air molecules exerted on a flying craft.
- 8. This device is used to lift dentist chairs, hospital operating tables, and cars at repair shops.
- 9. The pressure that fluids exert on their surroundings decrease as their speed increase.
- 12. This is defined as force per area.
- 14. The specific shape of aircraft wings.
- 16. Any additional pressure applied to a fluid is transferred in all directions throughout the fluid and even against the walls of the fluids container.
- 17. Any substances that takes the shape of its container.
- 20. The moveable parts of airplane wings that allow pilots to maneuver
- 22. The units used to measure pressure in the metric system.