Unit 5 Nouns

2. a standard altitude used in aviation to ensure safe distance between aircraft
4. a flashing light used to signal to other drivers that the car is turning
6. a force that causes something to rotate or turn around an axis
8. fluid a liquid used to transmit power within a machine, such as the braking system
11. a device that holds the brake pads and presses them against the disc to create friction
13. an event or occurrence, often one that is unpleasant or involves a safety breach
14. a sliding piece of metal inside a cylinder that moves under pressure to provide force
15. line a reinforced hose or tube that carries pressurized brake fluid to the wheels to stop the vehicle
16. pad a thin block that grips the disc in a vehicle's brake to slow down or stop it
17. a circular metal plate that rotates with the wheel and is squeezed by the pads to stop the car
18. the process of preserving or repairing a vehicle or machine to keep it in good working order
19. the glass window at the front of a vehicle that protects the driver and passengers
22. pedal the foot-operated lever used by the driver to activate the braking system
23. the height of an object, such as an aircraft, above sea level or ground level
24. a device that detects or measures a physical property (like tyre pressure) and records or responds to it

1. an instance of two objects, such as aircraft or cars, crashing into each other
3. the main pressure-generating device in the hydraulic system that converts pedal force into hydraulic pressure
5. a type of aircraft with large horizontal propellers on top that allow it to take off and land vertically
7. a system that uses radio waves to detect the distance, speed, and position of objects
9. the circular wheel used by the driver to control the direction of the vehicle
10. a lever used to keep a vehicle stationary, typically when it is parked
12. the compass direction in which an aircraft or vehicle is pointed or moving
16. a bar attached to the front or back of a car to reduce damage during a minor collision
20. the quality of being easy to press or bend, often used to describe the feel of a pedal or seat
21. level the measured amount of liquid (such as oil or coolant) currently in a reservoir