[Image of a wind-up car diagram]
Parts of a Wind-up Car
* Body: The body of the car is usually made of plastic or metal. It houses the wind-up mechanism and the wheels.
* Wheels: The wheels of the car are usually made of plastic or rubber. They are attached to the axles, which are connected to the wind-up mechanism.
* Axles: The axles are metal rods that connect the wheels to the wind-up mechanism.
* Wind-up Mechanism: The wind-up mechanism is a spring that is wound up by turning a key. When the key is turned, the spring is wound up and stores energy.
* Release Lever: The release lever is a small lever that is used to release the wind-up mechanism. When the release lever is pressed, the spring is released and the car starts to move.
How a Wind-up Car Works
1. The wind-up mechanism is wound up by turning a key.
2. When the release lever is pressed, the spring is released and the car starts to move.
3. The wheels of the car turn as the axles rotate.
4. The car continues to move until the spring is completely unwound.
