Battery, Motor, Gear, Wheel

In the picture

1. 1Battery: stores chemical energy and provides electrical energy.
2. 2Wire: carries electrical energy from the battery to the motor.
3. 3Motor: converts electrical energy into rotational motion.
4. 4Gear: transfers rotational motion and changes speed or torque.
5. 5Wheel: receives rotational motion and turns.

Examples

• An electric bike uses a battery, motor, and gears to turn its wheels.
• A toy car with a battery-powered motor drives its wheels through gears.

Quiz: Battery, Motor, Gear, Wheel (Age 14)

1. 1

   Which part is the source that stores chemical energy and provides electrical energy?

   • Motor
   • Wire
   • Battery
2. 2

   What does the motor do in this energy chain?

   • It stores chemical energy and provides electrical energy.
   • It converts electrical energy into rotational motion.
   • It transfers rotational motion and changes speed or torque.
3. 3

   Which statement about energy in this chain is correct?

   • Energy is destroyed when the wheel turns.
   • Energy can be stored, transferred, and converted, but it is not created or destroyed.
   • Energy is created when the motor turns.

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.