Continue with Microsoft TeamsRead About How Machines Need Energy
Vocabulary
Read the vocabulary terms to understand the reading better.
A battery is a device that uses chemical reactions to make electricity.
Energy is the ability to do work or to make something move or change in some way.
A machine is a device that does a specific physical task. Machines need energy to work.
A plug is a small plastic object that fits into an electrical circuit to connect the object to electricity.
A recharger is a device that puts more energy into batteries.
A wall outlet is a socket, usually in a wall, that connects an object to electricity.
Machines Need Energy
Machines need energy to work.
Where does the energy come from?
Plug It In
Some machines have a plug at the end of a cord. The plug goes into a wall outlet. Energy from the wall outlet goes into the machine. Now the machine will work.
Be safe! Stay away from wall outlets. Ask an adult to put a plug into a wall outlet. Ask an adult to pull out a plug.
Use Batteries
Some machines do not have a cord with a plug. How do they get energy? They get energy from batteries. The energy in batteries gets used up over time. Then the machine stops working. It is time to put in new batteries.
Be safe! Ask an adult to put new batteries in a toy or machine.
Rechargeable Batteries
You can use rechargeable batteries over and over again. What happens when all the energy is used up? You can use a recharger. A recharger puts more energy into batteries. A recharger has a plug that goes into a wall outlet.
Energy from the wall outlet goes into the batteries. Soon the batteries are full of energy again. They are ready to go back into a machine.
Be safe! Children should not use a recharger. Always ask an adult to recharge batteries.
