Conductors
What is a conductor?
A material that allows electricity to flow through it easily.
What is an insulator?
A material that does not allow electricity to flow through it easily.
Why should you never stick metal objects into an electrical outlet?
It can cause an electric shock or start a fire.
Who is credited with inventing the light bulb?
Thomas Edison.
Name a common household item that is a good conductor.
Metal spoon, copper wire, or aluminum foil.
Name a common household item that is a good insulator.
Rubber, plastic, or wood.
Why is it dangerous to use electrical devices near water?
It can cause an electric shock or start a fire.
What is the unit used to measure electric current?
Ampere
Is water a conductor or an insulator?
It can be a conductor if it has impurities like salt.
Why are insulators important in electrical wires?
They protect us from electric shocks by covering the conductive wires.
What should you do during a thunderstorm to stay safe from lightning?
Stay indoors and away from windows.
What is the speed of electricity?
Close to the speed of light (about 186,000 miles per second).
What is the best conductor of electricity?
Silver (but copper is most commonly used).
Is glass a conductor or insulator?
Insulator.
What is a ground wire, and why is it important?
A safety wire that directs extra electricity into the ground to prevent shocks.
What is the name of the device that converts sunlight into electricity?
Solar panel.
Name a liquid that is a good conductor of electricity.
Saltwater.
What is the purpose of rubber coating on electrical tools?
To insulate and protect users from electric shocks.
Why should you unplug appliances during a storm?
To protect them from power surges caused by lightning.
What is static electricity?
A buildup of electric charge on the surface of an object.