Cat 1
Explain what a generator does
converts mechanical energy into electrical energy
Describe two ways to make an electromagnet stronger
Increase the electric current flowing through the wire coil. Increase the number of turns or coils of wire around the core
What occurs when objects with unlike charges are next to each other?
They attract each other
What is the difference between a conductor and an insulator?
A conductor is a material that allows the flow of a current, an insulator resists/blocks this flow
List 2 renewable resources
Solar, wind, tidal, hydrogen, hydroelectric, geothermal
Give an example of objects that change electricity to sound energy
radio, television, electric guitar
List 2 Nonrenewable resources
Crude oil, natural gas, coal
Give an example of objects that change electricity to light energy
Light bulb, television
A positively charged atom has more what?
protons
Explain how an atom can become charged
When it gains or loses electrons
Explain why a light bulb works in a closed circuit not does not work in an open circuit
A closed circuit allows the current to flow, like a racetrack. An open circuit prevents the current from flowing because there is a break in the track
A negatively charged atom has more what?
electrons
Why does a magnet stick to a refrigerator door
They are made of steel, which is a magnetic metal
Explain what an electric motor does
changes electrical energy to the energy of motion (kinetic energy)