5A/B: Electricity & Magnetism Flashcards
What is electricity made up of?
Microscopic negatively charged particles known as electrons.
List the parts of an atom.
Nucleus
Neutron
Proton
Electron
What is electricity a form of?
Electricity is a form of energy.
Electrical energy can change or transform into other types of energy. Name 4 types it can change into.
light, thermal/heat, mechanical/motion, and sound energy.
What are two ways that we often “find” electricity?
- Naturally occuring electricity
- Man-made electricity
What is the difference between man made and naturally occurring electricity?
- Naturally occuring electricity is something that is found in nature that can produce its own electricity.
- Man-made electricity is created by humans and usually requires some type of power source.
List 4 examples of naturally occuring electricity.
- heart
- brain
- electric eel
- lightning
- firefly
- vampire squid
- anglerfish
What is an example of a man made electrical source?
GAME BOY AND PHONE :D
Other answers work too!
What is are some more examples of man made electricity?
TV, lights, computers, ipods, fans, vehicles, coffee machines, chromebook, etc.
What are 4 electrical safety rules?
- Never use electricity in or near water.
- Never place to many plugs in one socket.
- Never play near or on power lines.
- Never pull a plug, by its cord.
- Never stick anything into a plug in.
- Never run electrical cords under rugs.
- Never use an electric lawn mower on wet grass or when it is raining.
- Never play on power boxes.
- Never stick anything metal into a toaster.
- Never use a frayed cord.
11.
Should you use electricity in or near water? Why?
No you should not, you could get an electrical shock since water is a good conductor of electricity.
Should you run a electrical cord under rugs?
No you might start a fire and burn your house down. You can also trip over the cord and land on your face.
Do you ever stick anything metal in a toaster?
No otherwise you might get shocked because metal is a good conductor of electricity.
ONLY STICK METAL IN AN UNPLUGGED TOASTER
Should you use a frayed cord and plug it in?
No you could start a fire or get zapped…
What is a short circuit? How is it caused?
Occurs when an electrical connection is made where it shouldn’t be.
For example: wires touch when they shouldn’t, or water touches the circuit, causing the circuit to overheat.
What is a fuse? Can they open or close a circuit? Why are they important?
A fuse a thin piece of metal that can interrupt the flow of electrons. Fuses open the circuit because they overheat and burnout causeing a gap. They act as a safety feature to prevent shirt circuits and overheating.
What are the two kinds of batteries?
Wet cells and Dry cells.
What is a wet cell?
A battery composed out of a liquid/acid. This liquid conducts electricity because it contains electrolytes.
What is a load?
A load is something that uses electricity.
What is a source?
A source is where the electricity comes from.
What materials make the best conductors of electricity?
metals, such as silver, gold, copper, and aluminum
How is a series circuit different from a parallel circuit?
A series circuit only has one path, but a parallel circuit has different paths for the electricity to flow.
A _____ is a pathway through which electricity flows.
circuit
When you turn the switch “on”, the circuit is _____ and the path is unbroken (electricity will flow through it).
closed
When you turn the switch to “off”, the path is _____ or broken (electricity stops flowing).
open
A circuit has a switch, a wire, a battery, and a bulb. When the switch is flipped, the light turns on because of the energy supplied by the battery. Which energy is used in this circuit when it is closed?
Chemical energy from the battery is transformed into light energy.
Mrs. Smith rubbed an air-filled balloon on her hair. She then touched the balloon to the wall and the balloon stuck to it. What made the balloon stick to the wall?
The static electricity on the balloon had an opposite charge as the wall, so the opposite charges attract and the balloon stuck to the wall.
_____ electricity is caused by a build up of charge, while current electricity happens when electricity _____.
a. Positive; negative
b. Electromagnet; circuit
c. Static; flows
d. Circuit; conductor
c. Static; flows STATIC electricity is caused by a build up of charge, while current electricity happens when electricity FLOWS.
Four light bulbs are connected in a series circuit. What will happen to the other bulbs one of them burns out?
The rest of the bulbs will go out (will not light) because the circuit has been interrupted.
Four light bulbs are connected in a parallel circuit. What will happen to the other bulbs if bulb 2 and bulb 3 burn out?
The other two bulbs will continue to light, because a parallel circuit has multiple paths for the electricity to flow.
Name three materials that are good electrical insulators.
glass, plastic, and rubber are good insulators
_____ is a form of electricity in which electrical charges collect on a surface of an object.
a. Short Circuit
b. Electromagnet
c. Current electricity
d. Static electricity
Static electricity
A material through which electricity can flow easily is called a/an _____. a. insulator b. circuit c. conductor d. charge
Conductor
A material that slows or stops the flow of electricity is called a/an _____. a. insulator b. circuit c. conductor d. charge
Insulator
A temporary magnet that is made by an electric current is called a/an ______. a. insulator b. conductor c. permanent magnet d. electromagnet
Electromagnet
_____ is a form of electricity in which electrical charges move from one place to another.
a. Current electricity
b. Static electricity
c. Moving electricity
d. Electromagnets
Current electricity
What types of charges attract? What types of charges repel?
Opposite charges attract; Like charges repel.
What is a conductor?
A conductor is a material that lets electrons flow through it easily.
What is a parallel circuit?
A parallel circuit has two or more paths for the electrons to flow.
What is an insulator?
An insulator does not allow electrons to flow through it.
What is a resistor?
A resistor slows down the flow of electrons.
What is a series circuit?
A series circuit has only one path for electrons to flow through.
What is static electricity?
Static electricity is a build up of electrons.
What is current electricity?
A flow of electrons?
What is an electrical current?
An electrical current is when the electrons flow or move.
Explain static electricity.
Build up of electrons.
Explain current electricity.
Flow of electrons.
What is a conductor?
Something that lets electricity pass.
What happens when a series circuit has two light bulbs and one dies?
The whole circuit shuts down since the pathway is inerrupted.
What is a conductor? Give me some examples.
Is something that allows electricity to flow. Most metals: copper, aluminum, graphite, and even water are good conductors.
An electrical _______ is when the electrons flow or move.
Current
