static electricity
circuits
conductor/insulator
magnets
general knowledge
100
1.Objects that have LIKE charges: 2.Objects that have UNLIKE charges:
1.Repel 2.Attract
100
Name the four parts of a circuit
Battery, wire, switch, light bulb
100
A conductor is:
a material through which electric charges can easily flow
100
What is a magnet?
an object that can push or pull on iron without touching the metal; a metal object that sticks to other metals.
100
Name the object that is considered to be the earliest use of magnetism.
a compass
200
What in nature is an example of static electricity?
Lightning
200
________circuits connect components along a single path.
Series circuits
200
Name two examples of conductors
Copper, Iron, Gold, Water, Aluminum, Steel, silver
200
If the north poles of two magnets are close, they will:
Repel
200
electric _______ work like generators in reverse. They use electric current to spin magnets, which can be attached to fans, wheels, or blades.
motors
300
You rub a plastic comb with wool. Why will the comb then attract small bits of paper? a. The comb has a magnetic attraction. b. The bits of paper have electric discharge. c. The comb and paper both have a negative charge. d. The comb has a negative charge.
d. The comb has a negative charge.
300
________circuits have more than one path for the current.
Parallel circuits
300
An insulator is:
An insulator is a material through which an electric charge cannot easily flow
300
What is a a naturally magnetic rock called?
A lodestone
300
__________make electricity by spinning magnets around coils of wire, which creates an electric current in the wire.
Generators
400
What is it called when electrons move quickly from one object to another?
Electric Discharge
400
Explain how a light bulb works
The filament wire is very thin, so electrons have a hard time passing through. When electrons do pass through, the filament becomes hot and begins to glow
400
Give three examples of materials that are insulators
Most plastics, Glass, Cloth, Sand, Rubber, Wood, Dry air
400
Name two uses of magnetism.
1. a compass to guide travelers 2. motors (fans, cars, blenders, etc.) 3.encode information (credit cards, computers, video tapes, store sensors, roller coasters, high speed trains, MRIs
400
Every material is made up of extremely tiny particles called?
atoms
500
Explain what happens when you rub a balloon on your head and then stick it to the whiteboard
The balloon picks up electrons from your hair giving it a negative charge and then attracts to the positive charge of the whiteboard
500
When a light switch is turned "on," would that be considered and open circuit or a closed circuit?
A closed circuit.
500
Explain how you can test whether an object in an insulator or a conductor
Build a circuit and see if the object lights the bulb or not
500
Magnetism is an invisible ______ that can push, pull, or move some metals, such as iron or steel.
force
500
The invisible shape formed by the lines of force around a magnet is called the what?
magnetic field
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