4th Grade SCIENCE: Chapter Six
Terms in this set (50)
There are different kinds of electricity, but all electricity is the result of electrical __.
To understand electrical charge, you have to start with __. Everything around you is made of this.
There are __ types of electrical charges.
A positive electrical charge and a negative electrical charge __ each other.
All matter is made up of tiny __.
Most matter has the same number of positive and negative charges. These two charges cancel each other out so the matter is __, and has no electrical charge.
These charges move more easily
To have more of one kind of charge than another is
The buildup of electrical charges on an object
The movement of static electricity from one object to another
Materials that let charges flow through them easily
Plastic on wires is an __ that protects you from being shocked.
Materials that do not let charges flow through them easily
Opposite electrical charges __ each other.
A movement of static electricity
Electrical charges pass easily through these
Electrical charges do not pass easily through these
A flow of electrical charges is known as an
When you plug a device into an outlet, the device becomes part of a __.
The path along which electric current flows
A simple circuit has __ basic parts.
Many circuits have a __, which turns electric current on and off.
To keep charges moving, the circuit can not have any __.
A complete, unbroken circuit is called a __.
If a circuit has any breaks or openings, it is called an __.
Electric current can not flow in an __ circuit.
All the electrical charges flow in the same direction, on a single path in a __ circuit.
The parts of a series circuit are connected in one __.
A circuit in which the electric current flows through more than one path
A parallel circuit includes different paths, often called __.
The strength of a power source
Voltage is measured in units called __.
The ability of a substance to oppose or slow down electric current is called
Resistance allows electrical energy to be changed into other forms of energy, such as light and __.
A path with no resistance is sometimes called a
In a __ circuit, the wire heats up and may cause a fire.
__ circuits have one path for electric current.
__ circuits have many paths for electric currents.
The amount of current that flows through a circuit depends on voltage and __.
Inside an incandescent light bulb is a thin wire called a __.
These are used to change the voltage of electric current
Before electric current reaches your home, it must be changed to a lower voltage through a __ transformer.
This stops the flow of electrical charges by switching off the current if it gets too high
This melts if the electric current in the circuit gets too high
Electrical energy can be _ to other forms of energy such as light, heat, and motion.
Fuses and circuit breakers are __ devices that protect against dangerous amounts of electric current.
Fluorescent bulbs do not become as hot as __ bulbs.
Electrical motors change electrical energy into __.
Electric current flows through a bulb's __.
When electrical charges build up and stay in one place