Electric Circuits
The pathway taken by an electric current.
What is a circuit?
An item that does not conduct electricity.
What is an insulator?
Name 3 types of energy.
Thermal
Radiant
Mechanical
Electrical
What flows through a wire to create a magnetic field?
A current.
In an experiment, things that do not change are __________.
Constants
A continuous flow of electrical energy.
Copper, aluminum, and iron
The Sun gives off _________ energy.
Radiant.
We see this in the form of light.
True or False.
The strength of an electromagnet can be affected by changing the number of coils (wraps around the object), the amount of current, and the thickness of the battery, and the iron core.
False.
The strength of an electromagnet can be affected by changing the number of coils (wraps around the object), the amount of current, and the thickness of the WIRE, and the iron core.
What part of the experiment is purposefully changed or manipulated?
The Independent Variable
True or False.
A closed circuit allows the flow of electrical energy.
True.
True or False.
Some objects can be both an insulator or conductor.
True.
Depending on what part of the object you connect to the circuit. Example, a wire with metal prongs and wire with plastic surrounding it.
Movement of objects and substances.
What is mechanical energy?
Name 2 places electromagnets are used in everyday life.
Scrapyards, doorbells, TVs, and computers.
What is the part of the experiment that changes as a result?
The Dependent Variable
True or False.
A break somewhere in the circuit means it is a closed circuit and a light will not light.
False.
A break in the circuit means it is an OPEN circuit and a light will not light.
Static electricity is the transfer of ___________ charged particles between materials.
Negatively charged
True or False.
Energy is can be created.
False.
Energy cannot be created or destroyed.
True or False.
An open circuit is needed to create an electromagnet.
False
A closed circuit is needed to create an electromagnet.
Name AND describe 2 types of data.
Qualitative Data: Information that can be observed using the 5 senses.
Quantitative Data: information that can be measured using numbers.
In a ____________ circuit, there are two or more paths for the current to flow through.
Parallel
Some electrons move from one material to another creating a positive or negative charge. Opposite charges attract.
BONUS! What is a natural occurrence of static electricity?
Heat is from the transfer of __________ energy from one substance to another.
Thermal
True or False.
There are permanent magnets and temporary magnets.
True
What is the name of steps a scientist takes to test an idea?
The Scientific Method
Bonus!
Name the 5 steps