Forces & Fields
This type of force, like gravity or magnetism, can push or pull an object without touching it.
What is a non-contact force?
Two like poles will do this when pushed toward each other.
What is repel?
This is a material, like copper, that allows electricity to flow through it easily.
What is a conductor?
This device is created by coiling wire around a metal core and adding current.
What is an electromagnet?
This device takes electrical energy and turns it into mechanical energy.
What is a motor?
This is the specific subatomic particle that moves to create an electrical current.
What is an electron?
This is what a North pole and a South pole will do when they get close.
What is attract?
This type of electricity is a "buildup" of positive or negative charges on a surface.
What is static electricity?
This is the easiest way to turn an electromagnet "off."
What is stopping the electrical current?
This device takes mechanical energy and turns it into electrical energy.
What is a generator?
This invisible area surrounds an object and exerts a force on other objects within it.
What is a force field?
This tool uses a small magnet to align with Earth’s magnetic poles.
What is a compass?
Rubber and plastic are examples of this, which prevents the flow of electricity.
What is an insulator?
Doing this to the wire will make an electromagnet stronger.
What is adding more coils?
A ceiling fan or a blender is a common household example of this.
What is a motor?
As you move further away from a magnet or a charged object, this happens to the strength of the field.
What is it gets weaker (decreases)?
This is the type of magnet that can be turned on or off.
What is an electromagnet?
This is the type of electricity where charges move continuously through a wire.
What is current electricity?
Doing this to the power source will make an electromagnet stronger.
What is increase the voltage (current)?
A wind turbine or a hand-cranked radio is a common example of this.
What is a generator?
A friction force is this type of force.
What is a contact force?
These are the two factors you can change to increase the strength of any force field.
What are magnitude (strength) and distance?
Current electricity always produces this type of field around the wire it flows through.
What is a magnetic field?
This is the part of the electromagnet that the wire is usually wrapped around.
What is the core (like an iron nail)?
These are the two main components found inside both motors and generators to make them work.
What are magnets and coils of wire?