Magnetism
If two magnets are moving toward each other, you can infer this about the poles.
What is they are opposite?
In order for a copper wire to create a magnetic field this must flow through the wire.
What is electricity?
The gravitational attraction between a space station and a planet depends on the the two objects' masses and their ___________.
What is distance from each other?
Another name for stored energy.
What is potential energy?
Another name for motion energy.
What is kinetic energy?
Would increase the magnetic force between magnets
Moving magnets closer together.
These two things can be attractive and repulsive.
What are electric and magnetic forces?
This type of force is only attractive.
What is gravitational force?
When two objects interact, this happens through forces.
What is energy is transferred?
You can turn them on/off. You can change their strength. You can reverse their polarity.
What 3 things make electromagnets so useful?
Because Earth is a giant magnet is protected by this.
What is a force field (magnetosphere)?
Increasing the number of batteries in a circuit connected to a small motor.
What would increase the speed of the motor?
As an object falls toward Earth the gravitational force increases due to this.
What is the distance decreases?
Doubling the charge and halving the distance between two electrically opposite charges.
What will increase the force of attraction?
When the magnet was dropped through the copper pipe, these help explain why it slowed down.
What are eddy currents?
In order for a magnet to induce an electrical force, it must be doing this.
What is moving?
What is lightning?
Doing these two things would change the gravitational force between two objects.
What is increase the distance and decrease the mass?
Water behind a dam and energy in a battery.
What are examples of potential energy?
What are three things that affect the strength of an electromagnet?
An electrical current induces a magnetic force and this can induce an electrical current.
What is a moving magnetic force?
The motion in a magnetic field causes these to move in an electric wire.
This exists between any two objects.
What is gravitational force?
When electricity flows through a motor to start it spinning, the electrical energy is transformed into this type of energy.
What is kinetic energy?
Gravitational, electric and magnetic all use force fields and act at a _______.
What is distance?