Vocabulary
to pull objects toward one another
What is attract
a push or a pull that can change the motion of an object
What is Force
5.Trevor moves a magnetic toy train away from a magnet that cannot move. The trains attract. What happens to the potential energy in the system of magnets during the movement?
A.The potential energy decreases because the train moves in the same direction as the magnetic force.
B.The potential energy decreases because the train moves against the magnetic force.
C.The potential energy increases because the train moves against the magnetic force.
D.The potential energy does not change because the magnets in the system do not change.
What is C.
EASY Points
Who is your middle school science teacher at Kennedy Community School?
Who is Mr. Schaefer
There is a repelling force between what? (500)
between like magnetic poles
to push objects away from each other
What is repel
to provide evidence that goes against a claim
What is refute
3. In a computer simulation, Jeffrey moves a magnet (Magnet 2) toward another magnet (Magnet 1) that cannot move. The magnets repel. What happens to the potential energy in the system of magnets?
A.The potential energy does not change because the magnets in the system do not change.
B.The potential energy increases because Magnet 2 moves against the magnetic force.
C.The potential energy decreases because Magnet 2 moves against the magnetic force.
D.The potential energy decreases because Magnet 2 moves in the same direction as the magnetic force.
What is B
4.Ramon puts two magnetic toy trains very close to each other on a track (S pole facing S pole). What will happen next, and why?
A.The trains will move closer to each other because the magnetic force will pull the trains together.
B.The trains will not move because the magnets are not touching.
C.The trains will move away from each other because the magnetic force will push the trains apart.
D.The trains will move away from each other because the magnets are not touching.
What is C
There is an attracting force between what? (400)
opposite poles
the space around a magnet in which magnetic forces can act on objects
What is magnetic field
the energy that an object has because it is moving
What is kinetic energy
What happens to two magnets when they are held close together (S and S poles towards each other) and they are released?
A.The magnets will move away from each other.
B.The magnets will move closer to each other.
C.The magnets will not move.
D.The magnets will move away from each other because they are not touching.
What is A.
What materials are attached to magnets?
A. wood
B. cottonball
C.paperclip
D. penny
What is C
Give an example of a system involving magnets. (100)
Ex. Launch pad and the rocket.
Paperclip and Magnet
Maglev train and track
a type of magnet in which the magnetic field is produced by an electric current
What is electromagnet
to change from one type to another
What is convert
1. Based on the magnetic field lines, what will happen when they are released to two magnets held in place if their field lines connect?
A.The magnets will repel.
B.The magnets will attract.
C.The magnets will not move.
What is B.
A spaceship is traveling through space. Suddenly, its speed increases. What can you say about the kinetic energy of the spaceship?
A.The kinetic energy increases as its speed increases.
B.The kinetic energy decreases as it is converted into speed.
C.The kinetic energy remains the same because speed and kinetic energy are not related.
D.There is no way to know what happens to the kinetic energy.
What is A
What kind of energy has increased when you hold a magnet against the magnetic force? (200)
potential energy
a line that connects opposite magnetic poles and represents the strength and direction of the magnetic field
What is magnetic field line
something that can be changed and may be measured
What is variable
A spaceship is traveling through space. Suddenly, its kinetic energy decreases. What is most likely to be true about the speed of the spaceship?
A.The speed increases as the kinetic energy is converted into speed.
B.The speed decreases as the kinetic energy decreases.
C.The speed remains the same because speed and kinetic energy are not related.
D.The speed increases to make up for the decrease in kinetic energy.
What is B.
How does magnetic force affect the energy in a system of magnets when the magnets are released and begin to move?
A.The magnetic force increases the potential energy in the system.
B.The magnetic force decreases the kinetic energy in the system.
C.The magnetic force changes kinetic energy into potential energy.
D.The magnetic force changes potential energy into kinetic energy.
What is D.
What kind of magnet can be turned on and off? (300)
Electromagents are magnets that use electricity to act like magnets.