Magnetic Forces
What happens when opposite magnetic poles are close together?
✅ They attract each other.
Two like poles are facing each other. What will happen when released?
✅ They repel and move apart.
What type of energy is stored when magnets are held close together?
✅ Potential energy.
What happens to kinetic energy when an object’s speed increases?
✅ Kinetic energy increases.
When magnets start moving, which type of energy increases?
✅ Kinetic energy.
Two magnetic toy trains are close together with like poles facing. What happens next and why?
✅ They move away because the magnetic force pushes them apart.
Field lines connect from N to S between two magnets. What will happen?
✅ The magnets will attract.
Moving a magnet against the magnetic force causes what change in potential energy?
✅ Potential energy increases.
If a spaceship’s kinetic energy decreases, what happens to its speed?
✅ Its speed decreases.
When magnetic force causes motion, energy changes from ___ to ___.
✅ Potential energy to kinetic energy.
Why can magnets move even when they are not touching?
✅ Magnetic force acts at a distance.
One magnet is fixed. Another is moved toward it against the magnetic force. What happens to potential energy?
✅ It increases.
Which movement creates the largest increase in potential energy: moving a cart toward or away from a magnet?
✅ Moving it against the magnetic force.
Why does kinetic energy increase when magnets are released?
✅ Stored potential energy is converted into motion.
Does energy disappear when magnets move? Explain.
✅ No, energy changes form.
Two identical magnets are released. What determines how fast they move apart?
✅ Strength of the magnetic force and distance between them.
Using field line diagrams, how can you predict magnet motion?
✅ By seeing whether lines connect (attract) or push apart (repel).
Why does moving a magnet one space sometimes increase potential energy more than another move?
✅ Because it may be more directly against the magnetic force.
How are kinetic energy and speed related?
✅ As speed increases, kinetic energy increases.
What evidence shows potential energy changing into kinetic energy?
✅ Objects begin moving faster.
Explain why two magnets with like poles move apart when released.
✅ Like poles repel due to magnetic force acting at a distance.
Use magnetic field lines to explain attraction or repulsion.
✅ Connected lines show attraction; spreading lines show repulsion.
Which movement would create the greatest increase in potential energy and why?
✅ Moving a magnet directly against the magnetic force.
Explain how speed and kinetic energy change together.
✅ Higher speed means greater kinetic energy.
Describe how energy changes when magnets are released and move.
✅ Potential energy changes into kinetic energy.