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100
A spaceship is traveling through space. Suddenly, its speed increases. What can you say about the kinetic energy of the spaceship?
The kinetic energy increases as its speed increases.
100
Ramon puts two magnetic toy trains very close to each other on a track. What will happen next, and why?
The trains will move away from each other because the magnetic force will push the trains apart.
100
Based on the magnetic field line diagrams, what will happen next with these two magnets?
They will attract
100
In a computer simulation, Jeffrey moves a magnet (Magnet 2) toward another magnet (Magnet 1) that cannot move. What happens to the potential energy in the system of magnets?
The potential energy increases because Magnet 2 moves against the magnetic force.
100
What are 5 everyday uses of magnets?
1. MRI
2. MagLev train
3. Rollercoasters
4. Fridge magnets
5. Wireless charging
200
What happens to the energy in a system of magnets when the magnetic force causes two magnets to move?
Some potential energy changes into kinetic energy.
200
Eli is holding two magnets close to each other. What will happen when he lets go?
The magnets will move away from each other because the magnetic force will push the magnets apart.
200
Based on the magnetic field line diagram, what will happen next with these two magnets?
They will repel
200
Abdul moves a magnetic toy train away from a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement?
The potential energy increases because the train moves against the magnetic force.
200
Explain how magnets are used in the rails of MagLev trains to make them levitate
Strong like magnets repel each other to make the train levitate
300
A spaceship is traveling through space. Suddenly, its kinetic energy decreases. What is most likely to be true about the speed of the spaceship?
The speed decreases as the kinetic energy decreases.
300
Julia puts two magnetic toy trains very close to each other on a track. What will happen next, and why?
The trains will move away from each other because the magnetic force will push the trains apart.
300
Based on the magnetic field line diagram, what will happen next with these two magnets?
They will attract
300
In a computer simulation, Juan moves a magnet (Magnet 1) closer to another magnet (Magnet 2) that cannot move. Which statement accurately describes the change in potential energy?
The potential energy increases because Magnet 1 moves against the magnetic force.
300
Explain how magnets are used to propel the MagLev trains forward (instead of gasoline)
Strong opposite poles attract the train to move it forward
400
How does magnetic force affect the energy in a system of magnets when the magnets are released and begin to move?
The magnetic force changes potential energy into kinetic energy.
400
Sharona puts two magnetic toy vehicles very close to each other. What will happen next, and why?
The toy vehicles will move away from each other because the magnetic force will push the toy vehicles apart.
400
Based on the magnetic field line diagram, what will happen next with these two magnets?
They will repel
400
Trevor moves a magnetic toy train away from a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement?
The potential energy increases because the train moves against the magnetic force.
400
Describe *in detail* how electromagnets are used to make music in airpods.
Alternating poles of the magnet inside the airpod attract or repel a flat surface in the airpod to create sound waves
500
If the velocity of an object doubles, how much does the Kinetic Energy change?
A) doesn't change
B) It also doubles
C) It's halved
D) It's x4
D) x4
Because KE = 1/2 * m * v2
500
Is the electricity flows TOWARDS the North pole of the electromagnet, will these repel or attract?
Repel
500
Draw the magnetic field lines for the following system:
500
Is the electricity flows towards NORTH, how should yo increase the potential energy in this system?
Move them closer together
500
What are 3 reasons electromagnets are more commonly used in daily life?
1. We can control their strength
2. We can turn them on and off
3. We can switch their poles