Grade 6 Unit 5 Magnetic Fields Chapter 1-3 Test

 In a system of magnets, there is a repelling force with ____ poles.

• 1. different

• 1. like

• 1. neutral

• 1. none of these

Sharon puts two magnetic toy vehicles very close to each other.

Toy 1 has North pole and Toy 2 has a South pole. What will  happen next, and why?

• The toy vehicles will not move because the magnets are not touching.

• The toy vehicles will move closer to each other because the magnetic force will pull the vehicles together.

• The toy vehicles will move away from each other because the magnets are not touching.

• The toy vehicles will move away from each other because the magnetic force will push the toy vehicles apart.

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Cecilia puts two magnetic toy trains very close to each other on a track.

What will happen next, and why?

• 1. The trains will not move because the magnets are not touching. 

• The trains will move closer to each other because the magnetic force will pull the trains together.

• The trains will move away from each other because the magnets are not touching.

• The trains will move away from each other because the magnetic force will push the trains apart.

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 Based on the magnetic field line diagrams, what will happen next with these two sets of magnets?

• 1. The magnets in Set 1 will repel, and the magnets in Set 2 will attract.

• 1. The magnets in Set 1 will attract, and the magnets in Set 2 will repel.

• The magnets in Set 1 will not move, and the magnets in Set 2 will attract.

• 1. In both sets, the magnets will attract.

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 Based on the magnetic field line diagrams, what will happen next with these sets of magnets?

• The magnets in Set 1 will attract, and the magnets in Set 2 will repel.

• The magnets in Set 1 will attract, and the magnets in Set 2 will not move.

• 1. The magnets in Set 1 will repel, and the magnets in Set 2 will attract.

• In both sets, the magnets will attract.

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What type of energy is used when an object is in motion?

• 1. electrical energy

• thermal energy

• kinetic energy

• potential energy

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 What type of energy is stored in an object?

• electrical energy

• thermal energy

• 1. kinetic energy

• 1. potential energy

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 A spaceship is traveling through space. Suddenly, its speed increases. What can you say about the kinetic energy of the spaceship?

• The kinetic energy remains the same because speed and kinetic energy are not related.

• 1. The kinetic energy decreases as it is converted into speed.

• The kinetic energy increases as its speed increases.

• There is no way to know what happens to the kinetic energy.

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The letters N and S show the magnetic poles.Dakota moves a magnetic toy train toward a magnet that cannot move. What happens to the potential energy in the system of magnets during the movement?

• 1. The potential energy increases because the train moves against the magnetic force.

• 1. The potential energy decreases because the train moves against the magnetic force.

• 1. The potential energy decreases because the train moves in the same direction as the magnetic force.

• The potential energy does not change because the magnets in the system do not change.

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A student is investigating the strength of electromagnets she created using batteries, wire, and nails. The student hypothesizes that the number of coils has a cause-and-effect relationship on the strength of the magnetic devices she made. Which would be the best way for the student to test the devices to be sure that her hypothesis is accurate?

• She should give the devices the same number of coils and retest them.

• She should increase the distance between the devices and the paper clips.

• She should repeat the same tests on each device again to collect more data.

• She should use just one length of nail and test more of a variety of coil numbers, including 0 coils.

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