A balloon has a negative charge. A glass rod has a positive charge. What will happen when the glass rod is brought near the balloon?

The balloon will be attracted to the rod.

The letters N and S show the magnetic poles. Francisco 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.

The letters N and S show the magnetic poles. Jerome puts two magnetic vehicles very close to each other. What will happen next, and why?

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

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

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

Ike is conducting an experiment involving clear adhesive tape. He performs the following steps: 1. He removes two strips of tape from the roll. 2. He presses each strip of tape, sticky side down, on a plastic surface. 3. He quickly removes each strip of tape from the plastic surface. Ike's teacher tells him that this process has caused each strip of tape to gain a negative electric charge. What should Ike do next to demonstrate that the negative charge of each strip has generated an electric field?

Check whether the strips repel each other when brought close together.

What happens to the kinetic energy and gravitational potential energy of a ball during free fall?

Gravitational potential energy decreases, and kinetic energy increases.

Compare the potential energy of paper clips near a magnet to when they were farther away.

They have less potential energy, because they have less ability to gain additional kinetic energy.

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.

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 increased because the train moves against the magnetic force.

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.

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.

What happens to the potential energy in the system of magnets when Dakota moves a magnetic toy train toward a magnet that cannot move?

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

In a computer simulation, Noni moves a magnet (Magnet 1) away from another magnet (Magnet 2) that cannot move. What happens to the potential energy?

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

What action increases the force applied to the wheels of a toy car with an electric motor?

Increasing the number of loops in the electromagnet's coil.

Which movement will increase the potential energy in the system the most? The letters N and S show the magnetic poles. Peter sets identical magnetic carts on two tracks. At the end of each track is a large magnet that cannot move. Peter can move the carts one space to the left or one space to the right.

Moving the cart on Track 1 one space to the left (←).

What change to an electromagnet with a nail, a battery, and five coils of wire would produce the strongest magnetic field?

2 batteries and 20 coils of wire

What will happen if you touch a metal paperclip to the nail?

The paperclip will stick to the nail.

The letters N and S show the magnetic poles. Pablo sets identical magnetic carts on two tracks. At the end of each track is a large magnet that cannot move. Pablo can move the carts one space to the left or one space to the right. Which movement will increase the potential energy in the system the most?

Moving the cart on Track 1 one space to the left (←).

How can Jori investigate the relationship between the distance from the microwave and the strength of the electromagnetic field (EMF) when she makes popcorn?

Jori can hold an EMF meter at different distances from the microwave while she is making popcorn and take measurements.

In a computer simulation, Noni moves a magnet (Magnet 1) away from 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.

An engineer is experimenting with two identical magnetic roller coaster cars on different sides of a center magnet that cannot move. The engineer is planning to move one car one space. Which movement will result in the largest increase in potential energy?

Moving Car 1 one space away from the center magnet.

Magnetic Fields Flashcards

Student preview

40 questions

Show all answers

1.

FLASHCARD QUESTION

Front

Rules about Magnets: Magnets attract some metals.

Back

True

2.

FLASHCARD QUESTION

Front

Rules about Magnets: Magnets repel wood.

Back

False

3.

FLASHCARD QUESTION

Front

A magnet must be touching an object to repel it.

Back

False

4.

FLASHCARD QUESTION

Front

Rules about Magnets: Magnets can move other objects from a distance.

Back

True

5.

FLASHCARD QUESTION

Front

Rules about Magnets: Magnets can attract or repel other magnets.

Back

True

6.

FLASHCARD QUESTION

Front

Can a magnet's strength be determined by its size and construction?

Back

True

7.

FLASHCARD QUESTION

Front

The diagram shows a negatively charged balloon. When the charged balloon is brought near some pieces of paper, the papers are attracted to the balloon. Which describes the charging of the pieces of paper?

Back

Positive

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