Unit 5 - Q3 DCA1

How do two magnets interact when placed adjacent to

each other (end-to-end)?

• Two opposite poles facing each other will attract and two like poles near

  each other will repel.

• When two poles of a magnet are near one

  another they will always attract.

• When two opposite poles are near one another

  they will repel.

  When two like poles are near one

  another they will attract.

• When two poles of a magnet interact with each

  other no magnetic field exists.

Which picture shows the stronger magnetic field?

• Adjacent Unlike Poles

• Adjacent Like Poles

• Neither.

  They do not have any magnetic field.

• Neither.

  They show the same magnetic field.

When magnets repel (push), it is an example of

what?

• magnetic field

• magnets current

• electric force
• magnetics' force

This is a picture of floating magnets.

What is the relation between the forces

acting on the upper magnet?

• The one acting upward is greater than the one

  acting downward.

• The one acting downward is greater than the

  one acting upwards.

• Both act in the same direction.

• They are equal forces.

This is a picture of floating magnets.

What are the forces acting on the upper magnet?

• Gravity and the magnetic force are attracting it

  to the lower magnet.

• Gravity and the magnetic force are pushing it

  away from the lower magnet.

• Two magnetic forces: one attracting it to the

  lower magnet and another pushing it away from

  the lower magnet.

• The upper magnet's weight and mass.

This is a picture of a floating magnet.

What is the relation between the force the lower

magnet applies to the upper magnet and the

force the upper magnet applies to the lower one?

• They are equal.

• They act in opposite directions.

• They get stronger as the magnets get closer to

  one another.

• All of the above.

Which question would enable you to collect data about he strength of a magnetic field?

• What happens to a magnet in a fire?

• How many nails can a magnet hold?

• What is the effect of moving a magnet near a compass?

• How many batteries are used in an

  electromagnet?

This is a picture of a floating magnet.

Why does the top magnet appear to float above the bottom magnet?

• The magnets are made of different materials.

• The like poles of the magnets repel each other.

• The opposite poles of the magnets repel each

  other.

• The magnets have a different gravitational pull.

In this picture, why does the top magnet appear to be floating above the other magnets?

• The magnets are made of different materials.

• The like poles of the magnets repel each other.

• The opposite poles of the magnets repel each other.

• The magnets have a different gravitational pull.

In an experiment, what variable is changed on purpose?

• Independent variable

• Dependent variable

• Controlled/Constant variable

• No variable is changed on purpose