Forces at a Distance

What will happen when two opposite poles of magnets are put together?

• They attract each other

• They repel each other

Tags

NGSS.3-PS2-3

In magnets and electromagnets, dissimilar (opposite) poles attract

• true

• false

When the strength of the magnetic field changes, the ________________________between the coil and the permanent magnet changes.

• attractive force

• polarity

• wire

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

As shown, the force shown between the phone and the mount is a

• contact force

• non-contact force

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What direction does the magnetic force point?

• Out of north, into south

• Out of south, into north

• Out of north and south

• It has no direction

Tags

NGSS.MS-PS2-3

What will happen when two like poles of magnets are put together?

• They attract each other

• They repel each other

Tags

NGSS.MS-PS2-3

Taking air out from between two magnets takes away the magnetic field.

• True

• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What factors affect the strength of magnetic forces?

• Distance between the magnets

• Number of magnets

• Number of coils

• Strength of the current

Tags

NGSS.MS-PS2-3

Which of the diagrams shows the greatest gravitational force?

• I

• II

• III

• IV

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-5

A magnet can hold a piece of paper to the door of a refrigerator. How does the magnet stick without touching the door?

• Gravity attracts the magnet to the door.

• The magnet induces a magnetic field in the paper.

• The magnetic force of the magnet can act at a distance.

• Atoms from the magnet pass through the paper and touch the door.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5