Magnetic Fields Unit Review

What causes Earth's magnetic field?

• Earth's liquid iron core moving around

• Heat from Earth's mantle

• The gravitational pull of the Sun

• Electromagnetic radiation from the moon.

Do magnets need to be touching each other in order to attract or repel?

• YES

• NO

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

For magnets that are repelling, the magnetic field lines...

• Connect only to the same magnet

• Connect to both magnets involved in the system

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When the poles of a magnet are opposites, the magnets will ____________ .

• repel and then attract

• attract and then repel

• repel

• attract

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If the magnetic field lines between two magnets are connected, that means the magnets will _________.

• attract

• repel

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A line that connects opposite magnetic poles and represents the strength and direction of the magnetic field...

• magnetic isotope

• magnetic field line

• magnetic pole

• magnetic end

Tags

NGSS.MS-PS2-5

In a system of magnets, LESS potential energy is stored in the magnetic field when the magnets are moved ________ the magnetic force.

• WITH

• AGAINST

Tags

NGSS.MS-PS3-2

In a system of magnets, where is potential energy stored?

• At the north pole of the magnet

• At the south pole of the magnet

• In the outermost layer of the magnet

• In the magnetic field between magnets

Tags

NGSS.MS-PS3-2

A magnetic force can convert potential energy stored in a magnetic field to kinetic energy.

• TRUE

• FALSE

Tags

NGSS.MS-PS3-5

The energy used to move a magnet against a magnetic field is STORED as. ____________ energy in the magnetic field.

• gravitational

• elastic

• potential

• kinetic

Tags

NGSS.MS-PS3-2