Magnetic Fields CHECKPOINT

Which type of magnet produces a magnetic field most similar to Earth’s?

• BAR MAGNET

• HORSESHOE MAGNET

• ELECTROMAGNET

• TEMPORARY MAGNET

Tags

NGSS.MS-PS2-5

Which of the following is found in all magnets?

• AN ELECTRICAL FIELD

• A TRANSFORMER

• A NORTH POLE AND A SOUTH POLE

• A GEOGRAPHIC POLE

Charged particles from the Sun interact with Earth’s _______________________ to form the Northern Lights (Aurora Borealis).

• magnetic field

• water vapor

• pollution

• clouds

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NGSS.MS-PS2-5

NGSS.MS-PS2-3

Which statement best compares the magnetic field of Earth to the magnetic field of a bar magnet?

• Magnetic field lines around Earth are symmetrical but magnetic field lines around a bar magnet are not symmetrical.

• Magnetic field lines around Earth are in a circular pattern but magnetic field lines around a bar magnet extend away from the magnet.

• Magnetic field lines for both Earth and a bar magnet are generated from convection currents.

• Magnetic field lines for both Earth and a bar magnet emerge from their north poles.

Which diagram shows a magnetic field most similar to the magnetic field of Earth?

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Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3

Which of the reasons below explains how magnets can attract or repel objects without touching them?

• The gravitational force surrounding each magnet acts at a distance.

• The magnets share electrons and act at a distance.

• The magnets generate static electricity.

• A magnetic field surrounds a magnet and exerts a magnetic force.

Tags

NGSS.MS-PS2-5

Which magnet below would provide the best example for the magnetic poles and magnetic fields of Earth?

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Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3

When you break a bar magnet into two pieces, you get _________________.

• two south poles

• a piece of iron that is no longer a magnet

• two north poles

• two north poles and two south poles

The picture below shows a piece of iron before it has become magnetized.  What will the domains (groups of atoms) look like after it is magnetized?

• None of the above.

• They will all line up in the same direction.

• Half of them will line up in one direction and the other half will line up in the other direction.

• They will look the same.

Tags

NGSS.MS-PS2-3

How would you label pole 3 in the picture below?

• North because it is being attracted to pole N across from it.

• South because it is being attracted to pole N across from it.

• North because it is being repelled from pole N across from it.      

• South because it is being repelled from pole S across from it.

Tags

NGSS.MS-PS2-5

NGSS.MS-PS2-3