Magnetic field lines can cross and eventually will cross at some point.

• True
• False

The further you move the compass away from the magnet, it will stop pointing towards the north or south and will start pointing at random objects.

• True
• False

Magnetic field lines decrease in strength the further you move away from a magnet.

• True
• False

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The experiment with the magnet and compass showed the magnetic field lines. Why do the lines not cross?

• The field lines did cross.
• The field lines are arranged from stronger to weaker where the stronger ones are closer to the magnet.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If you are given a random sample of mixed materials and it does contain iron filings, which of the following would you use to remove the iron filings?

• A magnet
• Water
• A strainer or funnel
• A piece of wood

When two magnets with opposite poles face each other, their magnetic fields...

• form two fields, which look like two distinct fields around each magnet
• form one field, which looks like a circle between the magnets

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

When two magnets with like poles face each other, their magnetic fields...

• form two fields, which look like two distinct fields around each magnet
• form one field, which looks like a circle between the magnets

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How can you increase the strength of an electromagnet?

• Decrease the number of coils
• Increase the number of coils

Tags

NGSS.MS-PS2-3

How can you increase the strength of an electromagnet?

• Add more batteries
• Subtract batteries

Tags

NGSS.MS-PS2-3

Which of the following materials are required to make an electromagnet?

• A copper wire
• A copper core
• An iron wire
• A wood core