Forces, Electricity and Magnetism

Which of the following is a device in which magnetism is produced by an electric current running through a wire wrapped around an iron or steel core?

• electromagnet

• battery

• generator

• motor

Which of the following in true about the relationship between electricity and magnetism?

• electricity can be used to create a magnet

• magnetism and electricity cannot be converted into one another

• magnetism is based on how gravity attracts electrical energy

• electrical energy and magnetism cancel each other out

Tags

NGSS.MS-PS2-3

How can a magnet be used to produce an electric current?

• hold the magnet next to a wire

• connect a wire to each end of a magnet

• wrap wire around the magnet

• spin the magnet around inside a coil of wire

Tags

NGSS.HS-PS2-5

Lightning could be compared to which of the following

• running water

• a wave

• thunder

• a spark

What will happen if you increase the electric current that is flowing through an electromagnet?

• the magnet will become weaker

• the poles of the magnet will reverse

• the magnet will become stronger

• the magnet will become permanent

Tags

NGSS.MS-PS2-3

Which of the interactions between statically charged objects is described when hair sticks to a balloon.

• postive charge and positive charge

• negative charge and negative charge

• negative charge and positive charge

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A magnet cannot not move which of the following objects?

• a paper clip
• a nail
• a toothpick
• a staple

Magnets have a north and a south ___________

• shape
• color
• pole
• region

Why does a compass needle point north?

• The compass is a bar magnet
• Because north is up
• Because it's magic
• It lines up with the Earth's magnetic field

What do the lines around this magnet represent?

• North Pole
• South Pole
• Magnetic Declination
• Magnetic Field