Electricity and magnetism ks3

When two magnets repel each other which poles are facing each other?

• North and South
• South and North
• North and North
• Positive and Negative

Tags

NGSS.MS-PS2-3

What happens to the magnetic force as an object gets further away from the magnetic field?

• The force increases
• The force decreases
• The force stays the same
• There was no force to begin with

Tags

NGSS.MS-PS2-3

What is a conductor?

• A material that stops electric current from flowing
• A material that allows electric current to flow easily

Which is an example of a conductor?

• Glass
• Plastic
• Copper
• Wood

What is an insulator?

• A material that DOES NOT allow electric current to flow
• A material that DOES allow electric current to flow

Which is an example of an insulator?

• Rubber
• Copper
• Iron
• Steel

What is magnetism?

• An invisible force produced by certain metals
• A visible force produced by certain metals
• An invisible force produced by all metals
• A visible force produced by mixtures of metals

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How do you increase the strength of an electromagnet?

• Decrease the number of batteries and increase the number of coils
• Increase the electric current and decrease the batteries
• You cannot strengthen an electromagnet
• Increase the electric current and increase the number of coils

Tags

NGSS.MS-PS2-3

What will happen to the other bulbs in the circuit if one bulb goes out?

• The other bulbs will go out
• The other bulbs will get brighter
• The other bulbs will get dimmer
• They will flash on and off

What will happen when a light bulb is removed from the circuit below?

• The remaining bulbs will go out
• The remaining bulbs will brighten
• The remaining bulbs will dim
• The brightness of the remaining bulbs will not change