Y8 Electricity

Why electrical wiring usually are covered with a layer of plastic?

• To make it look pretty

• To help electricity flow along the wire

• To make it safe

• To add more energy

Tags

NGSS.MS-PS1-3

What needs to be done to this circuit so that the lamp lights up?

• Close the switch

• Add a source and close the switch

• Add another lamp

• Add another lamp and a switch

Tags

NGSS.MS-PS3-5

Why is electrical wiring usually made from copper?

• Because copper is shiny

• Because copper conducts electricity

• Because copper is not magnetic

• Because copper insulate electricity

Tags

NGSS.MS-PS1-2

1. Which switch or switches must be closed to make the lamps light?

• Only switch 1

• Only switch 1

• Switches 1 and 2

• Switches 1 , 2 and 3

Tags

NGSS.HS-PS3-5

If lamp 1 is unscrewed from its holder, what will happen to lamp 2?

• It will get brighter

• It will stay the same brightness

• It will go out

• Nothing will happen

Tags

NGSS.MS-PS2-3

Why is a bulb brighter when it is powered by two batteries rather than one?

• Because the flow of electricity in the circuit is less

• Because the flow of electricity in the circuit is the same

• Because the flow of electricity in the circuit is greater

• Because the flow of electricity will go backward

Tags

NGSS.MS-PS3-5

A material that does NOT let electricity pass through it is called ...

• An electrical conductor

• An electrical insulator

• An electrical source

• An electric appliance

A series circuit has ____ path(s) that the electric current can take. 

• One
• Two 
• Three 
• Four

In a parallel circuit, if one connection is broken, all of the connections stop working.

• True
• False

An object through which electrons can easily flow is called a(n) ___________.

• Conductor
• Insulator

Tags

NGSS.HS-PS2-5