Chapter 7 Magnetism and Electricity

what is the unit for energy?

• newton

• joule

• force

• volt

• ampere

which one is renewable energy?

(there is more than 1 answer)

• fossil fuel

• water

• solar

• radioactive substances

• wind

p is positively- charged.

what charge is Q?

• positive

• negative

• neutral

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

what is the name of this tool?

• insulator

• dosimeter

• electroscope

• microscope

the longer the wire,

the _________ the resistance.

• lower

• greater

• similar

• different

the direction of magnetic field moves from the ________ to the ________.

• south , north

• south , west

• north , south

• east , west

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

the direction of magnetic field can be shown by a __________.

• compass

• pin

• needle

• clock

Tags

NGSS.MS-PS2-3

what is this rule?

• left hand rule

• left hand grip rule

• right hand rule

• right hand grip rule

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Why is copper classified as a conductor?

• Electric current travels easily through copper.
• Copper may gain or lose electric charges.
• Copper resists the flow of electrical current.
• None of the other answer choices

Why are the wires in electric circuits often coated with plastic?

• The plastic carries the electric current.
• The plastic keeps the electric current inside the wire.  
• The plastic allows the wire to bend into different shapes.
• The plastic acts as a switch to turn the electric current on or off.