Review Lesson on Motors and generators

Which of the following describes both electromagnets and bar magnets?

• Attracts iron

• Core is nickel, cobalt or iron

• Both A and B.

• Neither A nor B.

Which of the lists below describes the energy a TV has when it is turned on?

• sound and heat

• heat and light

• light, heat, and sound

• light and sound

Which best describes how a motor works?

• When a fan blows on a wire, it causes it to spin, creating a force.

• When a fan blows on a wire, it causes it to spin, creating an electrical current.

• When a wire that carries electrical current is placed in zero gravity, the wire experiences a force.

• When a wire that carries electrical current is placed in a magnetic field, the wire experiences a force.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which statement best explains the flow of energy through a motor?

• battery-->electrical current-->copper wire rotor -->magnet--> mechanical energy

• battery--> magnet--> electrical current--> copper wire rotor--> mechanical energy

• magnet--> mechanical energy--> copper wire rotor--> battery--> electrical current

• magnet--> copper wire rotor--> mechanical energy--> battery--> electrical current

Tags

NGSS.HS-PS3-3

NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is the transfer of electricity in a generator?

• Mechanical to Electrical 
• Physical to Potential 
• Electrical to Mechanical
• Yogurt to Light

Tags

NGSS.HS-PS3-3

NGSS.HS-PS2-5

a motor converts electrical current into

• chemical energy

• chemical force

• mechanical force

• mechanical life

Tags

NGSS.HS-PS3-3

electricity can be converted into magmatism

• false

• true

Tags

NGSS.HS-PS3-3

electric generators converts mechanical force into

• mechanical energy

• magmatism

• electric current

• electric energy

Tags

NGSS.HS-PS3-3

true or false- motors and generators are opposites

• true

• false

what two forces are required for generators electric motors to work

• chemical and thermal energy

• magnetism and thermal energy

• thermal and electric energy

• electrical and magnetism

Tags

NGSS.HS-PS3-3

NGSS.HS-PS2-5