Week 3 - Motors, Generators and Turbines

What two forces are required for generators and electric motors to work?

• magnetism and thermal

• electricity and thermal

• electricity and magnetism

• magnetism and radiant

Generators are devices that convert _____ energy into _____ energy.

• chemical; mechanical
• mechanical; electrical
• electrical; mechanical
• potential; kinetic

In a _______ a spinning turbine moves magnets which generates an electric current.

• Motor

• Generator

What can you use to make an electromagnet?

• Battery, nail and string 
• Battery, pencil and wire
• Wire, battery and iron ore (nail)
• Peanut butter, lampshade, hand sanitizer

What is the transfer of energy when you plug in a motor and it spins?

• chemical to mechanical

• electrical to mechanical

• mechanical to electrical

• physical to potential

What energy do you put IN to a generator?

• Mechanical
• Electrical
• Thermal
• Potential

What type of energy comes OUT of a generator?

• Mechanical
• Electrical
• Thermal
• Potential

In an electric motor, the energy transformation begins as  ----

• electrical and becomes chemical
• mechanical and becomes electrical
• electrical and becomes mechanical
• mechanical and becomes chemical

A material in which electrons are able to move easily

• Circuit
• Insulator 
• Resistance 
• Conductor 

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