Magnets, Motors, Generators

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

• magnetism and thermal 
• electricity and thermal 
• electricity and magnetism 
• magnetism and radiant 

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Generators are devices that convert _____ energy into _____ energy.

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

Tags

NGSS.HS-PS3-3

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

• Motor

• Generator

Tags

NGSS.HS-PS3-3

What happens to the strength of an electromagnet as you add more coils around it?

• Increases
• Decreases
• Stays the same
• Stops completely

Tags

NGSS.HS-PS2-5

What energy do you put IN to a generator?

• Mechanical
• Electrical
• Thermal
• Potential

Tags

NGSS.HS-PS3-3

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

Tags

NGSS.HS-PS3-3

Iron, Nickel and cobalt are all __________________ materials

• Shiny
• poles
• magnetic
• cold

Tags

NGSS.MS-PS2-3

Decreasing the strength of magnets will make the motor...

• spin faster

• spin slower

• spin in the opposite direction

• it won't have any effect

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Switching the poles of a magnet will make the motor...

• spin faster

• spin slower

• spin in the opposite direction

• it won't have any effect

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

The strength of the magnetic field produced by a flowing current in a wire is affected by:

• The size of the Current
• The distance from the wire
• The number of coils of wire
• All 3

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5