Forms of Energy
The energy of waves you can see.
Example: Rays of sunshine
Light energy
What do we call the energy that flows through a circuit?
Electrical current
What is energy transfer?
The movement of energy from one object to another, OR the change of energy from one form to another.
A material that allows an electrical current to pass through it.
Conductor
The energy of vibrations you can hear.
Example: Your voice
Sound energy
What was the source of energy in the circuits we built?
Battery
Think about our experiment with the lamp and the ice cubes. The lamp turns light energy into _________________ energy, causing the ice cubes to melt.
Thermal (heat) energy
A material that does NOT allow an electrical current to pass through it.
Insulator
The energy of motion.
Example: Spinning fan blades
Mechanical energy
What do wires do in a circuit?
Wires conduct the electric current, meaning energy flows through them.
Think about our pencil sharpener. It turns ________________ energy into mechanical energy in order to sharpen our pencils.
Electrical
Barbie doll
Insulator
The energy related to temperature.
Example: An oven
Thermal (heat) energy
[See slideshow]
Why isn't the lightbulb lighting up?
The circuit is incomplete - the circuit needs to be closed for the energy to flow.
Think about what happens when a firetruck drives by our building. This is evidence that ______________ energy can ______________ far distances.
sound; travel
Paperclip
Conductor
The energy from charged particles moving through a conductor.
Example: A battery-operated toy
Electrical energy
[See slideshow]
Why isn't the lightbulb lighting up?
The switch is open. If we close the switch, it will work.
Think about a wind turbine. It turns _______________ energy into ____________ energy.
Mechanical (wind); electrical
In a circuit with a lightbulb, a battery, and wires, which part is the conductor?
The wires