Types of Energy
Energy that allows us to see
light energy
That which is needed to do work
Energy
When a light switch is closed, energy moves through the wires and is changed into ________ type of energy.
light
A solar-powered flashlight converts light energy from the sun into __________ energy to power the light.
electrical
Energy that travels as waves through air or water and vibrates the eardrum
sound energy
Taken up (or in) by something
Absorbed
The amount of energy a wind turbine produces depends on and changes with _________ _________.
wind speed
When two objects collide, energy can transfer between them, changing their motion is an example of _______
collision
Energy that causes a change in temperature between materials
heat or thermal energy
A material that blocks the flow of things like electricity and heat, keeping them from passing through easily
Insulator
Which of the following is evidence that electrical energy can be moved from place to place?
Power plants that make electricity–
a. cost quite a bit of money to build and run.
b. are often very far from the places that receive the electricity.
c. sometimes use moving water to make electricity.
d. need people and materials to make electricity.
A pot on a stove heats up from the burner by conduction, is an example of ________ _________.
heat transfer
A type of energy that comes from the movement of tiny, charged particles called electrons
electrical energy
The flow of electrical energy through a circuit
Electric currents
When the lamp is turned on and the bulb is lit, it shows that electrical energy -
a. moves in straight lines.
b. is produced by moving water.
c. can be changed into light energy.
d. is the fastest-moving form of energy.
Materials that do not transfer heat easily are ____________
insulators
Energy stored inside the tiny bonds that hold atoms together
chemical energy
Describes a change in an object’s position in comparison to other objects
Motion
A toaster converts electrical energy into thermal energy (heat) and ________ energy.
light
Materials that transfer heat well are __________.
conductors