1
The interactions between moving electric charges is also known as __________.
Electricity
Energy can be transferred through _______, _______, ________.
Sound, light, and heat
What is kinetic energy
Energy that is working, energy of motion.
What is potential energy?
Energy that is waiting to work, stored energy.
All sound starts with
A vibration
As electric currents move through a burner, it creates
Heat
A steam engine uses heat to create energy transferred as
Motion.
The tiny coil inside of a lightbulb is called a __________.
Filament
What is an electric current?
A flow of electric charges
What type of energy does a filament in a light bulb produce?
Energy transferred as heat
An electric current happens when like charges move in _____________ direction.
The same direction.
Electric currents that are changed into vibrations create
Sound
What usually forms a path for an electric current?
A metal wire.
Where does a remote control car’s motor MOST LIKELY get its energy from?
The batteries.
The more air that flows past a turbine, the faster or slower it moves?
The faster the turbine moves.
Why might a light bulb feel hot if you touched it?
When the electric current passes through the filament of a light bulb, some of its energy is converted to heat.
To transfer energy carried by light to an electric current, you need a ______.
A solar cell
A device that uses an electric current to produce motion is called a _______.
Motor
In a speaker, an electric current moves a cone-shaped part, which transfers energy to
The air
Which of the following is true of energy carried by sound, light, and heat?
A. The energy is conserved.
B. The energy is transferred.
C. The energy is converted.
A. The energy is conserved