True! Energy can only be transferred from form to form
100
What is conduction?
transfer of heat that occurs when one thing touches another
100
Give 1 example of a conductor and 1 example of an insulator.
Conductor - metals such as copper, iron, gold, and silver.
Insulator - plastic, rubber, glass, dry wood
200
What is a conductor?
A material through which an electric charge can move easily
200
What is an insulator?
A material through which an electric charge moves with difficulty
200
What is electrical energy? Give 1 example
Electrical energy is caused by the movement of electrically charged particles.
Examples: computer, stove, toaster, lights, etc. Anything that uses electricity
200
Which way does heat move between objects?
(does it move from warmer to cooler or from cooler to warmer)
It moves from warmer to cooler
200
What is a resistor?
A resistor transforms electrical energy to other forms of energy.
300
What is kinetic energy?
the energy of motion
300
What is potential energy?
energy that is stored in an object
300
What is sound energy? Give an example.
Sound energy is the energy of vibrations carried by air, water, or other matter.
Example: alarm clock, music, etc. Every sound that you can hear plus some you can't!
300
What would happen to a metal spoon if you placed it into a cup of hot chocolate and left it?
What about a wooden spoon?
The metal spoon would heat up
The wooden spoon would not heat up
300
If you have a set of lights that are wired in a series circuit, what would happen if one bulb goes out?
What if the lights were in a parallel circuit?
series circuit - if one bulb goes out, so do the others
parallel circuit - if one bulb goes out, the others will stay lit
400
What is a parallel circuit?
A circuit with 2 or more paths through which electricity can move
400
What is a series circuit?
A circuit with 1 path through which electricity can move
400
What is light energy? What is thermal energy?
Light energy travels as waves and can move through empty space. Example: sun, light bulbs
Thermal energy is energy in the form of heat. Example: oven
400
True or false
Radiation does NOT need particles to touch in order to transfer heat.
True - radiation, such as the sun's rays, can travel through space
400
What is a filament? Where will you find a filament?
A filament is a thin, coiled wire that can get very hot without melting. You will find a filament in a light bulb.
500
What is convection?
The transfer of thermal energy as matter moves (oven)
500
What is radiation?
Energy that is sent out in waves, as when the sun warms your skin
500
List 3 forms of potential energy.
gravity
chemical
elastic
500
A toaster uses resistors to transform electricity into what other form of energy?
Heat
500
List the 4 parts of a circuit and tell what each part does.
1. Energy source - provides energy to move electric charges
2. Wires - provide a path through with current can flow
3. Resistors - transform electrical energy into other forms of energy
4. Switch - opens and closes a circuit