The production of this type of energy requires moving water.
What is hydroelectric power?
100
Type of circuit needed for an output device to work - such as for a light bulb to light.
What is a closed circuit?
100
This is a device that can be used to open and close a circuit.
What is a switch?
100
The original source of all energy on the Earth.
What is the Sun?
200
Words containing "therm" pertain to this.
What is heat?
200
Energy of movement or motion.
What is mechanical energy?
200
This type of wire is an excellent conductor.
What is copper wire?
200
A material that does not conduct heat or electricity - such as rubber or plastic.
What is an insulator?
200
The names of the planets - in order from the Sun.
What is: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune?
300
This word part means "earth."
What is geo?
300
Burning firewood is an example of using this type of fuel to produce thermal energy.
What is biomass, or biofuel?
300
The lights in your house go off. Somewhere there must be a/an __________ circuit.
What is open?
300
A material that easily allows electrical current to flow through.
What is a conductor?
300
This part of the water cycle happens in the clouds.
What is condensation?
400
Words containing this have something to do with light.
What is photo?
400
Using heat from under the Earth's surface to heat water to create steam to generate electricity is called this type of energy.
What is geothermal?
400
The three things that a good closed circuit must have.
What are: a power source, an output device, wire?
400
A battery is an example of this.
What is a power source?
400
Fossils are the remains of these from millions of years ago.
What are plants and animals?
500
A biologist is a scientist that studies this.
What is life - plants and animals?
500
Light and thermal energy from the Sun are also called this.
What is Solar energy?
500
Students were given materials to complete a circuit to turn on one light. The materials were 2 wires, a AA battery, and various sizes of light bulbs. The variable in this investigation is __________.