turbine

generator

Steam

cloud

generator

turbine

steam

electricity

The extension cord makes the fan more powerful.

The extension cord transfers electric currents from the outlet to the fan.

The extension cord transfers sound energy to the fan.

Resistance

electrical current

static electricity

voltage

voltage source

conductor

insulator

resistor

material that increases the number of charged particles

material through which electricity flows easily

Hair dryer

- Alarm clock

Cell phone

-          allows or stops the flow of electricity

-          absorbs electricity

a magnet

-          a resistor

-          nonrenewable resources

renewable resources

-          unlimited resources

-          Heat and pressure turn animal and plant remains into fuels.

-          On the surface of Earth, wind and rain turn fossils into fuels.

wood

oil natural

gas

coal

-          fossil fuel

-          alternative energy resource

wind

water

sunlight

oil

-          take so long to form that they cannot be replaced quickly

-          cause no pollution to the environment, so they are the best kind to use

-          cause so much pollution that they are never used

-          Humans use coal for food.

-          Humans use coal to produce electricity.

-          Humans use coal for medicine.