How can energy change?

How can energy change?

Forms of energy

sound energy

light energy

heat energy

electric energy

energy of motion

many objects transform energy as they work

-the light bulb transform electric energy into light energy

-a guitar transform energy of motion into sound energy

wind turbine

it transform wind energy ( energy of motion ) into electric energy

Multiple Choice

...................... transform energy of motion to electric energy

• wind turbine

• guitar

Multiple Choice

wind turbine transform .......................to elecric energy

• sound energy

• energy of motion ( wind)

Multiple Choice

the light bulb transform ....................energy into light energy

• heat

• electric

The light bulb

-it has a filament which acts as a resistor to transform electric energy into light and heat

-it heats up very fast and give off light and heat

Multiple Choice

The filament is a

• resistor

• insulator

Multiple Choice

...................changes electric energy into other form of energy for example heat or light

• A resistor

• insulator

Multiple Choice

.....................acts as a resistor in the light bulb and makes it give off light

• plastic

• filament

Multiple Choice

.........................is the force that acts when two surfaces rub together

• friction

• filament

Multiple Choice

....................is an object that uses electric energy in a circuit

• resistor

• book

Multiple Choice

A violin transform ..............................into sound energy

• energy of motion

• electric energy

Multiple Choice

Electric guitar transform .....................into sound energy

• electric energy

• light energy

types of materials

conductors: are materials that allow electricity to pas through

insulators: are materials that does not allow electricity to pass through

Multiple Choice

things that allow electricity to pass through are called ....................

• conductors

• insulators

Multiple Choice

things that doesn't allow electricity to pass through are called ....................

• conductors

• insulators