EnergyEnergy

Unit 2Unit 2

SoundSound

• Energy that can be Energy that can be heard.heard.

• Caused when Caused when things vibratethings vibrate

PitchPitch

• How high or how How high or how low a sound islow a sound is

VolumeVolume

• The loudness or The loudness or softness of a softness of a soundsound

LightLight

• A form of energy A form of energy that lets you see that lets you see things-things-

• Example: colorExample: color

ReflectReflect

• To bounce back, To bounce back, like light from a like light from a mirrormirror

AbsorbAbsorb

• To take something To take something inin

• Example: colors Example: colors can be absorbed or can be absorbed or reflectedreflected

HeatHeat

• A form of energy A form of energy that makes things that makes things warmer.warmer.

• Most heat on Earth Most heat on Earth comes from the comes from the sun.sun.

ConductorConductor

• An object that lets An object that lets heat or electricity heat or electricity go through easily.go through easily.

InsulatorInsulator

• An object that does An object that does not let heat or not let heat or electricity go electricity go through easilythrough easily

ElectricityElectricity

• A form of energy A form of energy that can be used to that can be used to make heat and make heat and light, and to power light, and to power machinesmachines

CircuitCircuit

• A path for an A path for an electric currentelectric current

• Often shown in a Often shown in a diagram with a diagram with a battery, bulb, and battery, bulb, and wireswires

Open CircuitOpen Circuit

• When the path of When the path of electricity is electricity is broken and the broken and the light does not light does not come oncome on

Closed CircuitClosed Circuit

• When the path of When the path of electricity is electricity is complete and the complete and the light comes onlight comes on

SwitchSwitch

• A device for A device for turning on or off turning on or off electricity or an electricity or an electric currentelectric current