Energy Transformation Worksheet s1

ENERGY TRANSFORMATION WORKSHEET KEY

ENERGY-the ability to do work. LAW OF CONSERVATION OF ENERGY-energy cannot be created or destroyed it can only change forms through transformation.

2 KINDS: POTENTIAL ~CHEMICAL-energy stored in the bonds of atoms and molecules Ex: natural gas and coal ~MECHANICAL (STORED)-energy stored in objects by tension Ex: rubber bands, slingshot ~NUCLEAR-energy stored in the nucleus of an atom Ex: ~GRAVITATIONAL-energy stored in an object’s height Ex: riding a bicycle down a hill, roller coaster on steep incline ~ELECTRICAL (STORED)-energy stored in a battery Ex: stored energy used to power a cell phone

KINETIC ~RADIANT (ELECTROMAGNETIC)-travels in waves Ex: visible light, x-rays, gamma rays, radio waves ~THERMAL-heat energy Ex: heater ~MOTION-energy stored in the movement of objects. Ex: Ocean waves, moving car ~SOUND-energy movement through sound waves or vibrations ~ELECTRICAL (FLOWING)-electrical energy that flows through a circuit. Ex: an electrical plug, electricity flowing through a wire.

EXAMPLES OF ENERGY TRANSFORMATIONS

STARTING ENERGY TRANSFORMED INTO EXAMPLE CHEMICAL HEAT (THERMAL) CHARCOAL BURNING

ELECTRICAL MECHANICAL MIXING BOWL

ELECTRICAL SOUND RADIO

ELECTRICAL HEAT (THERMAL) TOASTER OVEN

CHEMICAL HEAT (THERMAL) LIGHTING A MATCH

MECHANICAL ELECTRICAL WINDMILL ELECTRICAL HEAT (THERMAL) HAIR DRYER

ELECTRICAL LIGHT LIGHT BULB

YOU CAN HAVE A CHAIN OF ENERGY TRANSFORMATION. FOR EXAMPLE:

A WIND TURBINE THAT IS CONNECTED TO ELECTRICAL LINES THAT POWERS A RADIO WOULD BE AN EXAMPLE OF MECHANICAL ENERGY TRANSFORMED INTO ELECTRICAL ENERGY THAT IS TRANSFORMED INTO SOUND ENERGY.

MECHANICAL ------ ELECTICAL------ SOUND

IF YOU ARE AT THE TOP OF THE HILL, YOU HAVE THE MOST POTENTIAL ENERGY BEFORE YOU START TO GO DOWN THE HILL. THE HIGHER THE HILL, THE MORE POTENTIAL ENERGY YOU HAVE.

THE GREATEST KINETIC ENERGY IS THE LOWEST POINT, RIGHT AFTER IT HAS GAINED SPEED GOING DOWN THE HILL AND RIGHT BEFORE IT STARTS TO GO UP HILL. IT ALSO HAS THE GREATEST KINETIC ENERGY RIGHT BEFORE IT HITS THE GROUND.

WHEN A BATTERY IS RUNNING LOW, IT HAS DECREASING POTENTIAL ENERGY.

REMEMBER THE SUN IS AN EXAMPLE OF RADIANT (HEAT) ENERGY. THE SUN IS USED TO WARM MANY THINGS.