Presentation is loading. Please wait.

Presentation is loading. Please wait.

Notes 2: Sources and Forms of Energy Learning Goal: Describe different sources of energy Determine the starting and ending form of energy for various objects.

Similar presentations


Presentation on theme: "Notes 2: Sources and Forms of Energy Learning Goal: Describe different sources of energy Determine the starting and ending form of energy for various objects."— Presentation transcript:

1 Notes 2: Sources and Forms of Energy Learning Goal: Describe different sources of energy Determine the starting and ending form of energy for various objects

2 FORMS OF OUR ENERGY WE USE ENERGY IN SEVERAL FORMS. –WHY ? EFFICIENCY OF USE MOST ENERGY MUST BE TRANSFORMED, OR CHANGED, TO BE USEFUL KINETIC –THE ENERGY OF MOVEMENT –ANY MOVING OBJECT POTENTIAL –STORED ENERGY POSITION CHEMICAL

3 MECHANICAL KINETIC –THE ENERGY OF MOVEMENT –ANY MOVING OBJECT POTENTIAL –STORED ENERGY POSITION CHEMICAL

4 HEAT ( THERMAL ) THE ENERGY OF MOVING ATOMS OR MOLECULES –MEASURED INDIRECTLY THERMOMETER

5 RADIANT ENERGY THAT TRAVELS THROUGH SPACE –LIGHT –RADIO –TV –X-RAY

6 ELECTRICAL THE MOVEMENT OF ELECTRONS THROUGH WIRE –VERY USEFUL –BUT MUST BE CHANGED TO SOME OTHER FORM TO BE USED –VERY EASY TO CHANGE –ONLY USEFUL IF CHANGED INTO A DIFFERENT FORM OF ENERGY

7 CHEMICAL THE ENERGY THAT BONDS MOLECULES TO EACH OTHER –FOOD PHOTOSYNTHESIS –FUELS PHOTOSYNTHESIS –RELEASED WHEN MOLECULAR BONDS ARE BROKEN

8 NUCLEAR LOCKED INSIDE THE NUCLEUS OF ATOMS DIFFICULT TO UTILIZE –BUT VERY POWERFUL RELEASED IN TWO WAYS –FISSION SPLIT A BIG ATOM INTO TWO SMALLER ONES –FUSION JOIN TWO SMALLER ATOMS INTO A LARGER ONE

9 PRIMARY SOURCES OF OUR ENERGY JUST AS THERE SEVERAL FORMS OR TYPES OF ENERGY THERE ARE ALSO SEVERAL SOURCES OF ENERGY IN OTHER WORDS, WHERE DOES OUR ENERGY COME FROM

10 THE SUN PROVIDES ENERGY IN TWO WAYS

11 1. DIRECTLY FROM THE SUN RADIANT ENERGY WE CALL THIS SOLAR ENERGY THIS ENERGY IS USED RIGHT AWAY AND IS NOT STORED –SOLAR POWERED CARS –SOLAR HEAT

12 2. STORED SOLAR ENERGY CHEMICAL –STORED BY PHOTOSYNTHESIS IN PLANTS COAL AND PETROLEUM WHEAT, CORN, ANY TYPE OF VEGETATION MEAT MECHANICAL –WIND –WATER BEHIND DAMS

13 OCEAN TIDES MECHANICAL –TIDAL MOVEMENT OF THE OCEANS –HARNESSED TO PROVIDE ENERGY BY GENERATION OF ELECTRICITY

14 EARTHS HEAT - GEOTHERMAL INTERNAL HEAT OF THE EARTH –HEAT HOMES –RUN TURBINE GENERATORS TO PRODUCE ELECTRICITY NOT AVAILABLE EVERYWHERE

15 FISSION FUELS ENERGY FROM THE NUCLEUS URANIUM IS THE USUAL FUEL SPLIT A BIG ATOM INTO TWO SMALLER ONES VERY LARGE ENERGY SOURCE

16 FUSION FUELS ENERGY FROM THE NUCLEUS JOIN TWO SMALLER ATOMS INTO A LARGER ONE USUALLY HYDROGEN AND LITHIUM ISOTOPES ARE THE FUEL –DEUTERIUM AND TRITIUM THE ENERGY SOURCE OF THE SUN AND THE STARS NOT POSSIBLE ON THIS PLANET - YET

17 THEY ARE ALL A –EXCEPT 8 = D 9 = C 13 = C 16 = E 17 = E


Download ppt "Notes 2: Sources and Forms of Energy Learning Goal: Describe different sources of energy Determine the starting and ending form of energy for various objects."

Similar presentations


Ads by Google