Energy is the ability to do work. It exists in two basic states: kinetic energy and potential energy. Kinetic energy is the energy of motion and depends on an object's mass and speed, while potential energy is stored energy that depends on an object's position or composition. Energy can also exist in various forms including thermal, chemical, nuclear, mechanical, sound, light, electric, and others. Energy is constantly changing forms through transformations but can neither be created nor destroyed according to the law of conservation of energy. Non-renewable resources like fossil fuels are being used faster than the Earth can produce them, while renewable resources like solar and wind are replenished naturally.

1. ENERGY

2. What is ENERGY? Energy is the ability to do _______ Work

3. Work occurs when a _____ causes an object to _____ in the same direction as the force. move force

5. All forms of energy can be classified as Kinetic or potential. The two basic states of energy. So, what’s the difference?

9. 1) Potential energy is stored energy due to and object’s _____________ Position POTENTIAL ENERGY

10. 2) An object that is lifted from its position on Earth has __________ potential Energy which depends on ______ and mass gravitational POTENTIAL ENERGY height

11. 3) Massive objects have _____ potential energy than less massive objects more POTENTIAL ENERGY

12. 4) An object at a higher elevation will have _____ potential energy than an object at a lower elevation more POTENTIAL ENERGY

13. Kinetic is energy of ___________ Motion KINETIC ENERGY

14. 2) Kinetic depends on the _____ and the _______ of an object. MASS KINETIC ENERGY SPEED

15. 3) Faster objects have ____ kinetic energy than slower objects. More KINETIC ENERGY

16. FORMS OF ENERGY Both basic states of energy, Kinetic and potential, can exist in many forms!

17. The total ________ energy of the particles in matter. (molecular motion) Kinetic THERMAL (HEAT)

18. Heat energy STORED within the _____. Ex: Volcanic eruptions, geysers Earth GEOTHERMAL (HEAT)

19. Energy STORED in chemical ____ that can be released. Ex: food, fossil fuels, battery acid bonds CHEMICAL

20. Energy STORED in the ________ (center) of an atom . Ex: nuclear bombs nucleus NUCLEAR

21. Energy with which ______ objects perform work. Ex: Wind, flowing water, using a hammer moving MECHANICAL

22. A type of mechanical energy. It is the energy produced when objects ________. Ex: tuning fork, bell vibrate SOUND

23. A form of _______ energy that moves in a ______. Ex: lamp, stars radiant LIGHT wave

24. A form of energy produced by the ________ of ________ movement ELECTRICITY electrons

25. All forms of energy that come from the ______. SUN SOLAR ENERGY

26. Stored energy due to a change in the shape of an object. Ex: _______________ A stretched rubber band STORED MECHANICAL ENERGY:

27. STORED MECHANICAL ENERGY:

28. Do you remember the LAW OF CONSERVATION OF MASS AND ENERGY? ENERGY TRANSFORMATIONS

29. Law of Conservation of ENERGY: (same for mass) Mass/ NRG ____________ Mass/ NRG ______________ Mass/ Energy can only __________ Can’t be made Can’t be destroyed Change form!!!

30. Please read the paragraph… Energy is constantly changing form… ENERGY TRANSFORMATIONS

31. ENERGY TRANSFORMATIONS

32. Very often during the energy transformation process, some ____ energy is produced due to friction. This is wasted energy and is lost to the environment. heat UNUSABLE ENERGY:

33. An energy resource that is _______________________________________ . Being used faster than Earth Produces it What is a NON-RENEWABLE RESOURCE?

34. Examples: __________________ Fossil Fuels, minerals What is a NON-RENEWABLE RESOURCE?

35. To make our non-renewable resources last longer we can _____________________________________________ . Reduce Reuse Recycle What is a NON-RENEWABLE RESOURCE?

36. An energy resource that is _______________________________________ . Earth supplies faster than we use it “unlimited” What is a RENEWABLE RESOURCE?

37. Examples: _______________________________ Solar, wind, biomass (trees etc..) What is a RENEWABLE RESOURCE?

38. A renewable resource produces less _________ (substance that can harm living things and/or the environment pollution What is a RENEWABLE RESOURCE?

39. EARTH DAY GALLERY TOUR!

41. Example: