1. TOPIC: Energy
AIM: Describe the five forms of energy.
Do Now: Ditto – Mixtures #’s 1 – 5
Take out your periodic table activity
HW: Periodic Table Activity due tomorrow
CL Phases and Phase changes due Monday

2. Group (Family) 8, Period 5 2. Group (Family) 14, Period 4 = Ge
= Ru
2. Group (Family) 14, Period 4
= Ge
3. Group (Family) 18, Period 6
= Rn
4. Group (Family) 2, Period 4
= Ca

6. Energy in moves an object
Mechanical
Energy
Energy in moves an object

7. Examples:
Energy used to put a book on a shelf
Energy used to turn a car key

13. H H O Bond Energy stored in the chemical composition of matter

14. Bonds broken chemical energy released

15. Examples:
Released when wood or gasoline burns
Stored in food

16. Batteries, unlit match

18. Energy in moving particles of matter Heat Energy
Thermal
Energy

19. Atoms move faster  more thermal energy produced

20. Can cause phase changes
Examples:
Can cause phase changes
SOLID
GAS

21. Can result from friction

22. Almost everything changes to heat energy.

23. Transmitted through space in the form of electromagnetic waves
Energy
Transmitted through space in the form of electromagnetic waves

24. Ex: visible light, X-rays, microwaves

25. Produced when we cause electrons to move from one place to another
Electrical
Energy

26. Examples:
Electricity moving through a wire
Lightening bolts
Electrical coils on a stove

27. Energy stored in nucleus of an atom
Nuclear
Energy

28. When nuclei fuse together or break apart

29. Advantages of nuclear energy
Power plants could still produce electricity after coal and oil become scarce

30. Power plants need less fuel than ones which burn fossil fuels.
(One ton of uranium produces more energy than is produced by several million tons of coal or several million barrels of oil)

31. Do not produce air pollutants & CO2

32. Nuclear explosions produce radiation. Disadvantages of nuclear energy
harms body cells  illness or death
Reactor disaster = meltdown.
Fission reaction goes out of control  nuclear explosion
Disadvantages of nuclear energy

33. Chernobyl, Ukraine, 1986 = reactor core overheated during safety test
Chernobyl, Ukraine, 1986 = reactor core overheated during safety test. Materials in the core caught fire and caused a chemical explosion that blew a hole into the reactor. Radiation was carried by the wind. Twenty-eight people died of radiation sickness.

34. Fukushima nuclear accident resulted in a meltdown of 3 of the plant's 6 nuclear reactors. The failure occurred when the plant was hit by the tsunami triggered by the Tōhoku earthquake. Although no short term radiation exposure fatalities were reported, some 300,000 people evacuated the area, 15,884 (as of 10 February 2014) people died due to the earthquake and tsunami, and as of August 2013 approximately 1,600 deaths were related to the evacuation conditions, such as living in temporary housing and hospital closures.

35. The World Health Organization indicated that evacuees were exposed to so little radiation that radiation-induced health impacts are likely to be below detectable levels,[17] and that any additional cancer risk from radiation was small—extremely small, for the most part—and chiefly limited to those living closest to the nuclear power plant.

36. Water used to cool power plants
excess heat may kill organisms in streams & rivers it’s released into

37. Wastes release radiation
Cannot be thrown away like garbage
Stored in special cooling pools at the nuclear reactors

38. Mechanical
Mechanical

39. Flashlight = converts chemical energy (stored in the battery) to electrical energy to light the bulb. The bulb converts the electrical energy to electromagnetic energy.
Toaster = converts electrical energy into thermal energy.

41. Car engine = converts the chemical energy stored in the gasoline into mechanical and thermal energy.
Radio = converts electrical energy into sound energy.
Human body = converts chemical energy stored in food into mechanical energy for a beating heart and moving muscles.

42. Let’s summarize…
Identify the 5 forms of energy.
Identify another name for heat energy.
Describe what occurs to particles as temperature increases.
Where is chemical energy found? How is it released?
How is electromagnetic energy transmitted? Give one example.
Where is nuclear energy stored?
How is electrical energy produced?

43. Energy appears in many forms. Which form of energy is lightening?
Magnetic
Mechanical
sound
Electrical

44. A family is moving from Pennsylvania to Connecticut
A family is moving from Pennsylvania to Connecticut. As the moving van burns gasoline, it converts
chemical energy into mechanical energy
kinetic energy into potential energy
thermal energy into electrical energy
mechanical energy into kinetic energy

45. When an electric current flows through a metal filament of a light bulb, the electrical energy is converted into
heat energy, only
heat and light energy
light and motion energy
light energy only

46. Which energy source was developed through the invention of the atomic bomb?
Nuclear
Geothermal
Solar
Hydropower

47. An unlit match contains
Thermal energy
Electrical energy
Chemical energy
Nuclear energy

48. Which device produces mechanical energy?
A battery
A light bulb
An electric motor
A solar cooker

49. A song is playing on the radio
A song is playing on the radio. Which best describes the change in the flow of energy?
Electrical energy  light energy
Electrical energy  sound energy
Sound energy  light energy
Sound energy electrical energy

50. A bicycle rider ate breakfast before the ride
A bicycle rider ate breakfast before the ride. Which energy transformation occurred during the bike ride?
Mechanical to chemical energy
Chemical to mechanical energy
Mechanical to nuclear energy
Nuclear to mechanical energy

51. Windmills are used to convert wind energy to a more useful form
Windmills are used to convert wind energy to a more useful form. In most cases, there are steps in this process. The energy is in a different form in each step. Which of the following flowcharts shows the most likely order of the energy changes?
Wind energy  mechanical energy  solar energy
Wind energy  thermal energy  mechanical energy
Wind energy  solar energy  electrical energy
Wind energy  mechanical energy  electrical energy