Chapter 13 Energy Review K. Bollendorf 2009
Dec 31, 2015
Chapter 13 Energy Review
K. Bollendorf
2009
Table of Contents
Slide 1: Title Page Slide 2: Table of Contents Slide 3: Energy Slide 4: Types of Energy Slide 5: Gravitational Potential Slide 6: Elastic Potential Slide 7: Mechanical Slide 8: Thermal Slide 9: Chemical Slide 10: Electrical Slide 11: Electromagnetic
Slide 12: Nuclear
Slide 13: Energy Conversions Slide 14: Light Bulbs Slide 15: TVs Slide 16: Trees Slide 17: Fossil Fuels Slide 18: Nuclear Slide 19: Hydroelectric Slide 20: Wind Slide 21: Solar Slide 22: Sources Slide 23: About the Author
Sources About the Author
Energy
Energy is defined as the ability to do work or cause change
Types ConversionsForms
Click on one of the buttons below to learn more
Ways to Conserve
There are two main types of energy: Potential-
energy that is stored and held in readiness
Kinetic- energy in motion when any object is
moving it has kinetic energy
Types
Types of Potential Energy:
1. Gravitational- depends on an object’s height
Example: Sky diving; the greater the altitude you jump from, the greater your gravitational potential energy
Types of Potential Energy:
2. Elastic- objects that can be stretched or compressed
Examples: rubber band and a coil spring
Forms of Energy:
1. Mechanical- associated with motion or position of an object
Example: Riding a bike requires mechanical energy.
Forms of Energy:
2. Thermal- associated with an increase in temperature due to the increased movement of molecules within a substance
Example: Grills produce the thermal energy that cooks hamburgers
Forms of Energy:
3. Chemical- stored in chemical bonds
Examples: Stored in the food you eat, wood, or fossil fuels
Forms of Energy:
4. Electrical- energy carried in moving electrical chargers
Examples: Power lines or a car battery
Sources of Electrical Energy
Forms of Energy:
5. Electromagnetic- energy that travels in waves
Examples: Visible light, radio waves, and microwaves
Forms of Energy:
6. Nuclear- energy stored in the nucleus of an atom; When atoms with large nuclei such as uranium are split apart (nuclear fission) tremendous amounts of energy is released
Example: Nuclear power plants heat water to make steam which will be used to make electrical energy
Energy Conversions When energy is converted it changes from one
form of energy into another form of energy. Most forms of energy can be converted into
another form.
Click on the picture below to find out how energy is converted
Energy Conversion Examples
1. Light bulbs convert electrical energy into electromagnetic (light) and thermal (heat) energy.
Energy Conversion Examples
2. Televisions convert electrical energy into electromagnetic (light) and mechanical (sound) energy.
Energy Conversion Examples
2. Trees convert electromagnetic energy into chemical energy through the process of photosynthesis.
Sources of Electrical Energy1. Fossil fuels
Derived from ancient organic material
Includes coal, natural gas, and petroleum
Supported by current infrastructure
Negative impacts: Non-renewable Combustion releases green
house gases such as CO2
Sources of Electrical Energy2. Nuclear
Heats water producing steam through controlled nuclear reactions
Steam turns turbines to produce electricity
Produces no atmospheric pollution
Negative impacts: produces radioactive waste Discharges warm water into
nearby rivers affecting aquatic species
Back to Electrical Energy
Sources of Electrical Energy3. Hydroelectric
Generated from falling water Turns turbines which produce
electricity Produces no pollution Negative impacts: damages
ecosystems through the damming of rivers
Back to Electrical Energy
Sources of Electrical Energy
4. Wind power Produced from windmills
(called turbines) Produce no pollution Concerns include:
Expensive start-up costs Dependent upon amount of wind Noisy May negatively impact birds
Back to Electrical Energy
Sources of Electrical Energy
5. Solar energy Comes from the sun Produces no pollution Concerns:
Expensive startup costs Dependent upon weather and seasons
Back to Electrical Energy
Sources
Content: Frank, David V., et al. Prentice Hall Physical Science.
Upper Saddle River: Pearson Education, Inc., 2002. Thinkquest.org. 2009.
http://library.thinkquest.org/6064/cgi-bin/sources.cgi
Photos, Graphics, and Animations Microsoft Powerpoint Clip Art Bollendorf, Kyle P. 2009.
About the Author
Mr. Bollendorf teaches 8th grade physical science at Fleetwood Area Middle School
K. Bollendorf 2009