Chapter 5 Community and Environmental Responsibilities.
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Transcript of Chapter 5 Community and Environmental Responsibilities.
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Chapter 5Community and Environmental
Responsibilities
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Section 5-1
Citizenship
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Objectives
• Explain the importance of being an informed citizen and exercising your right to vote.
• Describe the purpose of taxes.• Consider why community involvement
is important to individuals, especially teens.
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To Be Informed
• As a citizen, you have rights and responsibilities
continued© AISPIX/Shutterstock
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To Be Informed
• You have the responsibility – to be informed– to vote– to obey the law– to pay taxes– to be involved in your community
continued
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To Be Informed
• Your right: To receive information about the world around you
• Your responsibility: To use the information to be an informed citizen
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To Vote
• Your right: To help choose your government leaders
• Your responsibility: To become informed on the issues and the candidates’ views
• If you are at least 18 years old and a U.S. citizen, you may register to vote
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Did You Know?
• In the 2008 U.S. election, – 206 million people
were eligible to vote
– 146 million people registered to vote
– 131 million people voted
U.S. Citizens Eligible to Vote in 2008
ElectionVotedDid not vote
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To Obey the Law
• Life would be chaos without laws• Your right: To enjoy the benefits that
laws provide• Your responsibility: To obey laws that
govern your behavior
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To Pay Taxes
• Federal, state, and local governments collect taxes
• Your right: To benefit from the services provided by tax dollars
• Your responsibility: To pay taxes
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Think Further
What are the tax dollars collected by the government used for?
© JohnKwan/Shutterstock
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To Be Involved in Your Community
• Volunteers provide their time, talents, and energy free of charge
• Your right: To benefit from public services and nonprofit agencies
• Your responsibility: To become involved in the community by volunteering
continued
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To Be Involved in Your Community
• Benefits of volunteering include– learning more about your community– feeling good about making a
contribution– perfecting skills and learning new ones– determining career interests– gaining experience and making job
contacts
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To Protect the Environment
• Your right: To live in a clean, healthy environment
• Your responsibility: To help keep your environment clean and healthy
© Yuri Arcurs/Shutterstock
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Section 5-1 Review• Why do you need to be informed
about factors that impact the economy?they can limit your ability to find a job
and purchase goods and services• True or false. Voting is a right enjoyed
by citizens in every country.false—people in many nations do not
have the right to vote
continued
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Section 5-1 Review• List goods and services you use
everyday that are funded by tax dollars.Answers will vary.
• You are a citizen of a city, state, nation, and _____.world
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Section 5-2
Caring for the Environment
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Objectives
• Explain the importance of a healthful environment.
• Identify the causes of different types of pollution.
• Relate how pollution affects people’s health.
• Discuss ways people can protect and build a healthful environment.
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A Healthful Environment
• A healthful environment – promotes good physical and mental health– enables people to reach their goals
continued
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A Healthful Environment
• Healthful environment characteristics – clean air– unpolluted water– rich soil– a continuing supply of natural resources– surroundings that provide privacy and
recreation and support plants and animals
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Factors Affecting the Environment
• Two factors that play a role in the increase in environmental problems are– rapid
population growth
– shrinking natural resources
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Rapid Population Growth
• As the human population increases,– available living space for each person
decreases– existing resources must be divided
among more people– more waste is created
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Shrinking Natural Resources
• Renewable resources are replaced rapidly enough to provide a continuing supply – plants– animals– energy from the sun and wind– water
continued
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Shrinking Natural Resources
• Nonrenewable resources are replaced very slowly and the supply is limited– fossil fuels, or oil, coal, and natural
gas– minerals such as copper and gold
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Pollution
• Pollution, caused by pollutants, is all the harmful changes in the environment caused by human activities
© Huguette Roe/Shutterstock
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Air Pollution
• Pollutants can build up over time in the air
• Air pollution is linked to respiratory ailments
• The burning of fossil fuels creates airborne pollutants
continued
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Air Pollution
• Chemical pollutants weaken the ozone layer which allows more solar radiation to reach the earth
• Electrical power plant and motor vehicle emissions can create acid rain, which can damage the environment, buildings, and other structures
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Water Pollution
• Water pollution is the accidental or careless addition of waste materials to– rivers – lakes – oceans – underground water supplies
continued
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Water Pollution
• Industrial wastes, sewage, and agricultural chemicals are the main causes of water pollution
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Noise Pollution
• Noise pollution is the excessive level of noise to which people are subject
• Noise pollution can lead to hearing loss
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Hazardous Waste
• Hazardous waste may– ignite– corrode– chemically react with
another material
continued© Rechitan Sorin/Shutterstock
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Hazardous Waste
• Toxic waste can cause injury if – inhaled– swallowed – absorbed through the skin
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How You Can Help
• Individuals play an important role in preserving and protecting the environment
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Conserve Resources
• To conserve resources, recycle – aluminum cans– glass and plastic bottles– paper– furniture– appliances– clothing
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Reduce Pollution
• To reduce air pollution,– walk, ride a bike, or
take public transportation, instead of driving
– combine errands or carpool
continued
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Reduce Pollution
• To reduce water pollution,– avoid dumping waste on the ground or
into bodies of water– choose nontoxic cleaning agents and
biodegradable detergents
continued
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Reduce Pollution
• To reduce noise pollution– insulate your home from noise pollution– protect your hearing by wearing ear
protectors
continued
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Reduce Pollution
• Reduce, reuse, recycle• Insist that your
community use safe practices
• Join community groups
• Write your legislators© Sorin Alb/Shutterstock
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Make Responsible Decisions
• Fully evaluate your choices to the best of your ability
• Seek out environmental information from reputable sources, such as the U.S. Environmental Protection Agency
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Did You Know?
• In 2009, Americans discarded 2.37 million tons of e-waste, including TVs, computers, and cell phones.
Source: U.S. Environmental Protection Agency
© rezachka/Shutterstock
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Section 5-2 Review• What is the source of fossil fuels?
decayed plants and animals that lived
long ago
• Give examples of toxic waste.Answers will vary, but may include
used motor oil, antifreeze, certain batteries, empty pesticide containers, solvents
continued
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Section 5-2 Review• List two ways you can minimize
product- packaging waste.(List two:) choose products with
minimal or no packaging, reuse empty containers, use rechargeable batteries, recycle
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Section 5-3
Conserving Energy
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Objectives
• Identify renewable and nonrenewable energy sources.
• Discuss ways you can help conserve energy at home.
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Nonrenewable Energy Sources
• Caring for the environment involves using energy wisely
• Energy is something that gives a machine the power to perform an action
• Light, heat, and electrical are types of energy
continued
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Nonrenewable Energy Sources
• People supplement their own physical energy with energy from other sources
• Two major sources of energy– nonrenewable
(limited supply)– renewable
continued© Suzanne Tucker/Shutterstock
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Nonrenewable Energy Sources
• Once a nonrenewable energy source is depleted, no further supplies are available
• They include– fossil fuels– crude oil– natural gas– coal– uranium ore
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Renewable Energy Sources
• Sources of energy that can be replaced are called renewable energy sources
• They include– water– wind– solar– biomass– geothermal
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Water
• The energy of falling water can be converted into electrical energy called hydroelectric energy
continued
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Water
• Through the cycle of water evaporation and rain, the supply of water is replaced
• Most power-generating sites in the U.S. have already been developed
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Wind Energy
• Wind turbines can convert the energy of the wind into electrical energy
continued
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Wind Energy
• Wind energy is the fastest growing energy technology and does not harm the environment
• Good sites are abundant, but are often located far from where energy is needed
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Solar Energy
• Solar energy from the sun is the greatest renewable source of energy
continued
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Solar Energy
• The sun’s energy can be captured and used in several ways
• The supply of solar energy is almost limitless and generating it does not harm the environment
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Biomass
• Energy is stored in dry, decayed plant and animal matter called biomass
continued
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Biomass
• When burned, biomass produces heat and steam that can be converted to electricity
• Wood, crops, and solid waste are types of biomass often burned to create energy
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Geothermal Energy
• Geothermal energy is derived from heat produced within the earth
continued
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Geothermal Energy
• Heat is collected as steam to generate electricity
• It is available in certain locations, especially areas in the western U.S.
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Energy in the Future
• Delivering energy may become a problem because of dependence on fossil fuels
• Renewable energy sources make up a small percentage of U.S. energy supplies
• Greater investment in research and development is needed
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You Can Help Conserve Energy
• An important goal for everyone is to reduce the use of fossil fuels– Use energy-efficient appliances– Learn how to live with and use
appliances efficiently• Using less energy lowers utility bills
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Heating and Cooling a Home
• More than half of the energy used by a household is for heating and cooling
continued
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Heating and Cooling a Home
• To conserve energy – use a programmable thermostat– wear layered garments – seal air leaks– use appropriate window coverings– add insulation, if needed
continued
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Heating and Cooling a Home
• To conserve energy – use storm windows or replace single-
pane windows with double-pane windows
– use trees, shrubs, and vines to help shield a home from the elements
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Water Heating
• The water heater uses about 15 percent of a home’s energy budget
continued
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Water Heating
• Reduce hot water usage by– using cold water when possible– taking quick showers and using
aerating showerheads– running appliances with full loads only– lowering the water heater temperature– insulating the hot water storage tank
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Think Further
What steps can you take to lower energy use in your home?
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Lighting and Appliances
• About 28 percent of the home’s energy budget is used by– lighting– appliances– TVs and other power-using equipment
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Lighting
• Use energy-efficient lightbulbs like compact-fluorescent bulbs which last 4 to 10 times longer than traditional bulbs
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Lighting
• Use the lightbulb that gives adequate light with the lowest wattage– Wattage indicates the amount of
energy required to operate a bulb– Lumens indicate the amount of light
produced by a given source
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Refrigerated Food Storage
• To save energy – open and close doors quickly– cover food storage containers before
storage– keep refrigerator temperatures
between 37°F and 40°F
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Other Kitchen and Laundry Appliances
• Dishwasher– When loading, scrape off rather than
rinse off food scraps and use the air-drying feature
• Range– Match pan size to the heating element,
use covers, and use the oven to cook several dishes at the same time
continued
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Other Kitchen and Laundry Appliances
• Clothes washer and dryer– Adjust water level
to load size– Dry heavier items
separately– Avoid overdrying
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Home Electronics and Office Equipment
• They use energy when they are turned off
• When not in use, unplug products or plug them into a power strip that is switched off
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Shopping for Energy Efficiency
• When shopping for new products, consider– purchase price– operating cost
• EnergyGuide labels help you compare operating costs of major appliances
• Energy Star labels identify the most energy-efficient products
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Section 5-3 Review• True or false. Fossil fuels are a type of
renewable energy.false—they are a type of
nonrenewable energy
• Why is burning coal, which is abundant, to create energy a problem? by-products of burning coal can add
to air pollution continued
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Section 5-3 Review• More than half of the energy used in
a household is used for _____ and _____.heating, cooling
• What does the wattage of a lightbulb indicate?the amount of energy required to
operate the bulb