BEFORE THE BELL: Get out your workbook, find pg. 11…I’m going through info fast today because I want to do an activity at the end of the class period!. Environmental Health.
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Without air, water, and land, life on earth would not be possible. Yet people have been polluting the very things that keep us alive.
Pollution is a broad term that covers any dirty or harmful substance in the environment. It affects all living and nonliving things in the environment.
-Burning fossil fuels.
-Chemicals, including pesticides.
-Natural sources: forest and grass fires
Effects of Air Pollution
Air pollution can have many damaging consequences for the environment.
-Destruction of the ozone layer
-Global warming due to
intensification of the greenhouse effect.
All forms of life on earth depend on water. The earth’s water is polluted by various kinds of wastes, chemicals, and other substances.
-One form of pollution is sewage-
garbage, detergents, and other
household wastes washed down drains.
-Harmful industrial chemicals are another cause of water pollution. Some enter
the water from factories.
-In agricultural regions, pesticides and fertilizers can wash off the land and
Land pollution results from littering and the careless disposal of household and industrial garbage. Land pollution impacts the soil, water, and air. This type of pollution includes solid waste and hazardous wastes.
Most solid waste produced by households and businesses goes to landfills- huge pits where wastes are dumped and buried.
-One alternative to burying trash is to burn it in special furnaces called incinerators. The energy that incinerators produce can be used for electricity. This cuts down on the burning of fossil fuels.
-Many people believe that recycling and reusing materials is a better way to deal with solid wastes.
When hazardous wastes enter and pollute the soil, water, or air, they can cause injury, illness, or even death. All hazardous wastes need special handling.
-Two materials that were once widely used but that are now recognized as hazardous are asbestos and lead.
-Familiar products that contain hazardous materials include batteries, bleach, insecticides, motor oil, antifreeze, and certain cleaning fluids.
The best way for individuals to make a difference is to practice the three Rs:
-Reduce your consumption
of energy and other resources.
-Reuse items by repairing them,
selling them, or donating them.
The Environmental Protection Agency (EPA) is the agency of the U.S. Government that is committed to protecting the environment.
Anything people do that uses energy produced by burning fossil fuels contributes to air pollution. You can help keep the air cleaner by applying these strategies:
-Walk or bike.
-Use public transportation or
-Avoid burning trash,
leaves, and brush.
To keep water clean, use detergents that are biodegradable- broken down easily in the environment.
Many natural materials are nonrenewable resources- substances that cannot be replaced once they are used.
Conservation is the saving of resources. The best way to conserve a resource is to use less of it.
Recycling involves changing an item in some way so that it can be used again. Recycling conserves energy and natural resources and helps reduce solid waste.
The most commonly collected materials for recycling are:
In addition to recycling, you can reduce your consumption of resources by precycling. Here are some basic guidelines for precycling:
-Buy products in packages made of materials that can be reused or recycled, such as glass, metal, and paper.
-Look for products in refillable containers.
-Bring a cloth or reusable plastic bag to the store to carry your purchases.
Complete Enviro Project tomorrow.
Choose one of the following to solve:
Trash…where do we put it?
Turn trash into another product.
Turn trash into energy.
Ticket out the door:
Brainstorm list of at least 3 ideas
Write your names on your paper. (Groups no larger than 3.)
WORK DAY: Tuesday 9/3
Team of 2
Develop a plan for 1 of the following issues:
on Twinkies instead of oil?)
(Should we ship our trash to space?)
source (Should we use banana peels to power the lights in our house? Should we use milk jugs to make shoes?)
Ticket out the door:
Get a rubric from me.
Write your names on your rubric.
List at least 4 brainstorming ideas you have on the back.
You can help others understand the importance of becoming involved in protecting the environment. Here are some suggestions:
-Take charge of your family’s recycling
-Advocate for greater environmental
-Join a conservation organization.
The heating of earth by gases in our atmosphere trapping heat is similar to how a greenhouse warms.