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Chapter 4 Earth’s Resources.

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Presentation on theme: "Chapter 4 Earth’s Resources."— Presentation transcript:

1 Chapter 4 Earth’s Resources

2 Conservation of Energy
Create a Brochure promoting the Conservation of Energy In your Brochure you must persuade humans to protect/conserve Earth’s resources Your Brochure must include color, pictures, and loads of facts You will have 3 days to complete the brochure You may include pictures (small) from magazines or the internet You will be graded on content of course and creativity

3 4.3 Water, Air, and Land Resources
The Water Planet What 3 things are essential for life? _________________ How do we use fresh water? ___________ _____________ ____________

4 4.3 Water, Air, and Land Resources
What percentage of Earth’s surface is water? _____% Of that, what is Salt water? ____% Fresh water? Of the fresh water, what is useable? <____%

5 4.3 Water, Air, and Land Resources
Freshwater Pollution Point source pollution-_____________________ Ex – factory pipes Nonpoint source pollution-_________________ Ex – waste oil from street, sediments from construction sites, pesticides from farm land and lawns, water filtering from coal mines Runoff-_________________________________ How is Runoff related to Nonpoint source pollution?___________________________________

6 Major Types of Water Pollution

7 Major Types of Water Pollution

8 4.3 Water, Air, and Land Resources
Earth’s Blanket of Air The chemical composition of the atmosphere helps maintain life on Earth. ________________________________________ Pollution in the Air The increase in CO₂ in the atmosphere has altered the carbon cycle and contributed to global warming- __________________________________________________ The burning of fossil fuels releases sulfur dioxide and nitrogen oxide into the atmosphere. These compounds combine with water vapor to create ___________________________. Chlorofluorocarbons (CFCs) once used in air conditioners and foam production destroy ______________________________.

9 Major Primary Pollutants and Their Sources
What makes up almost half of all air pollution? What fraction of pollution sources are industrial processes? What do you think is the source of most carbon monoxide pollution?

10 4.3 Water, Air, and Land Resources
Earth’s land provides soil and forests, as well as mineral and energy resources Soil-________, Forest-_________, Petroleum-_________, Minerals-_______ Damage to Land Resources Mines produce many mineral resources, but mines are destroying______,_________, and _______________. Mines also cause soil erosion and pollution that contaminates soil and water and destroys ______________.

11 4.4 Protecting Resources Conservation
______________________ Pollution prevention means stopping pollution from entering the environment Late 1940s and 1970s, pollution got public’s attention Air pollution- killed 100s, sickened 1000s in US & elsewhere Water pollution-oil spills Americans use about ______ of the world’s resources and produce about _______ of the garbage

12 4.4 Protecting Resources Keeping Water Clean and Safe
Starting in the 1970’s, the federal government passed several laws to prevent or decrease pollution and protect resources In 1972, the Clean Water Act (CWA) required _____________ ____________________________________________________ The Safe Drinking Water Act of 1974 helped ______________ ____________________________________________________ Led to an increased number of sewage treatment plants which decreased the discharge of raw sewage into lakes, rivers, and bays

13 4.4 Protecting Resources Protecting the Air
In the 1970’s, Congress passed the Clean Air Act, the nation’s most important air pollution law National Ambient Air Quality Standards (NAAQS) established for six “criteria” pollutants known to cause health problems – carbon _________, ozone, lead, sulfur _________, nitrogen oxides and particulates (fine particles).

14 4.4 Protecting Resources Caring for Land Resources
Protecting land resources involves preventing pollution and managing land resources wisely Compost ___________________________________________________ Recycling

15 4.4 Protecting Resources Since 1977, sanitary landfills have largely replaced open dumps ________________________________________________________________________________________________ The Resource Conservation and Recovery Act (RCRA) of 1976 has decreased illegal and unsafe dumping of _______________________________ The 1980 Comprehensive Environmental Response, Compensation, and Liability Act mandates the cleaning up of abandoned hazardous waste sites that are ______________________________________

16 Conservation of Energy
Complete Brochure

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