Next Review Session is: Wednesday 5/24 @ 3:15 PM Date: May 19th, 2017- period 5 Aim # 80: How can technology be used to help the environment? HW: Castle Learning (QUIZ #3) due next MONDAY Human Impact Test next Wednesday Ecology Test Corrections due next Thursday RRB pages 25-30 due next Friday Do Now: Have your RRB open to page 9 for homework credit! Next Review Session is: Wednesday 5/24 @ 3:15 PM

Next Review Session is: Tuesday 5/23 @ 3:15 PM Date: May 19th, 2017- period 1 Aim # 80: How can technology help the environment? HW: Castle Learning (QUIZ #3) due MONDAY Human Impact Test next Wednesday Ecology Test corrections due next Thursday RRB pages 25-30 due next Friday Do Now:Have your RRB open to page 9 for homework credit! Next Review Session is: Tuesday 5/23 @ 3:15 PM

Aim #80: How can technology be used to help the environment?

1a) Alternative Energy Sources: Hydroelectricity – dammed water is sent through a turbine & generates electricity. Advantages: Little or no air pollution Does not depend on fossil fuels Disadvantages: Disruptive to surrounding aquatic ecosystems.

1b) Alternative Energy Sources: Wind Power – wind spins turbine blades to produce electricity. Advantages: Little or no pollution Does not require the consumption of water to operate. Disadvantages: The intermittency of wind Need a lot of turbines to generate as much energy of one fossil fuel power plant.

1c) Alternative Energy Sources: Solar Energy – the use of the sun’s energy to generate electricity. Advantages: Relatively pollution free. Technology is becoming more affordable. Disadvantages: Not available at night & reduced during cloud cover. Photoelectric Cell

1d) Alternative Energy Sources: Nuclear Energy – energy produced from the splitting of atoms. Advantages: Water vapor is the only emission. 2) Low fuel costs (uranium) Disadvantages: Waste is radioactive & must be properly contained for thousands of years. 2) High maintenance costs.

2) Energy Conservation: We need to conserve energy by reducing our usage of everyday products we have come to rely on. Ex: Turn off lights when not in use, Carpooling, Use fan instead of air conditioner, etc…

3) Individual Choices & Societal Actions: Solutions to these environmental problems require an analysis of costs & benefits. Example: You can only drive your car to work. Benefits: 1) Less pollution 2) Conserve natural resources 3) People may exercise more Costs: Inconvenience Loss of jobs in oil industry Lose contact with friends We must determine which trade-off (compromise) is acceptable.