ENV221H1 Lecture Notes - Energy Star, Energy Security, Smog

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pucecod518

28 May 2012

School

UTSG

Department

School of Environment

Course

ENV221H1

Professor

Karen Ing

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Document Summary

Direct link betwn economic growth and availability of inexpensive energy. Converting energy into useful products can lead ot waste. Ex: how 1/3 of coal into electricity and the subsequent losses in transmission of electricity to consumers. Produced by processing primary energy; such as electricity produced from coal and gasoiline from crude oil=identifies 4 products that are high efficieny performers in their category. Greenhouse gases, smog pollutants, ecosystem transformation (ex: mining, industrialization) Reliability- able to access energy they require, when they require it. Resilience-ability of system to cope with shocks and changes like strikes. Rising energy demand, rising prices, new opportunities; supply/demand. We change it from one form of energy into another. Energy changes form but the total amount of energy in the universe stays the same. Non renewable: resources that r consumed at a greater rate that can be replenished and often also finite; ex: fossil fuels, nuclear.

Related Questions

11. As energy flows through the food web in an ecosystem, the amount of energy that is transferred from one trophic level to the next trophic level increases. stays the same. decreases. may increase or decrease, depending upon the system.

12. Autotrophs are organisms that obtain energy by breaking down tissues of organisms that have died. harness external energy sources to produce complex chemical compounds. depend directly on primary producers for their energy and nutrients. eat other autotrophs to obtain energy.

13. Which of the following gives the correct order for energy flow through an ecosystem? primary producers â secondary producers â tertiary producers primary consumers â primary producers â secondary producers secondary consumers â primary consumers â primary producers primary producers â primary consumers â secondary consumers

14. Which one of the following aspects of plant biology is not directly involved in maintaining an adequate supply of water for the entire plant? phloem roots xylem transpiration pull

15. Which structure(s) do most plants use to acquire the energy that they need for cellular processes? the roots the leaves the stem

Suppose that a coal-fired power plant converts energy from coal into electrical energy with 36 percent efficiency. How many kilojoules of energy from coal are needed to produce 1.0 jk of electrical energy?

Harnessing the sun's energy to produce heat or electricity is _____.

A. non-polluting.

B.inexpensive.

C. possible only in coastal areas.

D. a major source of air pollution.

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ENV221H1 Lecture Notes - Energy Star, Energy Security, Smog

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