F08 exam 2 help - 10 20 30 40 50 60 0-7 7-15 15-22 22-30...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 10 20 30 40 50 60 0-7 7-15 15-22 22-30 30-37 37-45 45-52 52-60 60-67 67-75 frequency CEE 2300, F08, exam 2 page 1 of 3 name: SOLUTION Closed book/notes; 50 minutes; 75 points. 1. (25 pts) Short answer. Put answers in spaces provided. a) Approximately how much air does an adult inhale per day? ~ 15 m 3 (5-30 m 3 ) (1) Approximately how much water does an adult ingest per day? ~ 2 L (1-8 L) (1) Give a limitation in assessing human health risk using results from each of the following. animal studies: extrapolation across species and to low dose epidemiologic studies: statistical not causal; confounding issues (2) What are the two leading causes of death in the U.S.? (1) heart attack (2) cancer (2) b) Biomass fuels have a similar carbon intensity (gC/MJ) as coal. So why is their use proposed as a means to reduce global warming? consumes CO2 when grown (1) On an energy basis, is natural gas, oil, coal or uranium most abundant? uranium (1) On an energy basis, is natural gas, oil, coal or uranium most used? oil (1) Energy intensity (MJ/GDP) in the U.S. and Canada is higher than in many European countries with similar standard of living. Give two reasons why this might be so. (1) low population density greater need to transport goods (2) less efficient; more wasteful e.g. large cars, excessive heating & cooling (2) True or false. Since the 1970s, U.S. per capita energy consumption has been steady. true (1) c) At what rate is the atmospheric CO 2 concentration increasing? ~ 2 ppm/yr (0.5-4 ppm/yr) (1) List three strategies for stabilizing or reducing CO 2 levels in the atmosphere....
View Full Document

This note was uploaded on 10/05/2011 for the course CEE 2300 taught by Professor Spain during the Spring '08 term at Georgia Institute of Technology.

Page1 / 4

F08 exam 2 help - 10 20 30 40 50 60 0-7 7-15 15-22 22-30...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online