Free response · Unit 6 Beta

Energy use per person in two countries, 1990 to 2020

Q2: Analyze and interpret quantitative data · scientific calculator allowed · 10 points

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The question

Name: ______________________   Date: ____________   Energy use per person in two countries, 1990 to 2020 (10 points)

Data

Energy use per person and fuel mix, two countries

In 2020, country A got 75% of its energy from coal and oil and 10% from wind and solar; country B got 60% from oil and natural gas and 20% from wind, solar and moving water. Country A's population is 1,200 million; country B's is 50 million.
19901995200020052010201520200100200300400YearEnergy use (GJ per person per year)Country A (developing)Country B (developed)

  1. (a) Describe the trend in energy use per person in each country from 1990 to 2020. Use data from the graph. [2 points]

  2. (b) Calculate the percent change in energy use per person in country A from 1990 to 2020. Show your setup. [2 points]

  3. (c) In 2020, country B still used more energy per person than country A. Make a claim about which country used more energy in total in 2020, and justify it with a calculation. [2 points]

  4. (d) Explain one reason country A's energy use per person rose between 1990 and 2020, and one reason country B's fell after 2000. [2 points]

  5. (e) Country A expects its energy use per person to keep rising. Identify one environmental consequence if this growth is met mostly with coal, and propose a solution that would let country A meet its demand with less of that consequence. [2 points]