Common atmospheric pollutants and their sources

EasyMedium
123456789101112
Question 6
Medium

Electricity Generation and Environmental Chemistry

This question is about energy resources and combustion.

Figure 1 shows the percentage of electricity generated in a country between 2010 and 2020 using coal and wind energy.

Bar chart showing the percentage of electricity generated from 2010 to 2020. The y-axis represents the percentage of electricity generated, ranging from 0% to 6.0% with major grid lines every 1.0% and minor grid lines every 0.1%. The x-axis represents the years 2010, 2012, 2014, 2016, 2018, and 2020. For each year, there are two bars: a light grey bar representing coal and a dark grey bar representing wind energy. The data heights are as follows: in 2010, Coal is 4.5% and Wind is 0.5%; in 2012, Coal is 4.0% and Wind is 1.2%; in 2014, Coal is 3.2% and Wind is 2.0%; in 2016, Coal is 2.5% and Wind is 3.5%; in 2018, Coal is 1.5% and Wind is 4.5%; in 2020, Coal is 1.0% and Wind is 5.5%

a.

Describe the changes in the percentage of electricity generated in this country between 2010 and 2020 using coal and wind energy. Use data from Figure 1 in your answer.

[3]
b.

Coal contains carbon, hydrogen, and some sulfur. When coal is burned, the products of combustion may be released into the atmosphere. Explain the environmental effects of releasing these products of combustion into the atmosphere.

[6]
c.

Suggest one reason why using wind energy is a more sustainable way of generating electricity than burning coal.

[1]
d.

Wind energy may not be able to replace the generation of electricity from fossil fuels completely. Suggest two reasons why.

[2]

Common atmospheric pollutants and their sources Questions

  1. GCSE
  2. /Chemistry
  3. /Common atmospheric pollutants and their sources