Grade level: 5th – 6th grades
Skills: Circle graph
Related environmental issues: Energy
Currently, fossil fuels (coal, oil, and natural gas) are dominant energy sources for electricity generation in the world. However, many claim that renewable energy will be the main form of energy in the future. The circle graph below shows one prediction of shares of energy sources used for electricity generation in the world in 2050.
- According to the prediction, what two sources will be the dominant energy sources in the world in 2050?
- According to the prediction, what percentages of the world’s energy will be generated from fossil fuels in 2050? Fossil fuels include coal, oil, and natural gas.
- According to the prediction, what energy source generates one-sixth as much electricity as solar energy in the world in 2050?
- According to the prediction, what energy source generates 4 times as much electricity as coal in the world in 2050?
Sources: DNV-GL, 2017, Energy Transition Outlook 2017
Answer keys
- wind and solar energy
- 3+2+6=11(%)
- Natural gas: 36÷6 =6 (%)
- Hydropower: 3 X 4 =12 (%)
This is just the start of the solar age-seven graphs show why