1. Alternative Energy
Earth and Space 1
Geothermal energy uses heat energy from under the Earth’s surface to heat buildings and also to generate – A
building materials B
solar power C
fossil fuels D
electric energy
5.7C 2
A hydroelectric power plant generates electricity by using the energy of which of the following? A
Blowing wind B
Organic material C
Moving water D
Earth’s core

2. Which alternative energy source does this information describe?
Earth and Space 3
A student is preparing a presentation about alternative energy resources. The student has found the following information:
Which alternative energy source does this information describe? A
Hydroelectricity B
Solar energy C
Biofuels D
Wind
Blades of a turbine are turned by the movement of water.
Does not release pollution into the air.
Located near rivers and large lakes. 4
Which of the following sources of energy is classified as an alternative energy source? A
Mined coal B
Geothermal heat C
Crude oil D
Natural gas

3. Fuel Used to Make Electricity Percent Efficiency (%)
Alternative Energy
Earth and Space 5
Students researched electrical power production and discovered that not all sources have the same efficiency. The data table demonstrate his findings.
Based on the data collected, which source of alternative energy is most efficient? A
Coal B
Wind C
Natural gas D
Solar
Fuel Used to Make Electricity
Percent Efficiency (%)
Type of Energy Resource
Coal 42
Fossil Fuel
Wind 36
Alternative
Natural Gas 38
Solar 17