GRAND CHALLENGE

TERMS

• Benefit: an advantage or profit gained from something
• Costs: an amount that has to be paid or spent to buy or obtain something
• Environmental Impact: a strong effect on the nature, or weather
• Alternative: available as another possibility

4 ALTERNATIVE SOURCES

• Wind
• Solar
• Hydroelectricity
• Geothermal

WIND ENERGY

• Wind energy is energy provided from turbines or windmills.
• When the wind is going at a very fast pace or speed it
• spins the turbines and gives off energy/power. A windmill
• does the same thing as a wind turbine except it is also
• powered by water.

GEOTHERMAL ENERGY

• Geothermal energy is thermal energy
• generated and store inside of the Earth.

SOLAR ENERGY

• Solar energy is solar panels placed outside to collect
• and store energy from the sun to power electricity
• such as homes, businesses and cars.

HYDROELECTRICITY

• Hydroelectricity is energy provided from a body
• of water. This occurs when a body of water is stored in one place
• and spins turbines to give off power/electricity to a community
• of people.

COSTS

• Solar: Use of hazardous material
• Hydeoelectric: Habitat loss

BENEFITS

• Wind: Affordable
• Geothermal: Easy to create by water