1. Alternate Energy Sources

2. Starter
1. Which of the following natural resources is correctly paired with its extraction method?
natural gas → hydrofracking
peat → surface mining
coal → harvesting
wood → drilling
2. Which is a farming technique that could improve the soil and the environment?
using fueled machines that will turn the soil continuously
creating undisturbed layers of mulch in the soil
placing inorganic chemical fertilizers in the soil
irrigating the soil with salty water

3. Alternative Energy
Scientists have developed energy resources that are an alternate to fossil fuels. Reduce gas emissions but are NOT sustainable
Solar Energy
Wind Energy
Hydroelectric Energy
Geothermal Energy
Nuclear Energy
Biofuels

4. Solar Energy
Solar Energy uses photovoltaic (PV) panels to convert sunlight into electricity
Used in mountainous areas, open areas like deserts
North Carolina Solar House at NC State
House is run entirely off of solar energy

6. Solar Energy Advantages Produces no pollution Very quiet
Disadvantages:
Initial cost of solar panels is expensive
Only work during daylight hours.

7. Nuclear Energy
In nuclear fission, uranium/plutonium nuclei split into smaller nuclei and emit neutrons and heat energy
North Carolina State Nuclear Plant

8. North Carolina State University Nuclear Plant

9. Nuclear Energy Advantages: Create very small amounts of pollution
Very reliable
Disadvantages:
Radioactive waste (must be monitored for 10,000 years after it is used
Threat of nuclear terrorism/Meltdown

10. Wind Energy Using the energy of wind to power a turbine Advantages
Done in coastal areas
Advantages
Self-sustaining
Does not impact ecosystems
Disadvantages:
Not 100% reliable
High initial cost
Takes up a large amount of land

11. Modern Vertical Wind Turbine

12. Wind in North Carolina

13. Hydroelectric Power
Hydroelectric power is the power generated by falling water.
Water flows through a dam and turns a turbine
Advantages:
No fossil fuels
Very few breakdowns
Disadvantages:
Disrupts natural ecosystems
Expensive to build

14. Geothermal Energy Geothermal Energy takes heat from Earth’s interior
Heat within the Earth raises the temperature of groundwater
Water is converted to steam
Can only be done near plate boundaries

17. Biofuels
Biofuels are energy resources that come from living organisms.
Bioethanol
Biodiesel
Biomass – Material left over from a once living plant or animal

18. Biofuels Advantages: Less expensive than gasoline
Carbon Emissions are less than gasoline
Are more quickly renewed than gasoline
Disadvantages:
Have lower energy output