Earth Science Chapter 5 Energy Resources Class Notes: Copy everything. Ch.5 Section 1 Summary • Renewable resources can be replaced within a relatively short period of time. • Nonrenewable resources may take thousands or MILLIONS of years! Ch. 5 Section 2 Summary • Petroleum is a liquid fossil fuel that is made of hydrocarbon compounds. • Natural gas is a gaseous fossil fuel that forms from the remains of swamp plants. Ch. 5 Section 2 Summary Continued • Fossil fuels are obtained by drilling oil wells, mining below Earths surface, and strip mining. • America imports half of the petroleum it uses from the Middle East, South America, Africa, Mexico, and Canada. Ch. 5 Sec. 3 Summary • For Fusion to take place, high temperatures are necessary. • Fuel cells combine hydrogen and oxygen to produce electrical energy. • Fuel cells release WATER as a byproduct. Question • What is the difference between fusion and fission? Write the answer in your notes. • Energy released by fission or fusion reactions is NUCLEAR ENERGY. Ch. 5 Section 3 Summary • Wind power is a renewable resource that doesn’t emit pollution. • Solar energy is a renewable resource that doesn’t emit pollution, but solar panels are expensive. Continued • Geothermal Energy comes from Earth, but its only available in certain areas.