: Turning off lights, using mass transit (buses/trains), carpooling, and biking/walking. Study Resources
: These exist in limited quantities and cannot be replaced once used (except over millions of years). : Oil, natural gas, coal, and uranium. Fossil Fuels section 15.3 energy resources answer key pdf
: These exist in limited quantities and take millions of years to replace. : Turning off lights, using mass transit (buses/trains),
While not a fossil fuel, it is nonrenewable. It provides massive amounts of energy without air pollution, but disposal of radioactive waste is a major hurdle. 2. Renewable Energy Resources Fossil Fuels : These exist in limited quantities
Gravitational potential energy (of water) →right arrow Kinetic energy (of moving water) →right arrow Electrical energy. 5. What are two ways energy resources can be conserved?
: Conservation is achieved by reducing energy needs (e.g., turning off lights) and increasing the efficiency of energy use (e.g., using fuel-efficient cars). Quick Review Table Resource Type Key Characteristic Nonrenewable Coal, Oil, Natural Gas, Uranium Limited supply; high pollution Renewable Wind, Solar, Hydroelectric, Geothermal Replenished quickly; lower pollution Common Worksheet Questions
A5: Flowing water turns a turbine connected to a generator. The kinetic energy of moving water is converted into mechanical energy, then into electrical energy.