Chapter 11 Energy Resources

Chapter 11 – Energy Resources Fossil fuels are formed from the remains of organisms. The three major fossil fuels are coal, oil, and natural gas.

Chapter 11 – Energy Resources Formation of coal (a fossil fuel):

Chapter 11 – Energy Resources Production of oil (a fossil fuel):

Chapter 11 – Energy Resources When fuels are burned, the chemical energy that is released can be used to generate another form of energy, such as heat, light, motion, or electricity.

Chapter 11 – Energy Resources Fossil fuels are nonrenewable resources because they take so long to form. The United States uses about 33% of all oil produced in the world. The United States has only about 3% of Earth’s oil supply.

Chapter 11 – Energy Resources Renewable Sources of Energy: Energy from the sun is solar energy. Solar energy does not cause pollution. Solar energy will not run out for billions of years. Solar energy is only available when the sun is shining. Solar technology is expensive

Chapter 11 – Energy Resources Renewable Sources of Energy: A solar cell can change solar energy into electricity.

Chapter 11 – Energy Resources

Chapter 11 – Energy Resources Renewable Sources of Energy: Electricity produced by flowing water is called hydroelectric power. Hydroelectric power is the most widely used source of renewable energy.

Chapter 11 – Energy Resources

Chapter 11 – Energy Resources Renewable Sources of Energy: Wind energy is caused by solar energy. The sun heats Earth’s surface unevenly, causing different areas of the atmosphere to have different temperatures.

Chapter 11 – Energy Resources Renewable Sources of Energy: Wind is the fastest-growing energy source in the world. Wind does not cause pollution, but few places have winds that blow enough to provide the energy a place needs.

Chapter 11 – Energy Resources Renewable Sources of Energy: Fuels made from living things are called biomass fuels and include wood, leaves, food wastes, and animal wastes and are renewable. Biomass materials can be made into other fuels.

Chapter 11 – Energy Resources Renewable Sources of Energy:

Chapter 11 – Energy Resources Renewable Sources of Energy: Heat from Earth’s interior is called geothermal energy. When magma heats underground water, the heated water can be used to produce electricity.

Chapter 11 – Energy Resources Renewable Sources of Energy: Iceland and New Zealand are places where magma is close to the Earth’s surface. In Iceland, geothermal energy heats most homes.

Chapter 11 – Energy Resources

Chapter 11 – Energy Resources Renewable Sources of Energy: Hydrogen gas can be used as a renewable source of energy. Hydrogen gas burns cleanly and doesn’t produce pollution.

Chapter 11 – Energy Resources Renewable Sources of Energy: It takes more energy to make pure hydrogen (from water) than burning the hydrogen makes.

Chapter 11 – Energy Resources Nuclear energy: In a nuclear power plant, the heat released from fission (the splitting of an atom’s nucleus) reactions is used to change water into steam. The steam then turns the blades of a turbine to generate electricity.

Chapter 11 – Energy Resources Nuclear fisson:

Chapter 11 – Energy Resources Nuclear power plant:

Chapter 11 – Energy Resources Energy Conservation: Fossil fuels may one day be used up. One way to preserve our current energy resources is to increase the efficiency of our energy use.

Chapter 11 – Energy Resources Energy Conservation: Insulation is one way to increase the efficiency of heating and cooling systems. Insulation is a layer of a material that prevents the loss of heat from inside a building.

Chapter 11 – Energy Resources Energy Conservation: We can also use fluorescent light bulbs (CFL’s), which are more efficient than regular light bulbs. CFL Regular Light bulb

Chapter 11 – Energy Resources Energy Conservation: Another way to preserve our current energy resources is to conserve energy whenever possible. This means to reduce the amount of energy you use.

Chapter 11 – Energy Resources Energy Conservation: You can reduce your energy use by changing your habits. For example, you can walk or ride a bike to a store rather than riding in a car. What else can you do to conserve energy?