Sources of Energy Glencoe Chapter 16 Pages 484-515.

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Presentation transcript:

Sources of Energy Glencoe Chapter 16 Pages

Sources of Energy - According to the Law of Conservation of energy: “Energy cannot be created or destroyed, but may only change form.” - So how do we convert (change) energy from one form to another, so we can use it and where does it come from?

Sources of Energy We use energy for basic life functions and to help improve our daily lives.

How We Use Energy

Categories of Energy Resources - Energy is a natural resource that humans can use for everyday activities. - There are two basic categories of energy resources. 1. Non-renewable energy resource – an energy source that cannot be replaced by natural processes as quickly as it is used. 2. Renewable energy resource – an energy source that is replaced nearly as quickly as it is used.

Non-Renewable Resources of Energy 1. Fossil Fuels – formed from decaying remains of dead plants and animals (hydrocarbons) - Burned to release energy from chemical energy to heat and light 2. Nuclear Energy – energy found in an atomic nucleus

Fossil Fuels A. Petroleum (oil) – liquid fossil fuel - Can be separated into different types of hydrocarbon compounds -Used in plastics, -Synthetic fabrics -Oils -Fuels

Fossil Fuels B. Natural gas – gaseous fossil fuel - Most cleanly burned fossil fuel (least pollution released when burned)

Fossil Fuels C. Coal – solid fossil fuel - Least cleanly burned fossil fuel (most pollution released when burned)

Fossil Fuels  Burning fossil fuels adds carbon monoxide and other undesired compounds into the air.

Nuclear Energy A.Nuclear fission (splitting of atomic nucleus to release energy) of Uranium-235 produces heat which is captured to produce steam in a nuclear power plant.

Nuclear Power Plant

Nuclear Energy

Nuclear Reactor Core

Nuclear Fuel Rods

Storage Pool for Fuel Rods

How Nuclear Plant Works

Nuclear Energy  Nuclear waste is radioactive and harmful to living creatures - Low-level waste – dangerous for a short time and in small amounts - High-level waste – dangerous for 1000’s of years

Nuclear Energy B. Nuclear Fusion – atomic nuclei are combined to form a larger new nucleus and releases energy during formation  This process occurs in stars at very high temperatures