Energy

• Energy can’t be created nor destroyed but can be changed from one form to another. Energy is conserved • All processes occur with an increase in entropy

Turbine —> generator —> electricity

Readily combustible, black or brownish sedimentary rock occuring in rock layers Most abundant fossil fuel

Naturally occurring, flammable liquid found in rock formations in the Earth Rock oil; originates from remains of plankton

Consists primarily of methane, emits least carbon Cleanest of all fossil fuels

Contributes to urban heat and pollution Difficult to extract Expensive process Environmental impacts

Nuclear energy: E= mc^2 Nuclear fission: splitting Nuclear fusion: combining Releases large amount of energy

Fuel generated from the sugars of the plants Yeast fermentation to produce ethanol

Plant materials and animal waste Decomposing garbage produce methane

Use of underground steam to run turbines of a power plant

Gravitational descent of river is compressed from a long run to a single location with a dam

Using photovoltaic cells to convert sunlight into electricity

Uses power of wind to propel blades of wind

extracted from moon-gravity-powered tides

possessed by a system by virtue of its motion

stored energy

flow of electrons

kinetic energy to electrical energy

Natural resource that can not be replaced immediately after consumption

Can be replenished on human timescale and will not run out

Thales Miletus

William gilbert

capacity to do work, vital resource for all life forms

Thomas Browne