Lesson 7 Flashcards
is the ability or the capacity to do work.
source of power for mechanisms and organisms without it nothing will work.
Energy
Types of Energy Resources
Renewable Energy
Non-renewable Energy
means that the supply can not be replenished.
Once it runs out, it is gone forever.
Fossil Fuels are the most common form
Non-renewable Energy
Examples of Fossil Fuels
Coal
Petroleum
Natural Gas
Ancient swamps that were buried by sediments.
Used to generate electricity.
Gas
Primarily algae and plankton
Used to produce gasoline and diesel
Petroleum (Oil)
The most abundant fossil fuel in the world.
Coal
Primarily algae that sink to the bottom of the sea
Use to generate electricity
Natural Gas
produced by chemicals released by coal powerplants and automobiles.
Smog
It heats up water to turn it to steam
The rising steam turns turbines which generate electricity
Coal Power Plant
black liquid formed from the buried remains of microscopic marine organisms.
Petroleum (Oil)
First you drill down to find a deposit
Then you use a oil rig to pump it up
Oil Wells
can be heated and separated into its different components
Oil Refining
used for hauling goods.
Trucks, Ships, and Railways use Diesel
Diesel Fuel
t is primarily methane
It is used to produce 20% of our electricity
Natural Gas
Problems with Fossil Fuels
- All Fossil Fuels release Carbon Dioxide
- Burning coal and oil produces toxic pollutants
- Our Fossil Fuels will run out soon
Renewable Resources
- Wind
- Solar
- Hydroelectricity
- Biofuels
- Geothermal
- Tidal/Wave Energy
comes from wind turning turbines to generate electricity.
It can only be used in regions that have a lot of wind.
Energy from Wind/Wind energy
Must face south to get the maximal sun, if on a roof.
Some systems have the ability to rotate to follow the sun through the day
Solar cells
generate electricity from the sun.
Solar Energy
2 ways to generate electricity from the sun.
Photovoltaic cells
and
Solar thermal energy
Sunlight is focused on a fluid that boils to spin a turbine to generate electricity
Solar Thermal Systems
Sunlight can be used to save energy without even generating electricity
Passive Solar Heating
can save money by heating or lighting buildings passively.
Solar Energy
No pollution and is renewable.
Dams hold large amounts of water back.
Water flowing through forces turbines to spin and create electricity.
Hydroelectricity
Uses force of the river to push turbines
Run of the River Dam
Creates a vertical displacement and water is dropped onto the turbines
Gravity Dams
Moving water can spin turbines and generate electricity
Tidal and Wave Energy
Using crop waste, leaves, and wood products to generate fuel.
Biofuels
Using hot water from the Earth
Can only be used in certain areas with volcanic or geothermal activity
Geothermal Energy
is clean and non-polluting. Only water vapor is released.
most efficient form of electricity generation available.
It is a non-renewable resource since the uranium used as the fuel has a finite quantity.
Nuclear Power
The primary drawback of nuclear power
Nuclear Waste
