Energy
The ability to do work
Energy
The stored energy an object has because of its position or state, for example a bike on top of a hill
Potential Energy
Geothermal Energy: Advantage or Disadvantage?
Reliable and relatively inexpensive
Renewable
Pollution free
Advantage
Geothermal Energy: Advantage or Disadvantage?
Start-up cost high
Requires skilled workers to install
Disadvantage
Splitting of an atomic nucleus into two smaller fragments, accompanied by the release of large amounts of energy
Fission
Energy from the sun
Solar Energy
The energy an object has due to its motion, for example a car traveling along the highway
Kinetic Energy
Wind Energy: Advantage or Disadvantage?
Cost Effective
Clean and Renewable
Creates Jobs
Advantage
Solar Energy: Pros or Cons?
-needs backup or storage system on cloudy days
-dependent on amount of sun (time, location, etc)
-solar power stations: costly to build initially
Cons
Joining of two lightweight atomic nuclei into a single, heavier nucleus, accompanied by the release of large amounts of energy
Fusion
This type of energy is created from air flows that occur naturally in the earth's atmosphere
Wind Energy
True or False?
Energy is never created or destroyed, it is only changed from one state to another.
True
Solar Energy: Pros or Cons?
-renewable and sustainable
-high energy efficiency
-moderate environmental impact, clean
-no direct emissions of CO2/other pollutants
-low costs in the long term
Pros
Wind Energy: Advantage or Disadvantage?
Noisy
Visual Pollution (people might complain about the appearance/sight of wind farms)
Pose a threat to wildlife
Disadvantage
Pros or Cons?
- less of an immediate environmental impact than fossil fuels because it does not produce smoke or carbon dioxide
- produces no air pollution
- not expensive
- extremely efficient and reliable
Pros
Energy derived from the heat in the interior of the earth
Geothermal Energy
Which letter shows the point where the ball has the most kinetic energy?
B
This diagram represents what type of power plant?
Geothermal
Solar Energy, Wind Energy and Geothermal Energy are examples of this type of energy because they do not cause pollution
Clean Energy
Pros or Cons?
- generates radioactive waste
- many steps require fossil fuels (mining and disposal)
- expensive initial investment
- uncertainty of risk
Cons
The energy stored inside an atom that is released by either splitting the atom or when two or more atoms fuse together
Nuclear Energy
Which letter shows the point where the ball has the most potential energy?
A
Solar Energy, Wind Energy and Geothermal Energy are examples of this type of energy that has been derived from earth's natural resources and can be replaced
Renewable
This device converts the wind's kinetic energy into electrical energy, groups of them located in the same location are called wind farms
Turbine
All power plants convert heat into energy using steam. The difference between nuclear power plants and all other power plants is that nuclear power plants use this to create the heat to make the steam.
Uranium