Energy Test Review - Benchmark March 28
Energy is the ability to do work. Energy can be divided into two main states: kinetic (energy in motion) and potential (energy that is waiting or stored). These two states of energy can be divided into several forms of energy: Mechanical, Radiant, Sound, Chemical, Heat/Thermal, Electrical and Nuclear (MRS CHEN).
Energy can’t be destroyed or created, simply transformed from one form to another. We harness this transforming ability to power our homes with electricity. We can use different energy resources to generate electricity (generally by creating steam, which turns the turbine, which turns the generator). Energy resources may be renewable or nonrenewable.
Think about and be able to answer the following AT MINIMUM:
1. Where does a roller-coaster have the most potential energy (remember this is the same as the least kinetic)? Kinetic energy is based on mass [more mass = more KE]
2. List advantages and disadvantages of hydroelectric dams, geothermal, windmills, solar, nuclear, fossil fuels
3. Be able to describe energy transformations in: a) hand-held devices such as radios or flashlight or b) electrical devices like video games c) photosynthesis and d) glow sticks
EX: Flashlight – chem (battery) à electrical (wires) à light
4. Be able to give examples and define all 3 forms of heat transfer:
Heat travels in all directions but moves from warm to cool
a. Convection
b. Conduction
c. Radiation
5. Be able to describe key parts of an energy plan for home and school like the 3 Rs: reduce, reuse, recycle OR turn off lights and appliances at home to save energy use
6. Give examples of different energy resources:
a. geothermal energy: Geyser b. nuclear energy: power plant or the sun
