Question | Answer |
Energy | ability to do work |
Potential Energy | energy has object because of position/shape |
Kinetic energy | energy of motion |
You can add PE and KE to get | mechanical energy |
KE | mv2/2 |
PE | weight x height |
Mechanical Energy | total energy of motion and position of object |
ME | potential + kinetic |
Thermal Energy | total energy of particles that make up object |
Chemical Energy | energy of compound that changes as its atoms are rearranged to form new compounds |
Electrical Energy | energy of moving electrons |
Sound Energy | caused by object’s vibrations |
Light Energy | produced by vibrations of electrically charged particles |
Nuclear Energy | energy associated with changes in nucleus of atom |
Non-renewable Resources | cannot be replaced after they are used or can be replaced only over thousands of millions of years (Ex-coal, petroleum, natural gas) |
Coal | mainly used for electric power |
Petroleum | supplies us with gasoline, kerosene, and wax as well as petrochemicals which are used to make synthetic fibers such as rayon |
Natural Gas | used in heating systems, stoves, ovens, and in vehicles as an alternative to gasoline. Natural gas is the cleanest burning fossil fuel |
Nuclear Energy | used to generate electrical energy |
Renewable resources | can be used and replaced in nature over a short period of time |
Solar Energy | sunlight can be converted into electrical energy through the solar cells which can be used in devices such as calculators or installed in a home to provide electrical energy |
Hydroelectric Energy | electrical energy produced by falling water |
Wind Energy | a wind turbine coverts kinetic energy into electrical energy by rotating a generator |
Geothermal Energy | thermal energy resulting from the heating of Earth’s crust is called geothermal energy |
Biomass | organic matter such as plants, wood, and waste that can be burned to release energy is called biomass |