and the differing wavelengths make the different colors. Modern quantum theory says that particles of energy called photons make up light. The number of photons gives the brightness, and the energy in the photons creates its color. Both theories...
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What is energy? What are the different types of energy? Where does energy come from? Sample Answers Activity 1 The objects identified in this activity will vary. A toy ball rolling on the ground would have kinetic energy. A light or lamp would have light energy. Electrical devices like...
Potential energy is also the type of energy found in dry- and wet- cell batteries, nuclear reactions, and even springs.Kinetic energy is often easier to identify. It is the result of the speed (and mass) of an object. For instance, the bowling ball from the previous example can be ...
Elevation over a base level is another form of energy, which is called potential energy. A compressed spring contains elastic energy. When released, the spring vibrates, setting the molecules of the spring into relative motion. Electric energy occurs rarely in nature; it manifests itself in the...
With the development of science and technology, our life is becoming much better and more convenient. However, more garbage and pollution are produced at the same time, which lays a heavy burden on our environment. As is known to all, en...
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This process of turning heat energy into light energy is called incandescence, according to the Institute for Dynamic Educational Advancement (IDEA) website, WebExhibits.org. Incandescent light is produced when hot matter releases a portion of its thermal vibration energy as photons. At about 1,...
Inflation in consumer prices is measured and tracked so that problems in the economy can be pinpointed. If the rate of inflation is outpacing the rate of income growth, the economy is in trouble. Inflation can be negative, too; this is calleddeflation, but it is relatively rare. ...
Green tech–or green technology–is an umbrella term that describes the use of technology and science to reduce human impacts on the natural environment. Green technology encompasses a wide area of scientific research, including energy, atmospheric science, agriculture, material science, and hydrology....