Science Quick Quiz
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25 terms
Terms | Definitions |
|---|---|
 Alessandro Volta | Discovered first electric cell and later created the battery |
| Michael Faraday | Discovered that a electric current could be produced by passing a magnet through a copper wire |
| A generator | Converts motion into electricity |
| Thomas Edison | Invented a practical lightbulb |
| He designed and built the first power plant that was able to produce electricity (it was D.C) | What did Edison do in 1882 to help his first invention |
| 39% | What percent of the energy in the U.S. is used to make electricity |
| 10% | How efficent are incandescent lightbulbs |
| reduce up to 70% | How much could we reduce our electricity if the country converted to new tecnologies |
| 4 times efficent as incandescent bulbs and last up to 10 times longer | What are the 2 main advantages of CFL's |
| They produce very little heat | Why are CFL's especially good to use in the summer |
| They are expensive | What is the disadvantage of CFL's |
| Compostion of matter | Made of tiny atoms and the differences depends on the kind of atoms, number of atoms and the way that the atoms are arranged |
| Element | Substances made of only one type of atom |
| Protons, neutrons and electrons | Atoms are made up of __________ |
| Compound | When two elements are combine chemically to form a substance with different properties from the original elements |
| Atom | The smallest part of an element that still has the properties of the element is a __________ |
| molecule | The smallest part if a compound that still has the properties of the compound is a __________ |
| bubbling, temperature change, color change and precipitate | Indications of a chemical reaction is... |
| The composition of matter determines its properties of characteristics | Why is matter so important |
| Oxygen | What does O stand for |
| Nitrogen | What does N stand for |
| Potassium | What does K stand for |
| matter | anything that has mass and takes up space(volume) |
| mass | the amount of matter |
| Conservation of matter | The law of conservation of mass/matter; matter cannot be crated or destroyed but may be rearranged |
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