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tools and measure
science 1-4
| Term | Definition |
|---|---|
| technology | the practical use of scientific information: the use of tools, machines, materials and processes to meet human needs |
| compound light microscope | an instrument that magnifies small objects so that they can be seen easily by two or more lenses; items are placed on the stage so light passes through them |
| electron microscope | microscopes that focus a beam of electrons to magnify objects; TEM and SEM |
| area | the measure of the size of a surface; A=lxw and the answer is always written in square units |
| volume | the measure of the size of a 3 dimensional space; v=l x w x h and is written in units cubed |
| mass | the measure of the amount of matter in an object |
| temperature | a measure of how hot or cold something is |
| International System of Units, SI, Systems International d'unites (French) | The metric system;used by all scientists and almost every country in the world. Advantages:helps scientists share and compare their observations & results units are based on the number 10 which makes conversions from one unit to another easier |
| meter | the basic unit in the metric system for measuring length |
| liter | the basic unit in the metric system for measuring the volume of liquids |
| gram | the basic unit in the metric system for measuring the amount of matter in an object |
| length | a measure of height or width |
| tools that some life scientist use | microscope , thermometer , measurement |
| electron microscope | tiny particles called electrons are used to produce, the images are clearer and more detailed than those made by the compound light microscope,living things CANNOT be viewed under this type of microscope, the preparation process kills them, 2 types,trans |
| compound light microscope | a common tool in a life science laboratory,an instrument that magnifies small objects so that they can be seen easily,3 main parts: a tube with 2or more lenses,a stage,and a light,items are placed on the stage so that the light passes through them,the len |
| why is it important to use the international system of units | so we can share information with other countries and observation and results |
| scanning electron microscope [SEM] | electrons bounce off the sufaces of the specimen and produce and 3-D image |
Created by:
sydney313
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