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Science
The Tools of Life Scientists
| Term | Definition |
|---|---|
| Compound Light Microscope | consists of a tube with lenses, a stage, and a light source- it magnifies the image |
| Mass | the amount of matter in an object - the basic unit of measure is the kilogram |
| Graduated Cylinder | measures the volume of liquids - basic unit is liter |
| Volume | the amount of space an object occupies liquid is measured in liters solid objects are measured in cubic meters (m^3) or cubic centimeters (cm^3) |
| Calorimeter | the instrument heat is measured in |
| Computers | can share, collect, store, organize, and analyze information - can create graphs, solve math problems, and analyze data - life scientists are able to solve problems that they were not able to solve in past. |
| Electron Microscope | tiny particles of matter are used to magnify images |
| Transmission Electron Microscope | electrons pass through the specimen and produce a flat image - can magnify up to 200,000 times the actual size |
| Length | how long an object is - the basic unit of length is the meter |
| Meter Stick | measures the length of objects - basic unit is meter |
| Balance | measures the mass of an object - basic unit is kilogram |
| Thermometer | measures how hot or cold an object is - basic unit is degree |
| MRI (magnetic resonance imaging) | provides a clearer image than x-rays by using short bursts of magnetic field - useful for studying brain and spinal tissue (less than a CT scan) |
| CT Scan (computerized tomography) | low dosage x-ray beams are passed through the body at different angels, & often a dye is injected to help highlight tissues - provides a clearer, more detailed image than x-rays - useful for studying brain and spinal tissue |
| X-rays | used for almost a century to see internal structures of organisms (bones, heart, lungs) and the structures of proteins |
| Scanning Electron Microscopes | electrons bounce off the surface of the specimen and a three-dimensional (3-D) image is produced - can magnify up to 100,000 times the actual size |
| The International System of Measurement (SI) | metrics, is used by scientists all over the world |
| Joules | the measurement heat is measured in |
| Energy | what heat is |
Created by:
Jessica*L
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