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Tools Life Scientist
Term | Definition |
---|---|
Compound Light Microscope | Consists of a tube with lenses, and a light source - it magnifies the image |
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 |
Scanning Electron Microscope | 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 |
X-Rays | Used for almost a century to see internal structures of organisms [bones, heart, lungs] and the structures of proteins |
CT Scans [Computerized Tomography] | Low dosage x-ray beams are passed through the body at different angles, and 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 |
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 |
Computers | Can collect, store, organize, and analyze information - can create graphs, solve math problems, and analyze data - With the help of computers, life scientists are able to solve problems that they weren't able to solve in the past |
Graduated Cylinder | Measures the volume of liquids - basic unit is liter |
Thermometer | Measures how hot or cold an object is - basic unit is degree |
Balance | Measures the mass of an object - basic unit is kilogram |
Meter Stick | Measures the length of objects - basic unit is meter |
Metrics | The SI unit of measurement based on the number of ten |
Length | How long an object is - basic unit of length is the meter |
Volume | The amount of space an object occupies Liquid is measured in Liters Solid objects are measured in cubic meter [m3] or cubic centimeters [cm3] |
Mass | The amount of matter in an object - basic unit of measure is kilogram |
Calorimeter | Instrument used to measure heat Heat isn't measured with thermometer |
Kelvin | Official SI unit for temperature |
Joules | Unit of measure for heat |
Degrees | Unit of measure for temperature |
Technology | The application of science for practical purposes, the use of tools, machines, materials, and processes to meet human needs |