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Lab Safety - Eric
| Question | Answer |
|---|---|
| Safety goggles | worn to protect eyes from hazzards such as wind, glare, water, or flying debris, also used when testing a gas |
| terrarium | small closed container where living plants and sometimes small animals are kept and observed |
| hand lens | used to observe things in a terrarium, it magnifies objects and is hand held |
| pan balance | measures mass of an object, has 2 identical pans, one pan for object, one pan for weights |
| triple beam balance | measures mass, has 3 beams, ones, tens, and hundreds, used to compare mass of 2 objects |
| thermometer | used to measure the temperature of something |
| procedure | step by step explanation telling how something was done |
| scientific method steps | state the question, make observations, make hypothesis, do experiment, collect data, and communicate conclusion |
| observation | looking for something or someone carefully in order to gain information |
| conclusion | statement that tells what an investigation showed, based on obervations and data |
| opinion | belief or judgment that does not have to be backed up by evidence |
| variable | any factor that can change an experiment |
| inference | an explanation that you figure out without actually observing something yourself |
| control | in an experiment, this is the setup to which you will compare all the others |
| hypothesis | an idea that can be tested by an experiment or an observation |
| scientific method | ways that scientists perform investigations using logic and reasoning |
| clock | measures time |
| spring scale | measures weight |
| graduated cylinder | measures volume |
| meter stick | linear measurement of length, width,height and perimeter |