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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 |