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Nature of Science
Vocab from the NOS unit
| Term | Definition |
|---|---|
| observation | Using one or more of your senses to gather information |
| constant | Conditions in an experiment that are kept the same |
| precision | Close, repeated measurements |
| inference | An educated guess based on previous knowledge or cues |
| prediction | An educated guess about what will happen in the future |
| control group | Variables are compared to this "normal" group that isn't changed. |
| meter | Metric unit of measurement for distance |
| liter | Metric unit of measurement for volume |
| International System of Units | Metric system, based on powers of 10 |
| accuracy | How close a measurement is to the correct value |
| hypothesis | Explanation of an observation that can be tested |
| independent variable | This is what the scientist changes in an experiment |
| gram | Metric unit of measurement for mass |
| scientific law | Rule that describes a repeatable pattern in nature |
| dependent variable | What is measured or observed in an experiment |
| experiment | A test of the hypothesis |
| scientific theory | An explanation (why or how) of observations that have occurred many, many times |
| scientific notation | A method of writing large and small numbers in a shorter form |
| quantitative | Observations that include numbers |
| qualitative | Observations that are descriptions |
| volume | Amount of space an object takes up, use grad. cyl. or LxWxH |
| mass | Amount of matter in an object, use scale or TBB |
| density | amount of mass per unit volume (m/v) |
| density of water | 1 g/ml |
| water displacement | Method used to find volume of a solid |
| 3 metric base units | meter, liter, gram |
| 1 cm = ? mm | 10 mm |
| Name the metric prefixes in order from biggest to smalles | Kilo, Hecto, Deka, (base unit), deci, centi, milli |
| 1 meter = ? cm | 100 cm |
| triple beam balance | tool for measuring mass (units are grams) |
| graduated cylinder | tool for measuring volume of a liquid (units are ml) |
| measuring irregular solid volume | water displacement (like a rock or ball) |
| measuring regular solid volume | Measure with a cm ruler and multiply: LxWxH |
| density | measures how tightly packed particles are in an object |
| density of objects that float in water | less than 1 g/cm^3 |
| density of objects that sink in water | greater than 1 g/cm^3 |
| To calculate the density of an object | D = mass divided by volume |
Created by:
jhenretta
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