| A | B |
|---|
| hypothesis | scientific guess that can be tested |
| experiment | procedure or operation that is designed to help answer a question |
| conclusion | judgement |
| observation | facts |
| procedure | steps to carry out the experiment |
| problem | question you hope to answer |
| control | standard for comparison in an experiment |
| theory | explanation based on observations made during repeated experiments |
| law | rule of nature |
| standard | a fixed quantity used by everyone |
| SI | International System of Units |
| prefixes | make units larger or smaller by multiples of 10 |
| kilo | 1000 |
| Hecto | 100 |
| Deca | 10 |
| deci | .1 |
| centi | .01 |
| milli | .001 |
| meter | SI unit of length |
| volume | amount of space occupied by an object |
| cubic meter m3 | unit of volume of a regular shaped object |
| liter | smaller unit used to measure volume |
| graduated cylinder | tool used to measure volume |
| meter stick | tool used to measure length |
| meniscus | curved surface of the liquid |
| mass | amount of matter in an object |
| kilogram | SI unit of mass |
| balance | tool used to measure mass |
| time | interval between 2 events |
| second | SI unit of time |
| Celsius | SI unit of temperature |
| freezing point | 0 degrees C |
| boiling point | 100 degrees C |
| Kelvin Scale | measures absolute zero,-273 C |
| independent variable | factor changed by the experimenter |
| dependent variable | quantity that changes in the experiment |
| density | mass/volume |
| What state does water have the highest density? | liquid |
