| A | B |
|---|
| observation | when you become aware of something using your five senses |
| inference | when you make a mental judgement based on your observation |
| qualitative observation | describes what is observed using adjectives |
| quantitative observation | uses numbers to measure |
| variables | anything that could affect the results of an experiment |
| control variables | stay the same, remain constant throughout the experiment |
| independent variable | the one thing in an experiment that is changed and tested |
| dependent variable | the part of the experiment that is measured, the response to the independent variable |
| matter | anything that has mass and takes up space |
| mass | the amount of matter in a solid, liquid, or gass |
| Mass everywhere | does not change on Earth or in space |
| volume | is the amount of space an object takes up |
| solids | molecules packed close together and vibrate |
| liquids | molecules have space to slide past one another |
| gases | molecules are farther apart, move fast, and collide |
| metals | good conductors of heat and electricity |
| rubber | good insulator of heat and electricity |
| atoms | the smallest particles of matter (non-living) |
| protons | the positively charged part of an atom |
| electrons | the negatively charged part of an atom |
| neutrons | the part of the atom that has no charge |
