| A | B |
| analysis | the process of studying something closely and critically |
| classification | the process of grouping things based on their simularities |
| comparative | a word used when saying how two things are alike and different |
| conclusion | a summary of the results of the experiment and a statement of how the results relate to the hypothesis |
| conservation | the process of using a resource wisely so it will not be used up |
| control variable | a variable that is kept constant or the same during a controlled experiment |
| dependent variable | variable that changes as a result of change in the independent variable and is usually measured |
| disposal | the act or means of getting rid of something |
| experiment | the act of conducting a controlled test or investigation |
| hypothesis | an explanation that is based on prior scintific research or observations and that can be tested : an educated guess |
| independent variable | the experimental factor that is changed; the variable whose effect is being studied |
| inference | an irepretation of an observation based on evidence or prior knowledge |
| invalid | not supported by facts; not true |
| model | represent an idea, event, or object to help people better understand it |
| observation | use of one or more of the senses to gather information |
| prediction | a logical statement about what will happen if the hypothesis is correct |
| qualitative | an observation made without measurement |
| quantative | numbered measurement |
| recycle | to change something so it can be used again |
| scientific theory | an explantation supported by many tests and accepted by a general consensus of scientists |
| simulation | the imitation or recreation of an event or situation |
| trend | the way a system is generally developing or changing g |
| trial | the act of testing something, single or multiple times |
| valid | founded on fact or true |
| variable | any factor that can change |