| A | B |
| life science | The study of living things |
| scientific method | A series of steps that scientists use to answer questions and solve problems |
| hypothesis | A possible explanation or answer to a question |
| controlled experiment | An experiment that tests only one factor at a time |
| variable | The factor in a controlled experiment that changes |
| theory | A unifying explanation for a broad range of hypotheses and observations that have be supported by testing |
| technology | The application of knowledge, tools, and materials to solve problems and accomplish tasks |
| compound light microscope | A microscope that consists of a tube, a stage, and a light source |
| electron microscope | A microscope that uses tiny particles of matter to produce magnified images |