the study of ancient societies by looking at old tools, bones and buildings the smallest unit; consisting of a nucleus (protons and neutrons) with electrons travelling around it the power to make independent decisions the study of living things a room in school where you learn. depending on a speech sound; any letter in the alphabet that is not a vowel. different; opposite separate; composed of distinct parts how well something works to make it difficult for a process to start or continue in a normal way to start a way to put (inject) a drug or another substance into your body a small animal with 6 legs such as a bee, ant or fly. on the side; moving sideways sensible; reasonable a small change to a machine, system, or plan the study of form and structure a wall, screen, or piece of glass used to separate one area from another an outline; an imagined sequence of events in a plan or project