| A | B |
|---|
| analyze | To study something by breaking it down into simpler parts |
| bob | A weight at the end of a line or rod; for example, the weight at the end of a pendulum |
| calendar | A device or system used to keep track of the passage of time |
| calibrate | To put marks on a scale, container, or other device so that measurements taken using it will be accurate and consistant |
| cause | Something that produces an effect |
| classify | To group two or more things together because they share one or more properties |
| conclusion | A decision that is based on observations or on a study of data |
| constant | A condition in a controlled experiment that is not changed |
| controlled experiment | A scientific investigation in which one variable is changed and all the others are kept the same, or constant |
| data | Information, such as that gathered during an experiment |
| eclipse | The complete or partial hiding of one body in the sky as it passes into the shadow of another |
| effect | Something brought about by a cause |
| escapement | A mechanism that controls wheel movement and balance in a clock or timepiece |
| experment | A procedure that is carried out to investigate a scientific question |
| frequency | The number of times a certain process, such as the back and forth swing of a pendulum, occurs in a given period of time |
| gnomon | An object that, by the length or position of its shadow, tells the time of day |
| hypothesis | A prediction about how something works or how two variables are related |
| infer | To draw a conclusion about a specific event based on observations and data |
| invent | To think or create something for the first time |
| metronome | A device that marks precise intervals of time by clicking |
| opinion | An expression of how one feels or thinks about something based on personal views, not necessarily on facts |
| pattern | An expression of how one feels or thinks about something based on personal views, not necessarily on facts |
| pendulum | A body that is suspended by a string or wire from a fixed point and that can swing back and forth |
| phase | A stage in a process. The apparent shape of the moon at any time is an example. |
| property | Something about an object that helps to identify it. |
| result | Effect; something produced by a cause. |
| troubleshoot | To observe and test a device to see why it is not working. |
| variable | An element in an experiment that can be changed. |
| weight | A measurement of the force of gravity on an object. |
| zenith | The highest point; in astronomy, the point that is directly overhead in the sky. |
