| A | B |
|---|
| variable | is anything you can change in an experiemnt that might affect the outcome of the experiment |
| pendulum | is a mass from a fixed point, free to swing back and forth when put in motion |
| cycle | (in reference to the pendulum) is one complete swing back and forth |
| capacity | the amount of fluid a container can hold when full |
| buoyancy | the ability to float |
| displacement | it is the water that is pushed out of the way when a boat or other object is placed in water. The weight of the water pushed away is equal to that of the floating object. |
| system | a set of objects that are related is some way and can be isolated for study |
| release position | the angle from which the string of the pendulum is let go to swing freely |
| Archimedes | discovered the phenomena of displacement while taking a bath |
| surface tension | the strong attraction of water molecules at the surface of water which creates buoyancy and makes it possible to overfill a container |
| volume | the measure of the space inside a closed figure of three dimensions |
| thrust | a push with force; the force driving an object forward |
| projectile | any object that is thrown, hurled, or shot(such as a stone) |
| trajectory | the curved path described by a projectile traveling through space |
| velocity | rate of motion, speed |
| syringe | a device used to suck liquid from a container or inject liquid into something |
| graduated cylinder | a cylinder shaped container with liquid measurements marked on it and used to measure liquid |
| density | the quantity of matter in a unit of volume |
| catapult | a device used for launching an object; in ancient times they were used for battle |
| experiment | is an investigation designed to find out how variables affect outcomes |
| controlled experiment | an experiment in which one variable is changed while all other variables are controlled or kept the same, and the outcome is then compared to a standard |
| opinion | is one's personal feelings about something |
| inference | is really a conclusion based on what was observed |
| observations | are pieces of information that come directly through your five senses |
| predictions | a guess based on information and experience |
| data | is information (facts and figures) we collect doing an experiment from which conclusions can be drawn |
| hypothesis | is a likely explanation of a problem(an unproved theory) |
| conclusion | a judgement or opinion reached by reasoning |
