| A | B |
|---|
| pendulum | A mass, suspended on a pivot point, free to swing |
| controlled experiment | All the variables are controlled except one, allowing the experimenter to observe the effect of that one variable on the outcome |
| cycle | Any motion or activity that repeats itself |
| variable | Anything you can change in an experiment that might affect the outcome |
| two-coordinate graph | Displays the relationship between the independent and dependent variables in an experiment |
| system | A set of related objects that work together |
| independant variable | The variable that is known and being tested by the experimenter |
| dependant variable | The variable that is not known before the start of the experiment and changes depending on the other variable |
| controlled variable | What is kept the same in a controlled experiement to ensure a “fair test” |
| mass | The amount of matter an object contains |
| prediction | An estimate based on information of experience |
| pictograph | A graph using pictures or symbols |
| example of a variable that did affect the number of swings | length of swinger |
| accuracy of data | Scientists can repeat the experiment, use a controlled experiment, or use smaller units to measure results |
| What affects the speed of the pendulum? | Length of the pendulum |
| standard | The basic procedure used in a controlled experiment, before changing any of the variables |
| hypothesis | An idea that might answer a scientific question |
| elements that should stay the same for testing RELEASE POSITION | Length, number of seconds to count, mass on the bob |
| elements that should stay the same for testing MASS | length, number of seconds to count, release position |
| elements that should stay the same for testing LENGTH | mass on the bob, number of seconds to count, release position |
| trend line | Shows a pattern that most of the data makes |
