| A | B |
|---|
| ruler | length measurement tool |
| graduated cylinder | volume measurement tool |
| length | distance from one point to another |
| liter | metric unit for volume |
| gram | metric unit for mass |
| triple beam balance | mass measurement tool |
| meter | metric unit for length |
| mass | amount of matter in an object |
| volume | amount of space an object takes up |
| quantitative | an observation that uses numbers or measurements |
| control group | part of the independent variable where conditions are most like normal (you do nothing to it) |
| hypothesis | educated guess of what you think will happen during the experiment |
| qualitative | an observation that uses descriptions from using the senses |
| constants | all of the factors you keep the same in an experiment |
| conclusion | part of an experiment where you refer to your data to tell whether or not your hypothesis was supported |
| inferences | opinions made based on observations |
| dependent variable | result of the change in an experiment (measures the change in an experiment - data) |
| observations | fact based pieces of data made by your senses; there are two types |
| procedure | a list of every step in order needed to carry out an experiment |
| independent variable | the one factor “I” change in an experiment |
| acceleration | change in velocity; (final velocity - initial velocity)/change in time |
| newton's second law | Force = mass x acceleration |
| weight | the force of gravity on an object at the surface of a planet; mass x gravitational pull |
| unbalanced force | a nonzero net force, which changes an object’s motion |
| force | a push or pull exerted on an object |
| velocity | distance/time + direction |
| newton | metric unit of force; equals the force required to accelerate 1kg at 1m/s2 |
| newton's first law | an object at rest stays at rest, an object in motion stays in motion in a straight line at a constant speed unless acted upon by an outside force |
| friction | the force that one surface exerts on another when the two rub against each other |
| inertia | the tendency of an object to resist any change in its motion |
| balanced forces | equal forces acting on an object in opposite directions |
| speed | distance/time |
| gravity | the force that pulls objects toward each other |
| newton's third law | for every action there’s an equal and opposite reaction |
