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Chapter 2 CPOScience
Question | Answer |
---|---|
measurement | A number that includes a unit. |
unit | A specific quantity that is counted to make a measurement. |
meter | The basic distance unit for the SI Units system of measurement. |
liter | The basic unit of volume in the SI Units measuring system. |
gram | The basic unit of mass in the SI Units measuring system; one-thousandth of a liter. |
volume | A measurement of how much space is occupied by an object. |
matter | The substance of all objects; all matter is made of atoms and has mass. |
atom | A particle of matter. |
mass | The amount of matter that an object has. |
weight | A measure of mass and the force of gravity on an object. |
system | A group of objects and the factors that affect the objects. |
variable | A factor that affects an object; examples include mass, temperature, speed, and time. |
independent variable | A variable that is changed in an experiment. The independent variable is sometimes called the manipulated variable. |
dependent variable | A variable that is affected by the change to the independent variable. The dependent variable is sometimes called the responding variable. |
control variable | A variable that is held constant in an experiment. |
energy | A measure of a system’s ability to change. |
graph | A picture that shows how two variables are related. |
milli- | 1,000 times smaller |
centi- | 100 times smaller |
kilo- | 1,000 times bigger |