| A | B |
|---|
| science | a method of obtaining knowledge about nature |
| hypothesis | a proposed answer to a question about nature (an educated guess) |
| theory | a hypothesis that has been tested many times and is supported by evidence |
| technology | the use of scientific knowledge to improve the quality of human life |
| meter | the base unit of length |
| gram | the base unit of mass |
| liter | the base unit of volume |
| kilo | one thousand (k) |
| centi | one hundredth (c) |
| milli | one thousandth (m) |
| mass | a measure of the amount of matter in an object |
| matter | anything that has mass and takes up space |
| weight | a measure of the force of gravity acting on matter |
| volume | a measure of how much space an object takes up |
| controlled experiment | a method for testing a hypothesis |
| variable | a factor that makes the experimental group different from the control group |
| balance | a tool used to measure mass |
| graduated cylinder | a tool used to measure volume |
| area | =length X width |
| volume | =length X width X height |
