| A | B |
| bar graph | atool that uses bars to show the relationships between variables; can be vertical and can display any numerical data. |
| estimation | The method of making a rough measurement. |
| circle graph | A tool used to show the parts of a whole. |
| graph | A diagram that shows the relationship; tool used to collect, organize,and summarize data in a visual way so that it is easy to use and understand. |
| Kelvin | A scale that measures temperature in SI; begins at zero Kelvin, which is the coldest temperature possible in nature. |
| kilogram | A SI unit for mass. |
| line graph | A tool used to show the relationship between two variables. |
| measurement | The way to describe the world with numbers; can describe objects and events with length, volume, mass, temperature, and rates. |
| mass | The amount of matter in an object. |
| rate | Tyhe ratio of two measurements with different units -- for example, speed, measured in kilometers per hour. |
| meter | The SI unit of length. |
| table | A tool used to display information in rows and columns so that it is easier to read and understand. |
| SI | International System of Units, which was designed to five a worldwide standard of physical measurement for science, industry, and commerce and uses units such as the meter, cubic meter, kilogram, and Kelvin. |