| A | B |
|---|
| volume | amount of space an object occupies |
| density | mass per unit volume |
| mass | amount of material in an object |
| coordinate system | a grid of imaginary lines to locate a point |
| latitude-longitude | Earth's coordinate system |
| Equator | reference line for lattitude |
| Prime Meridian | reference line for longitude |
| observation | first step in the scientific method (direct or indirect) |
| hypothesis | conclusion based on observations |
| scientific law | rule of nature describing behavior |
| cartographer | makes maps |
| red | the color on maps for roads |
| profile | the side view of a surface |
