| A | B |
| indirect observation | an example would be seeing trees move when the wind blows |
| direct observation | looking at a cow or smelling pizza |
| observation | using the 5 senses to tell things about objects |
| matter | anything that takes up space |
| solid | have a definite shape. Take up a definite amount of space |
| liquid | take the shape of their container |
| gas | have no definite shape |
| plasma | like a gas but high in energy |