| A | B |
|---|
| Gas which makes up 21% of the atmosphere. | Oxygen |
| An object that floats through space. | Meteoroid |
| The amount of matter in something. | mass |
| The amount of space something takes up. | volume |
| The amount of matter in a given volume. | density |
| The force pushing on an area. | pressure |
| The result of the weight of a column of air pushing down on an area. | air pressure |
| Instrument used to measure air pressure. | barometer |
| The distance above Sea Level. | altitude / elevation |
| Gas which makes up 78% of the Earth's atmosphere. | Nitrogen |
| The average level of the surface of Earth's oceans. | sea level |
| The heating, rising, cooling and sinking of air in the Troposphere | convection |
