click below
click below
Normal Size Small Size show me how
Ch3
| Question | Answer |
|---|---|
| weather | The condition of Earth’s atmosphere at a particular time and place. |
| atmosphere | The envelope of gases that surrounds Earth. |
| water vapor | Water in the form of a gas. |
| density | The ratio of the mass of a substance to its volume (mass divided by volume). |
| air pressure | The pressure caused by the weight of a column of air pushing down on an area. |
| barometer | An instrument used to measure changes in air pressure. |
| mercury barometer | An instrument that measures changes in air pressure, consisting of a glass tube partially filled with mercury, with its open end resting in a dish of mercury. |
| aneroid barometer | An instrument that measures changes in air pressure without using a liquid. |
| altitude | Elevation above sea level. |
| troposphere | The lowest layer of Earth’s atmosphere. |
| stratosphere | The second-lowest layer of Earth’s atmosphere. |
| mesosphere | The layer of Earth’s atmosphere immediately above the stratosphere. |