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Science Unit C Ch 4
Chapter 4 Vocabulary
| Question | Answer |
|---|---|
| troposphere | The bottom layer of the Earth's atmosphere. |
| thermosphere | The upper layer of the atmosphere where temperatures are extremely high. |
| mesosphere | The layer of the atmosphere where air is thin and most meteors burn up. |
| stratosphere | The layer of the atmosphere in which ozone is present. |
| air mass | A large body of air that has the same characteristics throughout. |
| air pressure | The weight of air pressing down on an area. |
| relative humidity | A comparison of the actual amount of moisture in the air to the greatest possible amount that could be in the air at the same temperature and pressure. |
| front | The border between two air masses that collide. |
| forecast | A prediction of what the weather will be like in the future. |
| station model | An arrangement of symbols and numbers that show the weather conditions recorded at a weather station. |
| surface map | A map that includes station models and information about fronts and about centers of high pressure and low pressure. |
| weather balloon | A balloon released into the atmosphere that carries a package of instruments that records data about temperature, air pressure, and humidity. |
| weather map | A map that shows data about recent weather conditions across a large area. |
| thunderstorm | A very strong storm with a lot of rain, thunder, and lightning. |
| hurricane | A large, spiraling storm system that can be as much as 600 km across. |
| tropical storm | The stage of hurricane development when the winds of a tropical depression reach a constant speed of 63 km/hr (39 mph). |
| tornado | An intense windstorm that often forms within a severe thunderstorm. |
Created by:
mquay
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