| A | B |
|---|
| air pressure | The weight of the air being puled down on an area of the Earth's surface. |
| air temperature | The amount oif warmth or coldness in the air. |
| anemometer | An instument to measure wind speed. |
| atmosphere | The blanket of gases that surrounds the Earth. |
| barometer | The tool used to measure air pressure. |
| cirrus | Fair weather, feathery , white clouds made of ice crystals. |
| climate | The average temperature & humidity in an area over a long period of time. |
| cloud | Collection of tiny drops of water or particles of ice that float in the air. |
| condensation | When water vapor turns into liquid water. |
| cumulous | Large, puffy, white clouds that may be associated with fair weather, snow or even thunderstorms. |
| dew | Forms when moist air near the Earth's surface cools - becomes frost if ice crystals form because the temperature falls below freezing. |
| evaporation | When liquid water turns into wate vapor (gas) |
| fog | Stratus clouds that appear close to the ground - most common near large bodies of water. |
| forecast | To predict the weather to come. |
| frost | Ice crystals that form from dew freezing. |
| hail | Precipitation that forms when rain becomes stuck in an air currect & many layers of ice are added. |
| humidity | A measure of the amount of moisture is in the air. |
| meteorologist | A scientist who studies weather. |
| observation station | Places where there are instruments to measure temperature, air pressure, wind speed, precipitation & other weather data. |
| precipitation | Moisture that returns to the Earth from the atmosphere. |
| psychrometer | An instrument used to measure relative humidlty. |
| rain | Most common precipitation- forms when wate condenses & freezes on an ice crystal. |
| rain gauge | A tool used to measure the amount of precipitation. |
| relative humidity | Amount of water the air is holding at a certain temperature compared to how much it could hold. |
| sleet | Raindrops that pass through cold air & refreeze. |
| snow | A 6-sided ice crystal that appears white. |
| satellite | An object that orbits the earth & transmits data. |
| stratus | A cloud that is called fog when it is close to the earth. |
| temperature | The amount of warmth or coldness in something. |
| water cycle | The processes that water goes through as it leaves & then returns to earth. |
| weather | The condition of the air around the earth at a specific time. |
| weather balloon | Sent up by weather stations to collect data as they rise through the atmosphere. |
| weather station | One of many parts of the National Weather Service that gathers & shares weather information. |
| weather map | Helps to locate & identify weather fronts, air pressure, temperature, precipitation & cloud cover. |
| wind | Horizontal movement of air from 1 place to another. |
