| A | B |
|---|
| water cycle | The constant recycling of water is called the ___. |
| atmosphere | The ___ is a very thin blanket of air that surrounds Earth. |
| air pressure | All of the particles of air pressing down on the Earth’s surface cause ___. |
| front | A ___ is the area where two air masses meet & where weather happens. |
| troposphere | Almost all of Earth’s weather happens in the ___. |
| sun | Weather begins with the ___, which provides the energy for making weather. |
| air mass | a large body of air that has temperature & moisture similar to that of the area over which it formed |
| dry | Air masses that form over land are generally ___. |
| wet | Air masses that form over water are generally ___. |
| cold | Air masses that form near the poles are ___. |
| warm | Air masses that form near the equator are ___. |
| **** | You must be able to determine the temperature & moisture of an air mass based on where it formed. |
| troposphere, stratosphere, mesosphere, & thermosphere | You must be able to label the 4 layers of the atmosphere in order from Earth's surface up. |
| Meteorologists | ___ are scientists who study & measure weather conditions in order to predict the weather. |
| thermometer | A ___ is an instrument used to measure the temperature of air. |
| barometer | A ___ is an instrument used to measure air pressure. |
| rain gauge | A ___ is an instrument used to measure precipitation. |
| hygrometer | A ___ is an instrument used to measure moisture in the air. |
| anemometer | An ___ measures wind speed. |
| Humidity | ___ is the amount of water vapor in the air. |
| tornado, hurricane, flood, lightning, drought, & blizzard | What are some weather-related natural hazards? |
