| A | B |
|---|
| Air Pressure | The force put on a given area by the weight of the air above it. |
| Atmosphere | The blanket of gases that surrounds the Earth. |
| Cirrus Cloud | A cloud high in the sky that has a feather shape and is created from ice crystals. |
| Cold Front | A front where cold air moves under a warm air mass. |
| Conditions that make up weather | Temperature; Air pressure; Amount of moisture in the air; Wind; Clouds; Precipitation. |
| Coriolis Effect | The curving path of a moving object caused by the Earth’s rotation. |
| Cumulus Cloud | A cloud that appears puffy and rises up from a flat bottom. |
| Easterlies (Trade Winds) | Global winds existing around the tropical latitudes that blow from east to west. |
| Evaporation | The slow change of water from a liquid to a gas in the water cycle. |
| Front | A boundary between air masses with different temperatures. |
| Hemispheres | Either the northern or southern half of the earth as divided by the equator or the eastern or western half as divided by a meridian. |
| Hurricane | A very large, swirling storm with very low pressure at the center. |
| Isobar | A line on a weather map connecting places with equal air pressure. |
| La Niña | Temporary cooling of the Pacific Ocean near the equator. A strong La Niña causes dry winters in the Southeastern US. |
| Latitude | Imaginary lines on Earth that show how far north or south a location is from the equator. |
| Precipitation | Any form of water particle that falls from the atmosphere and reaches the ground. |
| Run Off | Precipitation that flows across the land’s surface into rivers and streams. |
| Sea Level | The level of the ocean’s surface. Other locations are measured in relation to sea level (ex. 1,500 feet above sea level). |
| Stratus Cloud | A cloud that forms in blanket like layers. |
| Tornado | A violent, whirling wind that moves across the ground in a narrow path. |
| Troposphere | The layer of the atmosphere closest to the Earth’s surface. |
| Rain | precipitation that falls through warm air and lands on warm ground |
| Sleet | rain that falls through freezing temperatures (freezing the rain drop) |
| Warm front | A front where warm air moves in over a cold air mass. |
| Water Cycle | The continuous movement of water between Earth’s surface and the air, changing from a liquid to a gas to liquid (caused by the heat of the sun). |
| Weather | What the lower part of the atmosphere is like at any given time. |
| Wind | Air that moves horizontally. |
| Wind Speed | How fast wind is moving. |
