Here's what all those words mean:

A is for the Atmosphere: Those layers of air above the earth. All our weather happens in the bottom layer called the Troposphere, six to ten miles thick.

B for one Big Burning sun: Uneven heating of the earth by the sun gives differing air pressures, causing wind. The sun also evaporates water creating clouds and storms.

C for Condensation: That's when water vapor cools, forming clouds and then sometimes rain.

D Drops of precipitation: Precipitation is any form of water that falls from clouds, including drizzle, rain, hail, sleet, or snow.

E Evaporation: The warmth of the sun turns water into tiny particles called water vapor.

F for Front: The line between two masses of air. A cold front is when cold air overtakes warm air, a warm front is when warm air overtakes cold air. In either case, you can get clouds or rain or storms.

G is for the Gust of wind: Winds blow when warm air rises and cool air replaces it. Winds usually blow from areas of high pressure to areas of low pressure.

H is for Humidity: The amount of water vapor in the air. When the humidity is high on a hot day, your body can't cool itself down as fast, so it feels hotter.

I is for the Ice: Most clouds are made at least partly from ice. High clouds like cirrus are made completely of ice.

J is for how high you Jump when thunder booms: Thunder is the sound of air exploding after being heated suddenly by lightning to 50,000 degrees F.

K is for the King-sized cumulonimbus: Cumulonimbus are deep puffy grey clouds that produce thunderstorms, hail, and tornadoes. They sometimes climb forty to sixty thousand feet high.

L is for Lightning: Cumulonimbus clouds become electrically charged from water droplets banging together. The electrical charge is released in a lightning bolt that may reach from one cloud to another or from a cloud to the ground.

M is for the Mercury in my thermometer: A thermometer tells us how hot or cold the air is by how high the mercury climbs in a glass tube.

N is for the Numbers there on my barometer: A barometer measures how heavy or light the air is. Rising pressure usually means fair weather is coming, falling pressure usually means storms approaching.

O is for the Observations: We learn forecasting clues from watching the sky and keeping track of the temperature, humidity, air pressure, and wind direction.

P is for the Pressure of the air: Cooler air is heavier, warmer air is lighter.

Q for Quit: Not Quite yet!

R for Rainbow: Drops of water in the sky act as little prisms, separating sunlight into seven colors: red, orange, yellow, green, blue, indigo, and violet.

S for Snow: Ice crystals fall from cold clouds. In warm weather they melt into raindrops, in cold weather they stay frozen and we get snow.

T is for the Temperature: The measure of how hot or cold the air is.

U and V for Ultra-Violet rays: Sunlight is called ultra-violet light. It can burn your skin if you're in it too long!

W Water cycle: The never-ending cycle of evaporation, condensation and precipitation that brings us rain and storms.

X, Y, Z: Let me know if you can think of something!

One class did think of something. Go here to see what they came up with!