"People are always talking about the weather. We want to know if it will be warm or cold, sunny or rainy. This helps us decide what to wear. It also helps us plan what to do. Another reason we talk about the weather is because it is always changing. It can be sunny when we wake up but pouring down rain by lunch time. People who study the weather are called meteorologists. One of the most important things meteorologists study is weather fronts. A weather front is the area between cold and warm chunks of air, called air masses. Watching weather fronts helps meteorologists forecast what the weather will be. And that helps people plan better. Forecast means to predict what will happen ahead of time"-- Provided by publisher.

Let's talk about the weather -- What is weather? -- Is it weather or climate? -- Air masses on the move -- Meet me at the front -- Cold front -- Warm front -- Stationary front -- Occluded front -- Jet streams -- When el nino and la nina play -- Predicting changes in the weather.