Dangerous Weather On a hot summer day the surface of the Earth is heated by the sun. The Earth's surface heats the air just above the surface through the process of conduction. The action of warm air rising and cold air sinking (convection) plays a key role in the formation of severe thunderstorms. If the warm surface air is forced to rise, it will continue to rise, because it is less dense than the surrounding air. In addition, it will transfer heat from the land surface to upper levels of the atmosphere through the process of convection. Two of the most important ingredients for thunderstorm formation are instability (unstable air) and moisture. There are three main types of thunderstorms; orographic, air mass, and frontal. Supercell thunderstorms occur when very strong updrafts are balanced by downdrafts. The result is a strong, persistent updraft of warm moist air. At some point, condensation high in the cloud (now in the form of water droplets and ice) falls to the ground as rain.
The Weather in English - Vocabulary The Weather in English In English, we usually use it is when we talk about the weather. This is normally: It is + adjective OR It is + verb-ing It is + adjective = A description of the weather It is sunny today. It's hot and humid today. We can also say: It is a + adjective + day (or morning/afternoon/night) It's a fine day. It is + verb-ing = This type of weather is happening now. It's drizzling outside. You can also use it is in different tenses It was cold yesterday. When you are learning vocabulary about the weather, it is important to remember that some of the words have a noun form, a verb form and/or an adjective form. Rain: (noun) The game was cancelled because of the rain. It pays to learn the different forms of each word and when they are used. Nouns and Adjectives Many times when we are talking about the weather, we can add the letter Y to the end of a noun to make it an adjective. Questions about the weather People commonly ask about the weather by saying: What's it like out(side)?
Weather Forecast People often need to check weather forecasts to prepare for the day or even a vacation because weather conditions can determine what we wear and what we do. Listen to the words below and consult a dictionary if you need a definition. Write a sample sentence for each word to learn how it is used in context, as seen in the example. [ Other Audio Options: Play RealMedia | Play Window Media ] Weather Patterns: "It's -- " breezy clear cloudy (partly cloudy) damp dry foggy humid rainy showery snowy stormy sunny windy Temperatures: "It's -- " freezing cold chilly warm hot scorching Verbs It's raining. Now, complete the sentences below with the best answer: Imagine that you have time and money to travel to anywhere in the world for two weeks. Online Listening Practice (from www.esl-lab.com and www.dailyesl.com): Friday's Weather Report: Medium
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