• Winds inside a tornado may reach speeds of more than 400 kilometers an hour. A tornado may suck up cars, trees, and even buildings only to smash them back down to Earth. Tornados usually last less than ten minutes. However, they can leave behind a trail of severe destruction.
• Today, forecasting tomorrow’s or next week’s weather is the job of meteorologists (气象学家), scientists who study the weather. Modern weather forecasting depends on collecting enormous amounts of information—all around the world.
pattern 模式
International Kite Festival
WEATHER FORECAST
• If you want to know what the weather will be like tomorrow, you can find a forecast in the newspaper, on TV, or on Internet. Until about 150 years ago, however, forecasts were made by people observing their surroundings. They paid a lot of attention to the clouds and the winds.