Vocabulary Practice
A. Completion. Complete the information with the correct form of words form the box. One word is extra.
Combination Upward Cycle Professional Rotate
Qualify Energize Forecast Humid Blame
A tornado is a column of quickly rotating air that reaches from the clouds all the way to the ground below. Like their big sisters, the tropical cyclones, tornadoes are formed in upward-moving, warm and 1. _________________ air. Also like tropical cyclones, tornadoes produce strong winds that 2. ______________________ around a center of low pressure. Although tornadoes are much smaller than tropical cyclones-the largest being about four kilometers across-their winds can be as fast as 480 kph.
You can’t always see a tornado, but it becomes a frightening dark color when it pulls dirt 3. ________________ from the ground. The power of tornadoes is expressed on a scale from F0 to F5. An F0, with wind speeds up to 110 kph. Might damage signs, while a tornado with wind speed of about 420 to 480 kph. Can blow houses