weather [wind] [6] [comprehension quiz]

Jet streams are bands of strong wind that generally blow from west to east all across the globe. They are narrow bands of strong wind in the upper levels of the atmosphere. The position of the polar jet stream or the subtropical jet stream over the UK determines the type of weather we have. If the polar jet stream is situated to the south of the UK we will experience colder than average weather. If the polar jet stream is situated to the north of the UK we will experience warmer than average weather. If the polar jet stream is situated over the UK we will experience wetter and windier than average weather. Jets streams however do not stay in the same position or flow in the same pattern. The diagram shows how they can be both stable or wavy. and the labels show the effects of these changes.

1. What is a jet stream? bands of moderate winds low in the atmosphere bands of weak winds high in the atmosphere bands of strong winds high in the atmosphere 2. Which of these is not a jet stream? polar jet stream tropical jet stream subtropical jetstream 3. If the polar jetstream is situated over the UK.... we will experience colder and wetter weather we will experience drier and windier weather we will experience wetter and windier weather 4. If the polar jetstream is situated south of the UK.... colder than average weather warmer than average weather wetter than average weather 5. If the polar jetstream is situated north of the UK.... colder than average weather warmer than average weather wetter than average weather

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