Depressions + Anticyclones

Question 1

An area of pressure which moves from West to East in the UK?

Answer 1

Depression - low pressure

Question 2

What Brings dry, settled weather

and why?

Answer 2

Anticyclone - this is because, cold air sinks meaning clouds don’t form and sinking air creates high pressure therefore no formation of clouds means no rain

Question 3

We can recognise a depression as there will be…?

Answer 3

• cold fronts
• warm fronts
• very tightly packed isobars
• air pressure will decrease/be low

Question 4

In a depression, which is the first front to pass over?

Answer 4

Warm front

Question 5

In a depression, when warm air meets cold air what happens?

Answer 5

The warm air rises above the cold air, then it will drizzle

Question 6

What does widely spaced isobars mean in an anticyclone?

Answer 6

The weather will be calm and not windy

Question 7

What happens if there are no fronts in an anticyclone?

Answer 7

• there will be no rain
• in Jan/Feb because of lack of cloud cover - cold + frosty
  + mist + fog
• Jun/July - hot + sunny

Question 8

What is the next front to pass through in a depression?

Answer 8

cold front

Question 9

When do cold fronts occur in a depression?

Answer 9

• when cold air meets warm air
• cold air pushes warm air upwards
• as warm air is pushed up, it will :
  cool, condense, form clouds + rain

Question 10

In a depression what do winds do?

Answer 10

• windy if close together
• blow along isobars
• blow anticlockwise