Weather hazards associated with high & low pressure systems

Question 1

What are low pressure systems known as?

Answer 1

Depressions

Question 2

What do depressions bring?

Answer 2

Wet, stormy, windy weather

Question 3

What are the hazards in the British Isles with Depressions?

Answer 3

Flood

Question 4

What are the three different fronts

Answer 4

Warm Front
Cold Front
Occluded Front

Question 5

What is a Front?

Answer 5

Leading edge of an air mass

Question 6

Explain warm fronts

Answer 6

• Warm air rises over cold air

- Cools & Condenses

Question 7

Explain Cold Fronts

Answer 7

• Fast moving cold air drives warm air upwards to cool and condense quickly
• Get bigger towering clouds and heavy rainfall

Question 8

Give a Case study of a Flood?

Answer 8

Gloucester Floods - July 2007 - Heavy Rain

Question 9

Give the impacts of the floods in Gloucester

Answer 9

• Hundreds of homes & businesses under water
• Emergency Services Overwhelmed
• Power Supplies Down

Question 10

Give a Case Study to show Tropical Storms

Answer 10

Hurricane Katrina - Aug 2005 (Louisiana USA)

Question 11

Give the impacts of the Hurricane Katrina?

Answer 11

• 80% of city was flooded
• 1200 died
• One million left homeless
• $80 billion damage

Question 12

Give another case study to show tropical storms

Answer 12

Hurricane Jeanne - 2003

Question 13

What are High pressure systems known as?

Answer 13

High - Anti-cyclones

Question 14

What do Anti-Cyclones bring?

Answer 14

Warm, stable conditions. Clear skies

Question 15

What are the hazards in the British Isles with Anti-Cyclones?

Answer 15

Drought

Question 16

Give an examples of drought in UK?

Answer 16

Drought of 2004

Question 17

Give the impacts of the Drought of 2004

Answer 17

• Hose pipe bans

- Fish died - Low oxygen levels

Question 18

Give an example of another drought?

Answer 18

Mali in Sahel region - Africa