1.2A Weather Hazards

Question 1

(1)

What is global atmospheric circulation?

Answer 1

TRANSFER of HEAT from equator to POLES by movement of AIR.

Question 2

(1)

What air pressure is the equator at?

Answer 2

LOW

Question 3

(3)

Explain how the air pressure 30 degrees North and South is high.

Answer 3

• Air RISES and then COOLS
• COOL air SINKS
• creates HIGH PRESSURE BELT.

Question 4

(3)

Explain how the Coriolis effect causes change in wind direction.

Answer 4

• Cool air moves TOWARDS Equator (Trade Winds)
  OR
• Cool air moves TOWARDS poles (Westerlies).
• Wind direction changes –> Earth’s ROTATION.

Question 5

(3)

Explain why there are lots of clouds in the UK.

Answer 5

• UK –> LOW PRESSURE
• 60 degrees NORTH
• RIsing WARM AIR = more CLOUDS and RAINFALL

Question 6

(2)

State a UK extreme weather. Give an example.

Answer 6

• Heat waves
• 41 degrees Celcius noted from Heathrow.

Question 7

(6)

How do tropical storms form?

Answer 7

• 27 Degrees Celcius
• Warm water evaporates and condenses into clouds.
• Releasing lots of ENERGY to storms.
• Rising air = LOW PRESSURE
• LOW wind shear.
• Tropical Storms spin due to Coriolis Effect.

Question 8

(1)

What is the gap in the tropical storm called?

Answer 8

EYE.

Question 9

(4)

How does climate change affect a tropical storm’s intensity?

Answer 9

• High sea temperatures
• More EVAPORATION
• More Clouds formed
• Increases energy –> increases POWER of storm.

Question 10

(1)

How does distribution affect tropical storms?

Answer 10

• More oceans could have temperatures ABOVE 27 Celcius.
• Increases tropical storm FORMATION.

Question 11

(3)

Explain how monitoring reduces the impact of tropical storms.

Answer 11

• Use Satellites
• Computer models CALCULATE a PREDICTED PATH of STORM.
• People able to prepare for storm much faster.

Question 12

(3)

Explain how protection reduces the impact of tropical storms.

Answer 12

• FLOOD DEFENSES
• SEA WALLS
• DEFLECTS the high speed water from INFRASTRUCTURE.

Question 13

(3)

Explain how planning reduces the impact of tropical storms.

Answer 13

• Evacuation routes
• People get away from storms
• LESS DEATHS