Weather Hazards Flashcards
Name the 3 cells in the global atmospheric circulation model.
Hadley
Ferrel
Polar
What does the global atmospheric circulation model show?
How air moves in the atmosphere
What causes the difference in air pressure across the surface of the Earth?
Differences in temperature between the equator and the poles.
Differences in pressure create winds that blow from areas of high pressure to areas of low pressure.
What is the weather like in a high pressure belt?
Dry, cloud free. There is little moisture in the air.
What is a tropical storm?
Intense low pressure weather system with heavy rain and strong winds.
What latitudes do most tropical storms develop?
5-30 degrees north and south of the equator.
What conditions are needed for a tropical storm to develop?
Sea temperature 27 degrees Celsius
50m sea depth
Low pressure
Explain why tropical storms move and spin.
Easterly winds near the equator cause tropical storms to move towards the west. Storms spin as the Earth’s rotation deflects the path of the winds (Coriolis Effects). They spin anticlockwise in the northern hemisphere and clockwise in the southern hemipshere.
Give the name, date and location of a tropical storm you have studied.
Hurricane Katrina
2005
New Orleans, USA
Name 4 primary effects Hurricane Katrina.
1,800 people died
300,000 homes destroyed
3 million left with no electricity
$300 billion worth of damage
Name 3 secondary effects of Hurricane Katrina
Storm surge 6m high
1 million homeless
Oil prices rose as a result of damaged oil facilities
Name 3 immediate response of Hurricane Katrina
UK sent food aid
25,000 given temporary accommodation
Emergency services rescue 50,000 people
Name 2 long term responses of Hurricane Katrina
$34 billion set aside for building repairs
$800 million set aside to renew flood defenses
How are tropical storms monitored?
Radar, satellites and aircraft
Explain how education has reduce the impacts of tropical storms.
It can educate people on how to stay safe. Education can also provide drills in schools so pupils are aware of how to stay safe.
Name and date an extreme weather event in the UK.
Storm Jude, 2013
Outline the causes of Storm Jude.
Storm Jude was a depression.
Cold air coming south east from Canada met warm, moist air coming up from the Caribbean.
This caused an area of low pressure to develop and the storm began to form.
The storm was carried across the Atlantic Ocean and swept across the country, causing high winds and torrential rain.
Name 3 primary effects of storm Jude.
Structural damage to buildings from wind and flooding
Trees uprooted / felled
17 deaths overall in Europe ( 4 in UK )
Name 3 secondary effects of storm Jude.
Power supplies cut off – 660,000 homes
Rail networks disturbed – 5 companies cancelled all trains in SE
130 flights cancelled or delayed
Name 3 immediate responses to storm Jude
Caravans anchored to ground
Met Office monitored storm - warnings and advice given
Social media used to share warnings and updates – 10% increase following met office twitter and YouTube
Name 3 long term responses to storm Jude.
Compensation provided for those affected
Rebuilding buildings
Fixing infrastructure such as rail networks
What is drought?
A long period of time without rain
In the UK, how can rain become a hazard?
Too much rain in too short a time can cause flooding.
This can damage homes, possessions, transport and businesses.
