Weather And Climate Unit 1 Question 2

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What is the difference between weather and climate?
Weather is the day to day condition of the atmosphere whereas climate is the average weather over 85 years
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How do you measure Air pressure and what are the units?
Barometer + millibars
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How do you measure temperature and what are the units?
max and min thermometer + degrees
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How do you measure precipitation and what are the units?
Rain gauge + mm's
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How do you measure wind speed and what are the units?
anemometer + mph/kph
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How do you measure wind direction and what are the units?
wind vane + N S E W
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How do you measure CLOUD COVER and what are the units?
Observation + oktas
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where would you set a rain gauge?
in the open half sunk in the ground so it can not be kicked over
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where would you set a thermometer?
measure the temperature in the stack- air temperature- or in a steensonscreen
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where would you set a wind vane?
high enough away from shelter and in full view for reaching direcion
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where would you set an anemometer?
high for no shelter from wind
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Where do weather forecasters get their information for forecasts?
1) weather buoys - anchored at sea - send info to computers 2) land based stations- every 3 hours to head quarters 3) satellites - moniter earth from above on clouds, wind speed and direction
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What is an air mass?
A large body of air which takes on the temperature and moisture characteristics of where is is situated
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What are the 4 main air masses that affect the British isles + how do they affect us?
1)Polar Maritime = over sea= moist, wet + cold 2)Polar continental = over land= dry + cold 3) Tropical Maritime = over sea = warm+ moist 4) Tropical continental = overland= dry + warm
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What are the names of the 2 weather systems that effect the british isles?
Anticyclone + Depression
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Describe the characteristics of an anticyclone.
-area of high pressure -air = sinking= no clouds= no rain. windspeed= low= isobars = wide apart + CLOCKWISE direction. WEEK = Slow moving
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How is and anticyclone in winter?
low temperatures during day , clear skies + sunny weather . Cold at night = no cloud cover. Moisture condenses = fog
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How is and anticyclone in Summer?
heat wave weather - warm , sunny , cloudless + cold at night
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Describe the characteristics of a depression.
low pressure - air is rising + cools + condenses= clouds. Wind= strong. Isobars = close + ANTI-CLOCKWISE direction. Move quick = 24-48 hrs
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What is the likely passage of weather of a depression?
warm front approaches = clouds + rain. Between fronts = warm+ drizzle. Cold front = air rises = heavy rain +clouds. after clouds break up = few showers.
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What is a weather synoptic chart?
charts/ maps of weather at a particular time. DATE + TIM of recording = important as this affects weather.
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What is a weather front?
ONLY IN DEPRESSIONS. BOUNDARIES BETWEEN AIR MASSES. COLD, WARM OR OCCLUDED
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What is the difference between the green house effect and global warming?
greenhouse effect= natural process where our atmosphere traps heat from escaping into space. Some greenhouse gasses help to fry out this heat . Global warming is the warming up of the world on a global scale
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Describe the natural changes to the climate and global warming.
These aew climate changes the world goes through combined with volcanic activity releasing dust etc in the atkmosphere shutting out sunlight.
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Describe the human activity that causes global warming
Burning fossil fuels into atmosphere = bigger blanket retaining escaping heat
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What are the main effects of global warming ?
1) Ice caps melt= rising temp= sea levels rise= floods 2)sea = warm = expand = flood
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What strategies can be put in place to deal with climate change ?
1) KYOTO AGREEMENT 1997 2) Use alternative sources of energy- Bessy bell windfarm 3) reduce car use - FRIEBURG IN GERMANY 4) Reduce deforestaion
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Why would solving climate change have probelsm on an international scale?
Nations don't always agree. Rich nations do not want to change their lifestyles. LEDC's = try to catch up .
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Card 2

Front

How do you measure Air pressure and what are the units?

Back

Barometer + millibars

Card 3

Front

How do you measure temperature and what are the units?

Back

Preview of the front of card 3

Card 4

Front

How do you measure precipitation and what are the units?

Back

Preview of the front of card 4

Card 5

Front

How do you measure wind speed and what are the units?

Back

Preview of the front of card 5
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