weather

• what is weather?


   temperature, cloud cover, wind speed, wind direction and its pressure
• what is latitude?


  distance from the equator
• what is altitude?


  height above sea level
• what is aspect?


  direction a slope faces
• what is coastal influence?


  Distance from the Sea
• what is urban area?


  city or countryside
• how is relief rain caused?

  clouds arrive in mountainous areas, the air that carries them is forced up, causing the cloud to rise. Ths triggers rainfall in the cloud as the cloud cools,
• how is frontal rainfall caused?


  The rain forms over oceans where warm air masses meet colder ones. The warm air rises condensing as it does so to form clouds. These fronts then travel east towards the uk west to be wetter
• what is convectional rain?

  forms over large bodies of water and is caused by rapidly rising air which condensed into very large clouds called cumulonimbus clouds.
• what is air masses?

  An air mass is a large body of air in which the temperature, humidity and pressure is very similar across it.
• what is the source and properties of polar maritime air mass?


  source: greenland

  properties:wet and cold

  weather:cold and showers
• what is the source and properties of arctic maritime air mass?


  source: Arctic

  properties: wet and cold

  weather: snow in winter
• what is the source and properties of arctic continental air mass?


  source: central europe

  properties: cold in winter hot in summer

  weather: snow in winter dry in summer
• what is the source and properties of tropical continental air mass?


  source: north Africa

  properties: hot and dry

  weather: hot in summer
• what is the source and properties of tropical maritime air mass?


  properties: atlantic

  source: warm and moist

  weather: cloudy, rain, mild
• what is the impact from a Polar Continental Air Mass

  • people have to heat their homes more which costs them a lot of money making them poorer.
  • people couldn't run water because the water pipes broke and freezed.
  • people couldn't go to school so people was loosing education
  • hill sheep farmers had to bring their sheep inside because it was to cold so had to pay for food 
• what is the impacts of Tropical Continental Air Mass in Summer?

  • Very Hot, Very Dry, No wind
  • tourist industry benefit bcs more people want to go on holiday
  • heat will improve people's health bcs more people will go outside
  • The solar energy industry would benefit from the heat bcs there would be more sun to power peoples homes using solar panels. 
  • The heat cause land to become dry and crops to die so there would be less food in the super markets 
  • The heat related deaths would rise bcs it is too hot and more people will get sunstroke meaning that hospitals will be very busy.
• what is the impact of Tropical Maritime Air Mass in Winter?

  • Very Wet (possible snow), Cold, High Winds
  • The wind industry would benefit from the strong winds because the stronger winds means that the wind turbines would produce more energy
  • The snow sport industry would benefit from 
• what is air preasure?

  the weight of air molecules pushing down on the surface of the Earth.  It is measured in MILLIBARS.
• what is high preasure?

   occurs when there are a lot of air molecules pushing down on the surface of the Earth.
• what is low pressure?


  occurs when there are fewer air molecules pushing down on the surface of the Earth.
• in low pressure is the air rising or sinking?

  rising - when it is less dense this is because it is heated by warmer temperatures.
• in high pressure in air rising or sinking?

  sinking - Air Sinks when it is more dense because it is colder due to colder temperatures
• in low pressure is there many clouds?

  many clouds -

  Clouds form because warmer air is rising leading to more evaporation meaning water rises to form clouds due to condensation of the water high up.
• are there many clouds in high preassure?

  Few clouds

  few clouds in the sky because the air is sinking which means clouds do not form.
• in low pressure is the winds strong or weak?

  Strong Winds

  Winds are strong because air is moving towards this area.
• in high pressure is the winds strong or weak?

  Weak Winds

  Winds are weak because air is moving away from this area.
• in low pressure what is teh temperature like?

  Cool or Cold

  Summer temperature will be cooler because the clouds that come with Low Pressure block the sun.In Winter temperature will be warmer because the clouds that come with Low Pressure trap warmer air (especially at night)
• in high pressure what is teh temperature like?

  Warm or Very Cold

  In Summer the temperature will be hotter because the lack of clouds in High Pressure areas means no sunlight is blocked, thus causing more heat.

  In Winter the temperature will be very low because the lack of clouds in High Pressure means all heat escapes (especially at night) causing the temperature to fall
• what is the weight of the air going to be in low preasure?

  Less dense air

  The weight of the air is likely to be less dense, below 1013mb because the air is rising (there is less air on the surface of the Earth in Low Pressure areas).
• what is the weight of the air going to be in high preasure?

  Dense air

  The weight of the air is likely to be denser, over 1013mb because the air is sinking (there is more air on the surface of the earth in High Pressure areas).
• what happen when isobars are close together?

  • WIND SPEED is STRONG - This is always seen in areas of Low Pressure.
• what happen when isobars are far apart?

  • WEAK - This is always seen in area of High Pressure.
• what direction does the wind travel in areas of low preasure?

  anti-clockwise
• what direction does the wind travel in areas of high pressure?

  clockwise