2. Meteorology (weather and climate) Flashcards

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1
Q

Air Mass (2)

A

A large body of air (1) with consistent moisture and temperature characteristics (1).

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2
Q

Air Pressure (2)

A

The weight of the air (1), measured in millibars (1).

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3
Q

Anticyclone (3)

A

A high pressure weather system associated (1) with still and cold weather in winter (1) and still and warm weather in summer (1).

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4
Q

Atmosphere (1)

A

The air surrounding the Earth (1).

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5
Q

Climate (2)

A

The average weather (1) measured over a number of years (1).

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6
Q

Condensation (2)

A

Water droplets that are produced (1) when water vapour is cooled and forms clouds (1).

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7
Q

Convenctional Rainfall (2)

A

Rain that is produced (1) when air rises as the ground is heated by the sun (1).

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8
Q

Depression (2)

A

A low pressure weather system (1) associated with wet and windy weather throughout the year (1).

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9
Q

Drought (1)

A

Droughts occur when there is abnormally low rainfall for an extended period of time (1).

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10
Q

Evaporation (2)

A

When water is turned from a liquid into a gas (1) due to heating by the Sun (1).

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11
Q

Fog (1)

A

Cloud at ground level (1).

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12
Q

Front (2)

A

The divide between warm and cold air masses (1) associated with rainfall (1).

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13
Q

Frontal Rainfall (2)

A

Rain that is produced (1) when warm air is forced to rise of cold air at a front (1).

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14
Q

Humidity (1)

A

The moisture content of the air (1).

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15
Q

Isotherm (1)

A

A line on a map joining places of the same temperature (1).

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16
Q

Jet stream (2)

A

High winds in the atmosphere (1) which influence our weather systems (1).

17
Q

Microclimate (1)

A

The climate of a specific and small area (1).

18
Q

North Atlantic Drift (3)

A

The warm flow of water (1) that comes from the Gulf of Mexico (1) and warms the west coast of Britain in winter (1).

19
Q

Precipitation (7)

A

Water droplets falling to the ground (1) once the clouds have cooled to a point (1) where they can non longer hold their moisture (1). Precipitation can take the form of rain (1), snow (1), sleet (1) and hail (1).

20
Q

Prevailing Wind (2)

A

A wind from the predominant or most usual direction (1). The prevailing wind in Britain is from the south-west (1).

21
Q

Relief Rainfall (2)

A

Rain caused by air being forced to rise rapidly over hills and mountains (1) leading to rapid condensation and precipitation (1).

22
Q

How are Humans affected by weather and climate?

A

Food and water supply- reservoirs can be used to store water in areas
where there may not be enough

Housing- Cold climates require insulation, whilst warm climates require light colours and ventilation.

Travel and tourism- Some areas of the world have more predictable
weather.

Electricity- Reliability on renewable energy

Extreme weather- impacts on
peoples’ lives causing death and injury.

Climate change- can cause rising sea levels

23
Q

What are Earth’s climatic zones?

A
  1. Polar and sub-polar
  2. Temperate
  3. Arid
  4. Tropical
  5. Mountainous
  6. Mediterranean
24
Q

What is a microclimate?

A

A microclimate is the local climate of a small area.

25
Q

Where can you find microclimates?

A

In your garden, on hills and valleys, at the coast and urban areas (urban heat islands).

26
Q

Do both natural and human factors affect microclimates?

A

Yes

27
Q

What are the factors that can affect microclimates?

A
  1. Physical features (trees, lakes, rivers, hills)
  2. Aspect (Direction in which a place is facing in relation to the sun)
  3. Buildings (Offer shelter, but can give off heat too)
  4. Surface (Influences air temperature - artificial surfaces warm up faster than natural ones)
  5. Shelter (buildings, natural features provide shelter and reduce wind making it feel warmer.
28
Q

What climate does the British Isles have?

A

a temperate oceanic climate.

29
Q

What are the factors affecting temperature?

A
  1. Latitude
  2. Altitude
  3. Distance from the sea
    (The land warms up and cools down more quickly than the sea. Places further inland become hotter in summer and colder in winter.)
  4. Ocean Currents
  5. Prevailing wind
30
Q

What are the 3 types of rainfall?

A
31
Q

What are the air masses affecting the UK?

A
32
Q

What are the 4 air masses?

A

Maritime- wet
Continental- dry
Polar/Arctic- cold
Tropical- warm

33
Q

What is the Jet Stream?

A

Fast flowing air current that separates warm tropical air from cold polar air, migrates N/S over
the UK.

34
Q

What is the climate of the British Isles?

(name the state of the summers, winters, range and rainfall for the NE, E, SW and NW regions of the UK)

A
35
Q

Droughts and Wildfires examples (4)

A

Droughts can last from weeks to months and even years. (1) From September 2019-January 2020 Australia experienced its worst
wildfires, coming at the end of 3 years of drought. (1) Australia also recorded its highest ever temperature of 41.9oC in December 2019. (1) Extreme weather events like droughts, wildfires and hurricanes are increasing in number and severity due to global warming. (1)

36
Q

How are low pressure storms formed? List an example. (5)

A

Tropical storms begin with low pressure, where warm air rises and cools over the warm ocean, usually in summer or autumn. (1) Tropical cyclones travel across the ocean, blown by the prevailing wind. (1) When a cyclone reaches land it is no longer fuelled by heat and moisture from the ocean (1), so it loses power and weakens. (1)
An example is Hurricane Maria, which hit Dominica and Puerto Rico in 2017. (1)