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Presentación en Power Point para nivel 3º ESO en inglés
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Atmosphere, weather, climate and living things
Is a layer of gases that surround the Earth and
protect it from solar radiation
It’s divided into layers
It contains gases that are vital for living creatures
It regulates the
temperature
It minimises the impact of
meteorites from outer space
What is weather?
Refers to the state of the atmosphere at a specific time and place.
Meteorology is the scientific study of the weather
Example: Today it’s sunny or tomorrow will be raining
What is climate?
Is the average state of the atmosphere in a region during a long period of time.
Climatology is the scientific study of climate. Example: Mediterranean climate has hot and
dry summers. Is determined by studying several elements:
Temperature Humidity Pressure Winds
1.Temperature:
Is the degree of warmth in the air
Is measured with a thermometer and
expressed in degrees ºC
Is influenced by several factors
Latitude:As we get farther away from parallel zero, temperature decreases. Distancing from parallel zero also creates seasonal differences.
The temperature fails about 0.6 degrees for each 100 metres increase in height
Altitude:
The sea acts as a thermal regulator, it heats up and cools more slowly because the
temperature changes are less extreme on the coast than inland.
Distance from the sea:
The coastal zones exposed to warm or cold currents give rise to higher
or lower temperatures, respectively, than the rest of the regions.
Sea currents:
2. Precipitation:
Is the water that falls from the clouds onto the surface of the
Earth
The amount of water that falls is measured with a pluviometer and is expressed in milimetres
or litres per square metre.
Types of precipitation
3 . Atmospheric pressure:
It is the force caused by the weight of
the air column above
the surface of the Earth
It is measured with a barometer and expressed in
milibars (mb)
Anticyclones are areas where the
pressure is higher than 1013
mb
Depressions are areas where the pressure is lower
than 1013 mb
The lines that connect points with the same pressure are called isobars
4. Wind: Wind is horizontal displacements of air creat
ed by differences in pressure. The
displacements go from high pressure zones to low
pressure zones
Its strength is measured with the anemometer and expressed
in kilometers per hour
Its direction is indicated by a weather vane
Equatorial climate
Humid tropical climate
Monzonic
Hot desert climate
Mediterranean climate
Humid subtropical
Oceanic climate
Continental climate
Mountain climate
Polar climate
Living things
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