The main features of climate

2. THE MAIN FEATURES OF CLIMATE • - There are three main features: temperatures, wind and precipitation.

1. TEMPERATURE: -

Is how warmer the air is.

Instrument: we measure it with thermometer.

It ‘s expressed in degrees Celsius (ºC) We can show it it on a map through isotherms ISOTHERMS: Lines that connect places of equal temperature.

2. THE MAIN FEATURES OF CLIMATE 2. WIND: -

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Is the movement of the air masses.

It’s caused by air currents created in zones of different atmospheric pressure.

Instruments: - Anemometer:we use to measure the speed of the wind.

- Weather vane: we use to show the direction of wind.

Types of winds (3) - a) seasonal winds: Monsoons - In Asia - It carries heavy rain - It blow in summer from the Indian ocean to the continent.

- In winter, monsoon, blows from land back to the ocean.

-b) wind s that always blow in the same direction: trade winds (vientos alisios) - c) Sea breezes: they change direction continually

2. THE MAIN FEATURES OF CLIMATE 3. PRECIPITATION: - Is the amount of water that falls in a place - It can be in 2 forms : liquid (rain) or solid (hail and snow).

- It is caused by condensation of water vapour which form water drops hat falls because of the gravity.

- instrument: pluviometer or rain gauge: it records the amount of water that falls during a period of time.

- It express in millimitres (mm) - We can show on a map through isohyets.

- Isohyets: lines that connect places with the same amount of precipitation.

- - precipitation is unevely distributed over the world.

2. GREENHOUSE EFFECT - Sun rays heat the Earth - A mixture of water vapour and carbon dioxide prevent (evita) that the heat leaves.

- This proccess is called Greenhouse effect and allow life exists in Earth - Pollution: - has increased tha amoun of carbon dioxide in th e atmosphere.

- This produce that planet gets warmer and it’s dangerous to plants and animals.