Weather and climate

What is weather?

• Weather over 30 years

• The average weather for Guangzhou in March

• The day-to-day condition of the atmosphere (wind, temperature, rainfall) at a specific point in time. It is constantly changing.

• The atmosphere

What is climate?

• The changing weather on a day-by-day basis

• The weather forecast over the next 3 weeks

• Wind, rain, temperature

• The average conditions for a region, over a long period of time.

It usually snows in Moscow in January. Is this weather or climate?

• Weather

• Climate

Today it is very windy. Is this weather or climate?

• Weather

• Climate

Guangzhou usually sees peak humidity for the year in June. Weather or climate?

• Weather

• Climate

What causes the weather?

• The Earth

• Wind

• Atmospheric pressure

• The Sun

What does the sun heat?

• The Earth

• The atmosphere

• The wind

• The clouds

Once the sun has heated the Earth. What in turn does the Earth heat?

• The air

• The clouds

• The rain

• The atmosphere

As hot air heats it...

• falls

• rises

The sun’s heat also causes water to evaporate, giving...

• Evaportation

• Gases

• Water vapour

• Clouds