1、Weather and Climate,Weather and Climate,Weather is made up of atmospheric conditions during a few hours or days. The weather maybe rainy , sunny, snowy , cloudy on a certain day.,点击添加文本,点击添加文本,点击添加文本,点击添加文本,Clouds can greatly affect the temperature of the earths surface. When there are many clouds i
2、n the sky ,all of the suns rays cannot reach the earth .The cloudy day ,then, will be cooler than the cloudless day.,Wind is caused by air moving between cold and warm regions. The warm air around the equator rises,while the cold air near the poles sinks to the ground.When the surface pressure great
3、er at the poles, and sends air toward the equator.,The face under the strong wind,These clouds will contain drops of water at temperature above freezing , or ice crystals at temperatures below freezing.,Fog is made up of small water droplets or ice crystals floating in the air of water vapor condens
4、ation, the mist generated in the surface layer of the atmosphere.,Land and ocean surface water evaporates into water vapor, water vapor rises to a certain height after encounter cold into droplets. These small water droplets formed cloud, they collide with each other in the clouds, merged into big o
5、nes. When it is big enough to hold not to live, air from the cloud went down, and formed the rain.,Cumulonimbus clouds as the change of temperature and air flow is constantly movement, formed a charged clouds, When the clouds with positively charged and negatively charged cloud collide, and then for
6、med a lightning,Climate is the combination of temperature ,moisture ,and sunshine at a place over a period of many years .,The causes of different climates,Latitude makes climates colder toward the north and south poles than at the tropics near the equator.,The causes of different climates,Altitude
7、affects climate by lowering temperatures as the height above sea level increases .,The causes of different climates,Land and water bodies influence climate.,The causes of different climates,Ocean currents affect climate in many parts of the world.,The causes of different climates,Winds carry heat an
8、d moisture and therefore affect climate .,Climate and people,The amount and kind of clothing people wear is determined partly by climate.,Climate and people,People build houses mainly for shelter from the climatic elements.,Climate and people,Climate affects the food supply by setting limits for profitable production of crops and animals.,Climate and people,Climate has an influence on what sports we are doing.,Thanks for listening!,
