Weather Climate and Climate Change Climate graphs Key

Weather, Climate and Climate Change. Climate graphs Key Words/ Definitions Physical- Made by natural processes. Human- made by people. Environmental- a physical feature which ahs been changed by people. Weather- conditions in the atmosphere over a short period- a day. A week. Climate- average weather conditions over a long period of time, a year, 10 years etc. YOU SHOULD REVISE TYPES AND NAMES OF TWO TYPES OF PRESSURE IN THE UK. http: //www. metoffice. gov. uk/learning/learn -about-the-weather/how-weatherworks/highs-and-lows/pressure Cyclone- hot air rises and causes low pressure, often stormy wet and windy. Anticyclone- cold air sinks and warms as it reaches earths surface, often calm and dry/ warm weather. Location- where something can be found Place- what a n area is like, it’s key characteristics YOU WILL NEED TO LEARN WHAT THE LINE AND BAR GRAPH MEAN. YOU MAY HAVE TO APPLY THIS KNOWLEDGE TO ANOTHER COUNTRY TOO. Microclimate- the average weather in a small place World wide weather is influenced by latitude, relief ( height of land) air masses and ocean currents as well as microclimate factors such as aspect, vegetation, shelter, wind direction, wind speed tec. See http: //www. bbc. co. uk/schools/gcsebitesize/geography/weather_climate/cl imate_rev 3. shtml Climate Change You need to be able to explain how climate has changed over the Earth’s history. The graph below shows the change over the last three million years. The enhanced greenhouse effect, sometimes referred to as climate change or global warming, is the impact on the climate from the additional heat retained due to the increased amounts of carbon dioxide and other greenhouse gases that humans have released into the earths atmosphere since the industrial revolution. More support for your revision is available at… BBC Bitesize KS 3 revision Seneca Learning – KS 3 Geography (revision quizzes organised by topic ) Climate has changed historically because of Volcanic eruptions – Major volcanic eruptions lead to a brief period of global cooling, due to ash and dust being ejected high into the atmosphere, blanketing the earth. The earth’s orbit changing – Changes in how the Earth moves around the Sun are believed to cause ice ages. This affects how much sunlight is received Asteroid collisions – 1 km sized asteroids strike the earth once every 500, 000 years. An impact of this size would blast millions of tonnes of ash & dust into the atmosphere. This would block sunlight and cool the climate. Sunspots - The Sun’s output is not constant. Cycles have been detected that reduce or increase the amount of solar energy.