1、Audio-Visual Classes,Unit: 5 Global Warning,Background Notes,1- Global WarmingIt means the temperature of the Earth is getting higher than the average. In other words, the planet including; atmosphere, oceans and landmasses, is warming, and the main reason for this warming is the burning of the foss
2、il fuels. 2- Greenhouse GasGreenhouse gases are components of the atmosphere such as ; water vapor( H2O), carbon dioxide (CO2), methane(CH4), and ozone(O3). Some greenhouse gases occur naturally in the atmosphere, while others result from human activities. Certain human activities increase some of t
3、hese gases into the atmosphere specially CO, CO2 ( carbon monoxide, carbon dioxide).,3- GreenlandAn island of Denmark located in the north of the Atlantic ocean and northwest of Canada. It is the largest island in the world, the total area of Greenland is about 2.17 million square kilometers and 1.8
4、 of it is ice cap.4- Canary in the MineCoal miners used to take canary birds into the mines as a decoy ( a sign for coming dangers). If the canary died, then the miners realized that they were in a region of danger and they might also die of the poisonous gases under the ground.,5- North poleThe Nor
5、th Pole is about (725 km) north of Greenland in the middle of the Arctic Ocean - the sea there has a depth of (4087 meters). Most of the time, the sea ice covers the North Pole but recently, water has been sighted at the exact location of the pole. If youre standing at the North Pole, all points are
6、 south of you (east and west have no bearing). The North Pole experiences six months of daylight and six months of darkness.,North Pole,Penguins,Polar Bears,Pre-listening Questions,Discuss the following questions; 1- What would happen if the temperature of the Earth would be increasing in the next 1
7、0 years?2- are there any signs of temperature changes you have noticed in the last few years ?3- do you think Global Warming is a real thread to our planet ? What do you suggest to save the world if there is a danger?,While Listening,TASK 11- D- the role of humans in global worming 2- A- it can be s
8、topped if we can act now 3- A- provide conclusive evidence that humans should be held accountable 4- B- Extinction of all arctic species 5- D- Polar bears 6- C- is not ready to tackle 7- B- concerned,TASK 2 Episode 11- F 2- T 3- T 4- T 5- T 6- F ,Episode 2 1- naturally changing climate2- mans doing3
9、- expeditions4- ice cores5- fingerprints6- burning fossil fuels7- carbon dioxide8- thousands9- warm,Episode 31- worse hurricanes in the pacific2- more cyclones in the pacific3- heat waves in Europe4- worse hurricanes in the US.5- more thunder storms in summer6- less rainfall in winter7- high rainfal
10、l in coastal regions,Episode 4 1- land of the great bear2- polar bears health3- a tranquillizer dart4- Bear population there is the healthiest5- changes is the bears fat, dimensions and teeth6- they can only hunt on the ice,Episode 5 1- they say theyre no more reliable climate change projections2- they made science as precise as it is today3- the US cant flip its energy use overnight and its economy might get hurt4- his job is to tell the government exactly what he knows scientifically,
