address: http://www.youthxchange.net/main/tp_global_warming.asp title: GLOBAL WARMING? NO THANKS!

The Earth gets most of its energy from the sun in the form of … carbon dioxidetest tip 1 infra-red radiationtest tip 2 visible radiationtest tip 3 The sun's energy warms the earth and the earth emits … infra-red radiation carbon dioxide water What is the earth's average temperature? 4.4°C (40°F) 11.7°C (53°F) 15°C (59°F) 19.4°C (67°F) The temperature on the earth has gone up by how much over the last 100 years? by about 5°C by about 50°C by about 0.6°C The greenhouse gases in the atmosphere act like what part of the greenhouse? the door the glass the frame Which one of these is NOT a greenhouse gas? water vapour carbon dioxide (CO2) methane sulphur dioxide (SO2) nitrous oxide (N2O) ozone (O3) hydro-fluorocarbons (HFCs) perfluoro-carbons (PFCs) sulphur hexafluoride (SF6) What is the most abundant greenhouse gas? carbon dioxide methane water vapour ozone Places on earth where carbon dioxide is produced and removed are called: springs and drains sources and sinks reservoirs and holes What is the most common greenhouse gas emitted by human activity? carbon dioxide sulphur hexafluoride methane water vapour How has the concentration of carbon dioxide in the atmosphere changed over the last 100 years? it has gone down by a third it has gone up by a third it has stayed the same How many tons of greenhouse gases does each person (on average) emit per year in the USA? 3.5 tons 6.6 tons 9.5 tons By the year 2100, global temperature is expected to increase by… another 0.5°C about 1°C 1.4 to 5.8°C The Kyoto Protocol will commit the developed countries to reducing their collective emissions (from 1990 levels in the commitment period 2008-2012) by… 2% at least 5% 8% To reduce global warming you need to… save energy by having lots of little rests save energy by getting a lift to school save energy by using less electricity, gas and petrol Since 1950, global fossil fuel use has expanded by more than 3 and 1/2 times. As a consequence, nowadays human-made CO2 emissions account for more than… 40% 60% 80% If global greenhouse gas emissions are not reduced, by 2100 sea levels are expected to rise by… 3-15 cm 5-42 cm 9-88 cm By 2050, global warming will significantly increase the risk of extinction of terrestrial plant and animal species by… 10% up to 37% up to 42% Decreased availability of water as a result of climate change could affect populations in the subtropics where water is already scarce. Currently about 1.7 billion people live in water stressed countries, and -by 2025- that number is projected to increase to… 2 billion 3 billion 5 billion CO2 emissions: agricultural sources, mainly deforestation and the burning of biomass, are responsible for… 12% 25% 34% The concentration of which greenhouse gas can be reduced by preventing forest depletion? methane carbon dioxide water vapour ozone Recycling 1 tonne of paper saves … 5 average sized trees 15 average sized trees 25 average sized trees CO2 emissions: In Europe, just to make one example, the transport sector is responsible for… 10% 20% 40% One litre of fuel can carry 1 passenger… 48 km by metro 39 km by bus 18 km by private car all of the above The contribution of electricity produced from renewable energy sources to global electricity consumption is projected to increase. But what exactly does ‘renewable sources’ mean? can use coal or gas doesn't use coal or gas relies on nuclear fuels Driven by government policies, falling prices, concerns about climate change, and consumer demand, global solar production is expanding by/a year… 10-15% 15-35% 35-40% On average, producing 1,000 kWh of electricity with solar power reduces emissions by… nearly 2.5 Kg of sulphur dioxide, 1.3 Kg of nitrogen oxides, and more than 200 Kg of carbon dioxide respectively, nearly 3.3 Kg, 1.8 Kg, and more than 320 Kg respectively, nearly 3.6 Kg, 2.3 Kg, and more than 634 Kg According to the WWF, biomass sources could provide 15% of the developed countries’ energy needs by 2020 (compared with just 1% now). This will reduce CO2 emissions by… 1,000 million tons/year the equivalent of the combined annual emissions of Canada and Italy 5-25% of projected fossil fuel emissions Today, a single wind turbine is 100 times more powerful than its equivalent two decades ago. The CO2 emissions related to the manufacture, installation and servicing over the average 20 year lifecycle of a wind turbine are ‘paid back’ after… the first 3 to 6 months of operation the first 6 to 9 months the first year