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The greenhouse effect is caused by…
Greenhouse gases in the lower atmosphere absorbing solar radiation
Greenhouse gases in the lower atmosphere absorbing radiation from the Earth's surface, and preventing much of it escaping into space
Too much heat in the atmosphere
Too much sunshine reaching Earth
Which of these natural events affect the climate?
Thawing permafrost
The path of the Earth around the sun
Volcanic eruptions
Carbon dioxide is the most abundant greenhouse gas in the atmosphere.
Carbon dioxide Trichlorofluoromethane Nitrous oxide Methane( Carbon dioxide, Trichlorofluoromethane, Nitrous oxide, Methane ) was not present in the atmosphere in pre-industrial times (before 1750)
Which of the following changes in climate has NOT already occurred?
0.74°C increase in average global temperature over the last century
0.17m rise in sea level during the 20th century
A decrease in the sea ice around Antarctica
Fewer cold days and frosts, and more frequent heatwaves over the last 50 years
❌ has the highest per capita carbon dioxide emissions.
Energy supply contributes the most to carbon emissions globally.
In research published in Naturescientists claim we have a good chance of stabilising global warming below 2°C if the world's total carbon dioxide emissions from 2000 to 2050 don't exceed 1,000 billion tonnes. How much carbon dioxide did we emit between 2000 and 2006?
1,000 billion tonnes
234 billion tonnes
146 billion tonne
94 billion tonnes
Australia emitted 597 million tonnes of greenhouse gas in 2007. We could cut up to 110 million tonnes off our annual emissions by greater efficiency in industry and more energy efficient .
Which of the following is NOT expected to happen in Australia as a result of global warming?
Central Australia will become drier and have more frequent and severe droughts
Perth will have between 29 to 38 days above 35°C a year by 2030
Canberra will have between 26 and 29 days of extreme fire danger by 2020
Tasmania will become a tropical island
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