Earth and Atmosphere Flashcards
What are the three green house gases
CO2, H2O and CH4- carbon dioxide, water vapour and methane.
How does the green house effect work
gases in the atmosphere absorb the energy radiated by the sun and store it and keep the earth warm acting like a blanket
What is the main culprits for increasing the greenhouse effect.
The burning of fossil fuels, livestock farming and landfill waste
What are human activities cause the large increase in carbon dioxide levels
cars, urning fossil fuels to make electricity, deforestation and cement production.
Why is evidence from earlier years sometimes questioned for its accuracy
it has been collected from ice cores which have only been collected from one location
What is the total percentage of methane emissions caused by food production
36%
Why does livestock farming produce large amount of methane
because livestock has bacteria in their stomachs to digest tough grass, this cause the production of methane.
What animal produces the most amount of methane
Cows per kilogram at 1.4 kilograms of meat
What is climate change
the increase in temperature and change in weather patterns
What is global warming
increased levels of carbon dioxide and other greenhouse house gases cause global warming.
What are some of the effects of global warming
more storms, coral bleaching, higher sea levels, flooding
what does mitigated mean
reduced
How can we remove CO2
iron seeding, planting more trees, capturing CO2 and planting underground.
What happened about 4 million years ago
the earth cooled which caused the water vapour in the atmosphere to condense and form our oceans
What may of produced the oxygen in our early atmosphere
microorganisms which reacted with iron to form oxides
