C13 The Earth's Atmosphere Flashcards
1
Q
- What gases were released by volcanoes to form the earth’s early atmosphere?
A
- Nitrogen, water vapour, carbon dioxide some ammonia and methane
2
Q
- What happened to the water vapour?
A
- Condensed to form oceans
3
Q
- Why did carbon dioxide levels go down?
A
- Some locked in rocks, some dissolved in oceans, some taken in by plants during photosynthesis
4
Q
- What was the first organism to use the carbon dioxide?
A
- Algae
5
Q
- Why did the oxygen levels increase?
A
- Released in photosynthesis
6
Q
- What type of radiation does the earth emit when the sun warms it up?
A
- Infra red radiation
7
Q
- What are the three main greenhouse gases?
A
- Carbon dioxide and methane and water
8
Q
- What are two main things that humans do that increase the levels of greenhouse gases?
A
- Burn fossil fuels, farm animals
9
Q
- What affects could climate change have on our weather?
A
- Increased risk of flooding and drought, extreme weather events e.g. hurricanes
10
Q
- What is carbon footprint?
A
- Total amount of carbon dioxide and other greenhouse gases emitted over the lifetime of a product or event.
11
Q
- How can we reduce our carbon footprint?
A
- Reducing emissions of carbon dioxide and methane e.g. burn less fossil fuels (use alternatives), use more energy efficient devices, eat less meat
12
Q
- What gas is made when sulphur impurities in coal burn?
A
- Sulphur dioxide
13
Q
- What does sulphur dioxide cause?
A
- Acid rain
14
Q
- What are the products of incomplete combustion?
A
- Carbon monoxide and water, solid carbon
15
Q
- What gas is made when the nitrogen in the air burns at the high temperatures inside car engines?
A
- Nitrous oxides
