The earth's atmosphere Flashcards
what is the percentage of nitrogen in our atmosphere?
80%
What is the percentage of oxygen in our atmosphere
20%
Phase 1
- very volcanic setting
- a lot of carbon dioxide, water
vapour and nitrogen - smaller amounts of methane and
ammonia
how were the oceans formed?
the water vapour condensing
how were seabeds formed?
co2 dissolved into the oceans forming carbon precipitate and become sediments
what are the greenhouse gases
carbon dioxide
methane
water vapour
atmosphere
a layer of gases surrounding the earth that is held in place by gravity
carbon footprints
a measure of the total amount of carbon dioxide and other greenhouse gases released over the full life cycle of something
benefits of keeping track of carbon footprint
- how environmentally damaging they
are - are they worth the cost? - identify the most polluting activity
ways to reduce carbon footprints
- renewable energy
- using less energy when manufacturing
- less waste
- waste often broken down by
decomposers - release methane
- waste often broken down by
- less waste
- government
- new laws
- taxing companies
- carbon capture technology
problems with renewable energy
expensive
economy based on fossil fuels
3 factors when calculating carbon footprint
- how all the raw materials were
sourced - the manufacturing process
- how its disposed of
- total amount of fuel it uses over a
lifetime
Soot effects
- respiratory problems
- smog - global dimming
carbon monoxide effects
- diffuse into our blood meaning
hemoglobin carries less oxygen - fainting
- coma
- death
sulfur dioxide and nitrogen oxide effects
- respiratory problems
- acid rain
- corrode metals
- damaging buildings
- damage plants (soil acidic)
