C11 Earths Atmosphere
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What sort of geological activity formed the early atmosphere
Volcanic
What gas do scientists think made up much of the early atmosphere
Carbon dioxide
What addition gases were probably present in the earth early atmosphere
Water vapour,nitrogen,methane and ammonia
What is the chemical process that algae used to generate oxygen
Photosynthesis
How did the earths first oceans form
Condensation of water vapour
Which gas makes up most of the atmosphere today
Nitogen
Which gas makes up approximately 1/5 of the atmosphere today
Oxygen
What role did plants play in reducing carbon dioxide levels
Photosynthesis
What type of rocks do the skeletons and shells of marine creatures form
Sedimentary rocks
What is the main compound present in these rocks
Calcium carbonate
How did the Earths oceans help to reduce the carbon dioxide levels
Dissolved the carbon dioxide
What the 3 key greenhouse gases in the atmosphere
Carbon dioxide,water vapour, methane
What human activity leads to increased amounts of greenhouse gases
Burning fuels, raising cattle, growing rice, using landfills
What are two common carbon sinks
Tropical rainforest & oceans
How are scientists able to determine the composition of the atmosphere in the distant past
Ice core analysis
What do we call the total carbon dioxide released by a product over it’s life cycle
Carbon footprint
What the general impact of an increase in greenhouse gases
Climate change
What are some specific effects of climate change
Rising sea-levels, food insecurity, damage to ecosystem
What name in giving’carbon neutral’ fuels
Biofuels
What the toxic gas produced when fossil fuels go through incomplete combustion
Carbon monoxide
What is the pollutant side effect of sulfur dioxide in the atmosphere
Acid rain
What type of pollution can diesel produce
Particulates
What are some of the symptoms of CO poisoning
Drowsy, Pass Out
Write the equation for photosynthesis
Light Water + CO2 —> O2 + glucose