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What is a natural process that releases CO2?
cellular respiration, forest fire
What is a carbon sink? give an example
absorbs carbon dioxide from the atmosphere and stores it in another form forests/ocean
What happens when clouds form at high altitudes?
then they reflect the Sun’s radiation back out to space --> cooler temperatures
What happens when light hits a surface with low albedo?
light is absorbed, less light reflected
What kind of feedback loop is the albedo effect?
Positive Feedback loop
List 4 greenhouse gases
CO2, CH4, water vapour, Ozone, NO2, CFCs
True or False: Caves, Snow and Coral are good examples of proxy records
False
What information is gathered from ice cores?
GHG from air bubbles, dust/precipitation
What are thin tree rings a sign of?
poor growing conditions
What is a proxy record?
natural data stores that help us determine past climates
Give 2 negative effects from melting glaciers/sea ice
warmer air/ocean, rise sea levels, changes ocean patterns, severe storms
Why is arctic ice so important?
albedo effect, reflects sunlight, keeps earth cooler,
what are the 2 reasons for sea level rising?
melting glaciers, thermal expansion
How are ecosystems affected by changes to the climate
species need to adapt, invasive species, drastic changes limit survival of species
True or False: Changes to regular and severe weather patterns are evidence of climate change
True
What is the anthropogenic greenhouse effect?
increased amount of human-produced greenhouse gases
