4.3 Study guide Flashcards
(8 cards)
Def of greenhouse effect
The trapping of the suns heat in the atmosphere.
Def of greenhouse gases
Gases in the atmosphere that rise the Earth’s temperature.
Def of positive feedback loop
The output of a system amplifies the system
Def of negative feedback loop
A change in a given direction causes a change in the opposite direction.
What do greenhouses do
They keep the energy and heat from the sun locked in the greenhouse.
Why the greenhouse effect is important
It helps keep our planet at a suitable temperature.
How humans have affected the greenhouse effect
Burning fossil fuels, cutting down trees, fertilization.
What ice cores tell us about the patterns of CO2 and temperature for the past 800,000 years
carbon dioxide levels and temperature have fluctuated in the cycles. With higher CO2 levels during warmer glacial periods and lower CO2 levels during colder glacial periods. The ice core can tell us how much snow was being produced by how thick the layer is.
