Geography Flashcards
What are two pieces of evidence used to define the Anthropocene?
Columbia’s exchange theory.
Nuclear weapon testing theory.
What is the Anthropocene?
A time during which humans have substantial impact on our planet.
What is the greenhouse effect?
The way in which heat is trapped close to Earths surface by greenhouse gases
What are the main greenhouse gases?
Carbon dioxide, Methane, nitrous oxide and fluorogases.
What is the enhanced greenhouse effect?
Where extra greenhouse gases in our atmosphere trap too much of the Suns energy.
What is the Colombian exchange Anthropocene?
-New world species ‘maize+potatoes’ brought to the Americas causing a irreversible change in pollen records around the world
-new diseases such as smallpox were also brought over causing 50 million Indigenous Americans to die.
What was the nuclear testing Anthropocene?
Nuclear material enters atmosphere and eventually falls to the ground, increasing worldwide radiation levels affecting bones, tissue of organisms
What percentage of greenhouse gases does carbon dioxide take up?
75%
What is carbon dioxide’s greenhouse strength?
1
Where does carbon dioxide come from?
-deforestation
-burning fossil fuels for electricity
-burning fossil for transport.
What percentage of greenhouse gases does nitrous oxide take up?
6%
What is nitrous oxide’s greenhouse strength?
600
Where does nitrous oxide come from?
-Agriculture
-Burning fossil fuels
What percentage of greenhouse gases does flourogases
2%
What is flourogases greenhouse strength?
10000
