Tree rings/Ice Core
How is the growth of tress documented?
By the width of it rings/Tree rings?
What are the four main greenhouse gases ?
Water vapour, carbon dioxide,methane and nitrous oxide.
Who discovered that different gases absorbed infrared radiation.
John Tyndall
Coal, oil and natural gas are all examples of
Fossil fuels
What is climate change?
Long-term change in Earth’s average weather patterns, including temperature, storms, and precipitation.
What are ice cores?
Ice cores are cylindrical samples of ice that are taken from glaciers?
What is the main sources of greenhouse gases?
Carbon dioxide.
How much did the Svante Arrhenius calculated that the world would warmer by:
5C to 6C
The process that releases carbon dioxide to the atmosphere is called?
Carbon sources
What is one way humans contributes to climate change?
Emitting large amounts of greenhouse gases like carbon dioxide and methane.
Burning fossil fuels for energy.
Transportation and industrial processes.
What does thinner rings on a tree mean?
That the trees grew in poor conditions, drought and higher or lower temperatures than normal.
How are greenhouse gases rated?
By finding the Global warming potential.
What century did climatologist saw that the average global temperature was slowly rising.
What is the percentage of trees in Southern Ontario before settlers?
90%
What is global warming?
Observed increase in earth's average annual temperature and it is detected in all regions of earth.
What does thicker rings on a tree mean?
It means that the tree grew in good conditions, enough precipitation and the appropriate temperatures.
What is persistence?
Is the length of time the gas remains in the atmosphere.
They measured the concentrations of different gases in the atmosphere and found:_______
That the Carbon Dioxide and methane levels were increasing.
What do trees and other plant do to get rid of the carbon dioxide in the air?
Photosynthesis
Melting glaciers, rising sea levels, and more extreme weather events are all examples of these.
Effects of climate change?
Why do they take ice core samples?
To study past climate change?
Approximately how many trillion litres are used in one year?
38.5 trillion litres.
Greenhouse gases like carbon dioxide and methane trap the sun’s heat and act like this household item.
Blanket?