Poor Bears
How are polar bears being threatened as a result of Climate Change?
Loss of sea ice which is used as a platform for hunting for seals.
How does NASA study Earths current climate?
What affect will increasing levels of CO2 have on temperature trends?
Increase global average temperatures due to the greenhouse effect.
What is the primary use for fossil fuels currently?
To produce electricity.
Which organisms in a food chain are most at when food chains are disrupted?
The ones at the top or the top level consumers.
True or false. Earth has always had a consistent climate.
False. Earths climate is always changing.
How is the total amount of Carbon in Earth changing as a result of Climate Change?
It is not. The amount of Carbon being released from the Geosphere is increasing, but carbon is not being created.
What is causing oceans to become more acidic over the past few hundred years?
Increased CO2 concentrations in the atmosphere leading to more CO2 being absorbed by the oceans
Why are sea levels rising?
Polar ice is melting due to increased average global temperatures
True or false. We are currently experiencing the warmest period of Earths history since the beginning of the Paleozoic eon.
False. We are currently at ~60*F average which is cool compared to much of Earths history.
Plants and trees remove carbon dioxide from the atmosphere using what process?
Deforestation in places like the Amazon Jungle is done for what purpose/s?
Agricultural expansion, mining, logging
According to NASA, the arctic sea has lost how much of its thickness since 1958? ¼,1/3,1/2, or 2/3
2/3
How is it possible for scientists to study Earths climate as far back as a million years ago?
Which is the most effective heat absorbing greenhouse gas? CO2, Methane, water vapor, or CFC’s?
Methane is a much more powerful heat absorber although it is being emitted much less than CO2.
How could food sources be impacted by climate change?
Decreased farming production due to droughts and changes in supply chains.
What affect will melting of polar ice have on temperature trends?
Increase temperature since ice has a lower albedo than water
What period of Earths history has contained the highest levels of carbon dioxide in the atmosphere?
Current day.
What is the approximate concentration of CO2 in the atmosphere in parts per million?
418 ppm
Is it possible for the sun to produce more or less energy and for that to affect temperatures on Earth?
Yes. However the sun is currently decreasing in energy production.