Climate Change 1
Climate Change 2
Climate Change 3
Climate Change 4
Climate Change 5
100
How do green house gases work? (How do they trap gases in the atmosphere?
The have a higher resonance due to their chemical composition.
This basically means most is absorbed and re-emitted in all directions by greenhouse gas molecules and clouds.
100
These regions of the Earth that are experiencing the most dramatic changes due to climate change.
What are the polar regions?
100
a change in global or regional climate patterns
What is climate change?
100
Doing this can naturally remove carbon dioxide from the atmosphere.
What are planting trees?
100
Trees absorb carbon dioxide
What is photosynthesis?
200
If the greenhouse effect is natural, then why is today's climate change a bad thing?
Once released into the atmosphere, greenhouse gases remain potent for many years, making it difficult to reverse the process.
200
How much has CO2 in the atmosphere increased since the Industrial Revolution? In the 10,000 years before the Industrial Revolution in 1751, carbon dioxide levels rose less than 1 percent. Since then, they've risen by:
49 percent or 1.5 trillion tons
200
The felling and clearing of forested land by humans
What is deforestation?
200
Oil, coal and gas
What are fossil fuels?
200
Most air pollutants are the result of this.
What is the burning of fossil fuels?
300
One example of a greenhouse gas
What are methane, water vapor, carbon dioxide, nitrous oxide
300
How has the global average temperature changed since the Industrial Revolution?
Warmer by more than 1 degree C (2.1 degrees F)
300
These are three types of greenhouse gases.
What are carbon dioxide, methane, and ozone?
300
Modern instruments have only been around for a little over 100 years. So how do we know what greenhouse gas concentrations (and temperature) were in Earth's past?
Air bubbles trapped in ice cores provide detailed records of what the atmosphere was like in the past.
Examining organisms in marine sediments can tell us what the temperature was like in the past.
Pollen in lake beds shows what plant species have lived there during different times. Different plant populations are associated with different types of climates.
Glacial moraines show when and where previous episodes of glaciers
Tree rings history of drought, fire, and other environmental variations
300
Which country is emitting the most CO2 presently?
China
400
What is the greenhouse effect?
Certain gasses in the atmosphere trap heat and warm the Earth
400
This type of air pollution traps the Sun’s energy in the atmosphere and raises the average global temperature.
What are greenhouse gases?
400
When was the last time in Earth's history that CO2 was as high as it is now?
The last time CO2 was this high was 3 million years ago.
400
Which country has emitted the most CO2 over time? In other words, which nation has the most responsibility for the greenhouse gases that are currently residing in the atmosphere?
The USA has emitted most to date: more than a quarter of all historical CO2: twice that of China which is the second largest contributor. In contrast, most countries across Africa have been responsible for less than 0.01% of all emissions over the last 266 years
400
How long does CO2 remain in the atmosphere?
Carbon dioxide is a different animal, however. Once it's added to the atmosphere, it hangs around, for a long time: between 300 to 1,000 years. Thus, as humans change the atmosphere by emitting carbon dioxide, those changes will endure on the timescale of many human lives.
500
What activities are the largest contributors of greenhouse gases?
transportation
500
The act in cutting down trees and other shrubbery.
What is deforestation?
500
This is the biggest danger posed by global warming to people living in coastal areas.
What is the rising sea level?
500
Name an effect on the ecosystem caused from global climate change.
extinction of plants and animals, death of coral systems, wild fires, drought, flooding, storms, ect.
500
One way humans can change their behavior to minimize climate change.
What is recycle, car pool, unplug devices/lights, eat less animals, shorter showers, public transportation, ect?