1. Starter
Which is an effect of lower levels of solar radiation striking Earth?
increased incidences of skin cancer
decreased rates of photosynthesis
increased phytoplankton activity
decreased carbon dioxide levels

2. Global Warming

3. Essential Question:
How does the greenhouse effect relate to global warming?

4. Greenhouse Effect
Water vapor and carbon dioxide – major greenhouse gases
Trap heat in our atmosphere
Without the greenhouse gases, Earth would be too cold to live on.

5. Greenhouse Effect Humans can impact the greenhouse effect
Burning of fossil fuels releases CO2 into the atmosphere
Increasing the amount of carbon dioxide which causes temperatures to increase beyond the normal amounts

6. Global Warming
Global warming – increase in global temperatures from an increase in carbon dioxide
Might lead to the melting of the glaciers
Would raise sea level 60 meters and would flood coastal towns

7. Global Warming
Global Warming could potentially have an affect on the biosphere
Glaciers melt Destroys polar bears habitats
Sea level rises

10. Global Warming National Geographic video

11. Measuring Global Warming
At the start of the Industrial Revolution – temperatures began to rise and have continued

12. Measuring Global Warming
Arguments that skeptics of global warming put forth:
Before humans the Earth went through climate shifts
There is not enough evidence
2009-Global warming activists knowingly submitted false data to forward their agenda

13. Climate Change TED talk

14. Climate Change Discussion

15. Exit Slip
Urban City X has been referred to as an urban heat island because it tends to be warmer than the surrounding rural areas. The report below lists changes that have occurred in one year in Urban City X.
Report for Urban City X:
Eight roads were repaved.
The population increased by 20%.
Public transportation increased by 5%.
Four new apartment complexes were built.
Plans were drafted to build a local park.
A meeting was held about alternative energy sources.
What is the main cause of Urban City X being an urban heat island?
A the planting of trees and other vegetation
B the building of rooftop gardens
C the installation of solar panels
D the construction of parking areas and road systems