2. Bell Ringer:
Please take out a copy of the 15.2 Thermal Energy Review Sheet from the blue tub.
Spend 5 minutes checking yourself for understanding from yesterday’s lesson.
Glue it in to your IAN when done, and title your next page, 2/24: Greenhouse vs. global warming

3. Weather Factors

4. Did you know?
Because Venus is closer to the sun, it gets more thermal energy. Ordinary light can penetrate the atmosphere and hit it’s surface.
The surface heats, just like our planet and radiates heat back into the atmosphere. Its surface becomes up to 460degrees C – hot enough to melt lead.
This trapping of heat in the atmosphere is called the greenhouse effect.

5. Greenhouse Effect! Objectives:
Discover/Illustrate what the greenhouse effect is, including how gases in Earth’s atmosphere act like a giant greenhouse to create the effect on a global scale.
Research why the greenhouse effect is important to keeping us alive on Earth! Plus, see how the greenhouse effect relates to global warming, and do we need to prevent a global meltdown! 

6. Gases absorb the heat and act as a “blanket” to keep Earth warm.
Some greenhouse gases: water, methane, carbon dioxide.
The gases function like the glass walls and roof of a greenhouse, which allow solar energy to enter but prevent thermal energy from escaping.
Greenhouse Effect

7. http://my. hrw. com/sh2/sh07_10/student/flash/visual_concepts/80242

8. Runaway Greenhouse Effect: Global Warming?
Many scientists have become concerned about data that show that average global temperatures have increased in the past 100 years.
Such an increase in average global temperatures is called 7) global warming. 
Some scientists have hypothesized that an increase of greenhouse gases in the atmosphere may be the cause of this warming trend. Greenhouse gases absorb thermal energy in the atmosphere = higher temps, not convection

9. Runaway Greenhouse Effect
In your IAN, please copy!

10. The Greenhouse Effect Global Warming gases (CO2 and
water vapor) absorb
thermal energy and
radiate it back to
Earth
a process that
reminds us of an
actual greenhouse
an increase in
average global
temperatures
greenhouse gases
in the atmosphere
VS.

11. Global Warming Causes Natural: Volcanoes Solar flares Cycle Orbit
Cows
Forest fires
Methane release in the arctic tundra

12. Manmade Causes: Industry Deforestation Cars Fossil fuels
Wars Let’s Review!
Heat/AC BrainPop Greenhouse
Arms race
Nuclear waste
Coal burning
Electricity
Land fills
Acid rain

13. What’s Next? You Decide!
Question: Is Global Warming real? Is it a natural event or man made? Is it natural and people are making it worse?
Global Warming Brainpop
Bill Nye debate

14. Define and Design
Explain research on 2 different points of view for Global Warming. 5 facts each.
Try to answer the following questions:
A. What is it?
B. What is causing it?
C. What will change (ocean levels, animal/plant life)?
D. What might the temperature be in 100 years?
E. What is contributing to it?
F. What are arguments for the ‘natural cycle’ side of it?

15. Links to inform your decision:

16. Finish Argument: Persuasive Paragraph
Your paragraph must include your opinion on each of the following: what G.W. is, share what side you take (Y/N) and why (research: facts to back up your side), and your conclusion on the argument.
*You must include the sources that you used. Use sources that are based in Science not politics! There are scientists on both side of the issue.
Due Friday, 2/26

17. Debate Format:
You will be placed into groups of 4-6 to compare notes and information.
You will then be told which side you are arguing.
The floor will be opened for speaking 1 at a time.
You may “respectfully disagree” with each other once the speaker has finished.
Remember, if you get really loud, it is a sign of weakness.

18. Debate Tips: Be polite and courteous. Listen attentively
Be respectful and supportive of peers.
Avoid inappropriate noises.
Speak only when recognized by the moderator.
Allow others to express their opinions; do not monopolize the debate.
Use grammatically correct language.
Speak clearly, slowly, and loud enough to be heard by the audience.
Speak with passion and excitement.