Day+4

__** Day #4 of the BHS Senior Science Project **__ ** Question of the day: How is the balance of the carbon cycle affected? ** Today you will: *post the question of the day on your wikipage. 

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1. Let's build on your understanding from last class by adding another element, literally, let's add carbon! Watch the video below to figure out how carbon connects to the ideas you explored in the previous lesson. On your wiki page **explain how "carbon fits into the picture of the greenhouse effect and global warming"** =====  media type="youtube" key="2Jp1D1dzxj8" height="315" width="560"


 * Here is another video to help communicate how carbon connects: Meet Kate the cow! **

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2. **Explore credible internet and/or print sources to research the terms** "carbon cycle", "carbon source", "carbon sink", "greenhouse gases"(include the specific gases) and "greenhouse effect" Post the following to your wiki page:


 * ** Find a visual picture that helps explain what carbon sources and carbon sinks are. Provide an explanation that clearly communicates the role of carbon sinks of sources in the carbon cycle. **
 * **Think of an analogy for this concept and share it out. Make sure to explain - see the example below.Include links to TWO sites that you visited for this information. **
 * For example, if you think about nutrition and exercise, eating cookies represent 'carbon sources' - the more you eat, the more weight you are going to gain and this can lead to negative health impacts! Just like more carbon in the atmosphere can lead to increased greenhouse effect! On the flip side, exercise is like a carbon sink, because it helps me burn off my cookies and lose weight, which is better for my health. This is like a "carbon sink" because if the levels of carbon in the atmosphere go down, then there will be less heat trapped in the atmosphere.

3. Research and **provide an explanation and visuals to show two ways the humans are impacting this carbon cycle in a negative way.** Make sure you can show the sequence of events that connect the human action to a negative impact on the atmosphere.

4. Research and **provide an explanation and visuals to show two ways the humans are impacting the carbon cycle in a positive way.** Make sure you can show the sequence of events that connect the human action to a positive impact on the atmosphere

<span style="font-family: Arial,Helvetica,sans-serif; font-size: 120%;">Additional VIDEO TUTORIALS BELOW:
<span style="font-family: Arial,Helvetica,sans-serif; font-size: 120%;">Watch the following video snipppets:


 * <span style="font-family: Arial,Helvetica,sans-serif; font-size: 120%;">You may also want to watch the related videos "Global Warming" and "The Greenhouse Effect."

<span style="font-family: Arial,Helvetica,sans-serif; font-size: 120%;">media type="youtube" key="HfBZsH0l8c4" height="390" width="480"