om_4 - Ocean in Motion 4: Carbon dioxide - Can Plants Stop...

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©1998 Project Oceanography Spring Series Ocean in Motion 1 Ocean in Motion 4: Carbon dioxide - Can Plants Stop Global Warming ? A) OVERVIEW 1. The Ocean in Motion -- Carbon Dioxide and Global Warming In this program students will explore mechanisms of the carbon cycle and it's importance to life on our planet. Plants and animals both have an impact on the levels of CO 2 in the atmosphere. Photosynthesis and respiration are natural processes which act in opposition to each other the control CO 2 levels. Burning (oxidation) of fossil fuels contributes greatly to the human contribution of CO 2 into the atmosphere. This causes heat to be trapped and creates a general atmospheric (natural vs. anthropogenic effects) warming called the Greenhouse effect. 2. Contents of package Your packets contain copies of the following: O Overheads from presentation a) Man-made greenhouse gas contributions b) Greenhouse effect c) Photosynthesis and respiration d) Carbon cycle e) Greenhouse diet O Activities I. Plant Power II Greenhouse Diet III. Plants Breathe Too! O Advanced activity 1) Terrarium
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©1998 Project Oceanography Spring Series Ocean in Motion 2 B) PROGRAM PREPARATION 1. FOCUS POINTS O The carbon cycle and carbon dioxide a. The carbon cycle involves a number of components: land, oceans, plants, animals, atmosphere b. Natural processes that regulate the carbon cycle are photosynthesis and respiration. c. The greenhouse effect is necessary for life, yet unnatural sources of CO 2 are harmful to many aspects of life on the planet. 2). ADDITIONAL a) Pre-Program Demo: You may wish to present the following demonstration to students the day before the broadcast or, if time allows, just before broadcast. This is merely a suggestion; a similar demonstration during the broadcast will clarify the concepts of increased CO 2 concentrations to temperature. Label three glass jars as A, B, and C. Place a thermometer in each jar. Jar A is the control; place a lid on it. Using your hands as a seal, cup them around jar B and exhale as much as you can into the jar and quickly seal. Use clay to affix a birthday candle to the inside of the jar C lid. Light the candle and allow it to burn for ten seconds, then blow it out. While the candle is still smoking, quickly put the lid on jar C. Record the starting temperature of each jar, and place in a sunny spot. Record the temperatures at regular intervals for 30 minutes. You may wish to construct graphs at a later time. Encourage students to explain why the temperature was higher in jars with excess CO 2 .
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©1998 Project Oceanography Spring Series Ocean in Motion 3 2) Vocabulary Carbon cycle => the process by which organic material is transferred throughout the atmosphere, land and the ocean. Photosynthesis
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om_4 - Ocean in Motion 4: Carbon dioxide - Can Plants Stop...

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