greenhouse effect. purpose how does the greenhouse effect occur?
TRANSCRIPT
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Greenhouse Effect
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Purpose
• How does the greenhouse effect occur?
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Research Questions
• 1. Can we live without the greenhouse effect?
• No it keeps the earth warm
• 2. Why is the greenhouse effect bad
• The earth gets too warm to sustain life and changes natural weather patterens
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Hypothesis
• I think the greenhouse effect is ___________________________________________________________________________________________________.
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Materials
• Three glass containers
• Three thermometers
• Damp paper towel
• Clock
• Heat lamp
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Procedure
• 1. Record initial temp for each thermometer. • 2. Place a thermometer in an empty glass container,
Place another thermometer in a glass container and cover with plastic wrap, place the third thermometer in the glass with the damp paper towel and cover with plastic wrap.
• 3. Place all three under heat lamp equal distance from heat source.
• 4. Record temp every 60 sec 20 times. Record data• 5. Remove from heat observe what happens to the
temperature. Record observations
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Data
Time (Min) Plain Glass Covered Glass
Glass with paper towel
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
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Analysis
• 1. Which environment warmed the quickest? Why do you think this happened?
• 2. After you removed the heat which retained the heat the most? Why do you think this happened?
• 3. Make a line graph showing your data
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Conclusion
• Answer your purpose question
• Was your hypothesis correct?
• Why or why not?