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Greenhouse Effect
Purpose
• How does the greenhouse effect occur?
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
Hypothesis
• I think the greenhouse effect is ___________________________________________________________________________________________________.
Materials
• Three glass containers
• Three thermometers
• Damp paper towel
• Clock
• Heat lamp
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
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
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
Conclusion
• Answer your purpose question
• Was your hypothesis correct?
• Why or why not?