Title: GreenHouse Earth ... # 20 Problem: To determine what surface and color best obsorbs heat. Materials: 2 plastic hemispheres with tops a bases dark, and dry soil c-clamp 2 celcius thermometers heat lamp clock or timer colored pencils tape Safety Percautions: Be sure to keep water from contacting any part of the lamp assembly. Wear safety goggles. Hypothesis: By using all the instruments givin to us, we will be able to figure out what surface and color best obsorbs …showed first 75 words of 405 total…

…showed last 75 words of 405 total…surfaces did. And after the 10 min. when we turned the lamp off, the soil still had a higher temperuate then the water did. This takes about 10 min. for it all to cool back down and to both have the same temperatures at the end. Conclusion: By looking at the graph, you can conclude that the dark rough soil obsorbed more of the lamps energy then the water did. Any dark rough surface will do this.