Activity 4

Today's activity was about how the sun affects the temperature of dirt, sand, and water. There were six bottles. Two had dirt, two had sand, and the last two had water. One of the dirt, sand, and water bottles had paint on the top to slow the penetration of the sun through the bottle. A lamp was put over the top of them for 20 minutes and then the temperatures were taken. The bottles without paint had higher temperatures than the bottles with paint. The sand had the highest temperature, then it was the water, and the dirt had the lowest temperature. This relates to my topic because the sand and snow act in the same way when the sun hits it. They reflect the light so that the sand or snow warms up but they warm up the surrounding area.

http://en.wikipedia.org/wiki/Sand
http://www.botgard.ucla.edu/html/botanytextbooks/worldvegetation/strand/physicalpropertiesofstrand.html