albedo

1. Experiment Vernier reflectivitate si absorbtie 2. Utilizare date satelit reale land sat (romania, dobrogea) eventual cu date istorice ca sa vedem cum a evoluat treaba, taieri paduri etc
 * Idei**


 * EXPERIMENT #7: [|Albedo] and Temperature

Supplies: Large piece of white construction paper and a large piece of black construction paper, 2 thermometers

Process: On a sunny day with light wind, place a piece of white and black construction paper on the ground a few feet away from each other in direct sunlight. Place a thermometer on each piece of construction paper and position the thermometers in the same manner on both. After 20 minutes, read the temperature of each thermometer. Best results will be on a day with a high sun angle (summer) and light winds.

Scientific principles: 1. A substance with a high albedo will reflect a significant portion of incoming solar radiation. Since less radiation absorbs into the object, the object tends to not warm up as much. A substance with a low albedo will absorb a significant portion of incoming solar radiation. Since more radiation absorbs into the object, the object tends to be warmer. The white piece of construction paper has a high albedo while the black piece has a low albedo. Thus, the black piece of construction paper should be warmer than the white piece. 2. Land cover on the earth' surface will influence the surface air temperature since different land covers have different albedoes. 3. An object is black to the human eye when a lack of reflection occurs off an object; An object is white to the human eye when all colors are reflected off an object. All colors together make up white light; When a color of blue is seen, it means blue light is reflected while the other colors are not.**

http://www.eoearth.org/article/Albedo http://en.wikipedia.org/wiki/Albedo http://climatelab.org/Albedo http://www.slideshare.net/ProfSimonHaslett/sea-ice-and-clouds-albedo-and-climate-change http://education.gsfc.nasa.gov/ess/Units/Unit2/U2L7A.html http://landsat.gsfc.nasa.gov/education/formal.html http://www.educapoles.org/ http://atmospheres.gsfc.nasa.gov/iglo/view_cat.php?cid=24 http://www.albedo-project.org/ http://www.albedo-project.org/index.php?option=com_content&view=article&id=18&Itemid=46&lang=en http://www.builditsolar.com/Projects/Educational/educational.htm#Projects
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