Answer Key Proxy data provides an indirect measurement of climate and proxies are only located in certain areas, not globally. Paleoclimatology Tree rings, corals, ice cores, ocean sediment, fossils, pollen Instruments were not as accurate and they did not have as many locations taking measurements as they do today. The distance from the sun changes, the sun’s intensity changes, volcanic eruptions, carbon dioxide concentration, ocean currents, and Milankovitch cycle. The orbital eccentricity of Earth’s orbit, the obliquity of Earth’s axis of rotation, and its precession. The height of the sun in the sky changes throughout the year. In the summertime, the sun is more directly overhead and it is in the sky for a longer period of time. In the wintertime, the sun is lower in the sky and it is not in the sky for a long period of time. Also, the albedo is not uniform which leads to some areas absorbing more heat than others. When there are a lot of sunspots, the sun is said to be in an active period and the amount of energy released by the sun is higher than when the sun has few to no sunspots and the sun is in a dormant period. After major volcanic eruptions Earth’s surface temperature decreases because the aerosols released during the eruption block out some of the sunlight from reaching Earth’s surface. Nino brings unusually warm ocean temperatures whereas La Nina brings unusually cold ocean temperatures. cattle, land use, aerosol concentration, carbon dioxide concentration, cement manufacturing, ozone depletion, and deforestation Industrial Revolution can act to reflect or absorb the sun’s rays so they can lead to an increase or a decrease in global surface temperatures. fuel combustion, biomass burning, automobiles, incinerators, smelters, power plants, deforestation, overgrazing, dust, cigarettes, stoves, fireplaces, and candles Protocol takes away a sink for carbon dioxide, so it leads to an increase in the amount of carbon dioxide in the atmosphere. prevents harmful UV rays from striking Earth. refrigerants (CFC’s, freons and halons) Urbanization, Suburbanization, irrigating desert land, damming rivers, and resource extraction
Answer Key Proxy data provides an indirect measurement of climate and proxies are only located in certain areas, not globally. Paleoclimatology Tree rings, corals, ice cores, ocean sediment, fossils, pollen Instruments were not as accurate and they did not have as many locations taking measurements as they do today. The distance from the sun changes, the sun’s intensity changes, volcanic eruptions, carbon dioxide concentration, ocean currents, and Milankovitch cycle. The orbital eccentricity of Earth’s orbit, the obliquity of Earth’s axis of rotation, and its precession. The height of the sun in the sky changes throughout the year. In the summertime, the sun is more directly overhead and it is in the sky for a longer period of time. In the wintertime, the sun is lower in the sky and it is not in the sky for a long period of time. Also, the albedo is not uniform which leads to some areas absorbing more heat than others. When there are a lot of sunspots, the sun is said to be in an active period and the amount of energy released by the sun is higher than when the sun has few to no sunspots and the sun is in a dormant period. After major volcanic eruptions Earth’s surface temperature decreases because the aerosols released during the eruption block out some of the sunlight from reaching Earth’s surface. Nino brings unusually warm ocean temperatures whereas La Nina brings unusually cold ocean temperatures. cattle, land use, aerosol concentration, carbon dioxide concentration, cement manufacturing, ozone depletion, and deforestation Industrial Revolution can act to reflect or absorb the sun’s rays so they can lead to an increase or a decrease in global surface temperatures. fuel combustion, biomass burning, automobiles, incinerators, smelters, power plants, deforestation, overgrazing, dust, cigarettes, stoves, fireplaces, and candles Protocol takes away a sink for carbon dioxide, so it leads to an increase in the amount of carbon dioxide in the atmosphere. prevents harmful UV rays from striking Earth. refrigerants (CFC’s, freons and halons) Urbanization, Suburbanization, irrigating desert land, damming rivers, and resource extraction
Quiz%203%20-%20Earth's%20Natural%20Cycles%20&%20Anthropogenic%20Sources%20with%20answer%20key.docx