2. What distinctive characteristics of Earth make it suitable for life? How has life altered the chemistry of Earth’s atmosphere? Water, Energy, Time, Recycling or Plate Tectonics, Magnetic field Protection, and Low Sun Radiation. Life has altered the atmosphere by releasing high levels of carbon dioxide along with other chemicals which has been slowly thinning the atmosphere over the years, 3.
We will be talking about parts per million (ppm). 1% = 1 x 10-2 = 10,000 ppm Pre-anthropogenic (1850 AD) concentration means CO2 levels in the atmosphere before humans started to burn coal, peat, oil, and gas in vast quantities. In 1850, the concentration of CO2 in the atmosphere was 280 ppm. CO2 is increasing in the atmosphere at the rate of approximately 2 ppm/yr due to human interaction. In 2013 AD, CO2 in the atmosphere is 396 ppm.
The surface of Mercury and the moon share similar physical characteristics but also differ in certain aspects as well, outlining variations in their respective geological histories. In general, both the moon and Mercury show great similarity in size and from their substantial amount of craters which can be attributed to their lack of a prominent atmosphere that would burn up any primordial impacts. However, a closer look shows many differences. For example, the moon has 14 maria (lava flow regions), a relatively large number when compared with Mercury as it has few maria. This gives us a hint as to how fast Mercury and the moon cooled in relation to each other, as the cooler planet would
Reasons for Seasons Some students think that the seasons are due to the distance of the Earth from the Sun since objects closer to a heat source tend to be hotter. This notion is based on the incorrect belief that the Earth’s orbit is an exaggerated ellipse. Since the Earth’s orbit is nearly circular, its distance from the Sun is fairly constant. Lambert indicates that students may also misunderstand the orientation of the Earth’s axis. Some students believe that the Earth’s tilt changes in degree as the seasons change and that the axis points in different directions as the Earth orbits the Sun.
Some mountain ranges in Scotland, for example, are similar to those of the east coast if North America. Moreover, Wegner also used climatic evidence for his proposal. Coal had been found in the Antarctic, but coal only forms under warm, wet conditions. In addition to this, Coal forming in more tropical conditions suggests Britain once lay closer to the equatorial regions of the world. Thus he believed that the land moved after the coal was produced Since 1912, we have come along away in terms of technology and the improvement of our scientific discoveries.
Sunspots can be quite small ([IMAGE]1500 km diameter), and reach sizes up to 50000 km. While it is known that the darker appearance of the umbra and penumbra is due to their lower temperatures, the sharpness of the boundaries between the umbra and penumbra, and between the penumbra and photosphere, is a phenomenon that is not yet properly understood. While sunspots, especially large ones, can be fairly long-lived (their lifetimes being measured in weeks and months), they do eventually disappear, often by successive fragmentation into smaller and smaller sunspots. Likewise, sunspots do not suddenly appear fully grown, but usually show up as small structures, irregularly shaped and usually without a penumbra (darker structures without penumbra are
The circumference came out to be 7.66 which was too extremely off of my previous findings. I feel that this moon has this ability for small amounts of change because of horizon landscapes and objects. Where you take these observations will add variety to numbers too if you aren’t located in the same location. This lead to my hypothesis having some basis behind it because the illusion has to do with the earth and its landscape providing the illusion. The illusion is based off of the moon’s size and the objects and landscapes connected with it.
| | The FACTS-I experiment is testing how elevated CO2 influences tree growth, carbon concentration in soils, and other factors over a ten-year period. | Greenhouse Effect | The greenhouse effect is caused by atmospheric CO2 but is necessary to keep the surface of the Earth at a habitable temperature. | | Increased levels of atmospheric CO2 could cause global warming and significant climatic change. | | Life on Earth is protected from dangerous radiation by a protective layer or ozone molecules present in the atmosphere.
It increases as the Earth’s atmosphere warms which makes it the most feedback mechanisms to the green house effect. Carbon Dioxide is released through natural activities like volcano eruptions and human activities like deforestation and burning of fossil fuels. We have seen that humans have increased their atmospheric CO2 concentration by a third since the Industrial Revolution. Methane is a hydrocarbon gas, which is produced through natural sources and human activities such as decomposition of wastes in landfills and rice cultivation. Methane is a more active green house gas than CO2 but is less abundant in the atmosphere.
Not just one area but globally! That would give us a better indication of global warming. Artic sea ice is another thing we should be monitoring. “September Arctic sea ice is now declining at a rate of 11.5 percent per decade, relative to the 1979 to 2000 average” (Global Climate Change: Key Indicators, 2014). Due to, again warmer temperatures both maximum and minimum we are seeing ice melt.