Air is important for the planet because it contains the gases necessary to support plants, animals and other organisms. Additionally, the presence of an atmosphere keeps the Earth at a habitable temperature.Know More
The air on planet Earth is largely comprised of nitrogen and oxygen. Nitrogen is inert and does not affect most living organisms; however, all living animals require oxygen to survive. Plants require carbon dioxide to survive, which is also found in the earth’s atmosphere. Some bacteria require oxygen, but others are called anaerobic species, and they do not require oxygen. The balance of the various components of the atmosphere is very important to life on the planet.
If the world had no atmosphere, it would be very cold. Astronomers studying other planets know that planets without atmospheres have wildly fluctuating temperatures or they are cold all the time. The Earth’s air helps to moderate the temperature and make it a habitable place for living organisms.
The chemistry of the air surrounding the earth is very important. Currently, the world is warming as the ratio of carbon dioxide, methane and other gases increases. These chemicals are called greenhouse gases because they cause the planet to warm up, just as a greenhouse does.Learn More
The atmospheric release of chlorofluorocarbons and hydrofluorocarbons causes a depletion of the ozone layer. When these chemicals reach the stratosphere, they react with UV light, releasing chlorine atoms that break apart ozone molecules.Full Answer >
Wind is caused by a difference in air pressure. Air pressure changes develop due to heat absorption and are at their largest during the day. Wind speeds are determined by the rate of change in pressure between atmospheric areas.Full Answer >
The color spectrum is the entire range of light wavelengths visible to the human eye. These range from approximately 400 nanometers per wavelength, at the violet end of the spectrum, to 700 nanometers per wavelength, at the red end of the spectrum.Full Answer >
The lithosphere on earth includes the rocky outer shell of the planet, the upper layer of mantle, and the crust. This layer, broken up into sections or tectonic plates, moves constantly and is responsible for the geological activity on earth. The lithosphere is about 60 miles deep in most places.Full Answer >