Atmosphere and Climate Change Atmosphere Web quest Answers…. Section 2 Atmosphere and Climate Change Section 2 1. What are the four main layers of the atmosphere? • Troposphere • Stratosphere • Mesosphere • Thermosphere – Ionosphere – Exsosphere Atmosphere and Climate Change Section 2 2. Which layer is closest to space? • Exosphere (upper layer of the thermosphere) Exo means exit… Atmosphere and Climate Change Section 2 3. Which layer is the hottest layer? • Thermosphere (reaching temperatures of 1200 C) • Therm means temperature Atmosphere and Climate Change Section 2 4. Which layer is the coldest layer? • Mesosphere • Think Satelites Atmosphere and Climate Change Section 2 5. What and where are the ionosphere and exosphere? • Thermosphere • Ionosphere: is the lower layer of the thermosphere. This is where earth’s communication is located along with the aurora borealis. • Exosphere: is the upper layer of the thermosphere. Satellites are found in this layer. Atmosphere and Climate Change Section 2 6. Draw a picture of the atmosphere…….write or draw a picture of one important fact about each sphere. (make sure you pay attention to the spacing of each sphere……one sphere is the smallest…….two are about the same in size……and one is the largest). Atmosphere and Climate Change Section 2 7. Why is the atmosphere important? • The atmosphere is an important part of what makes Earth livable. It blocks some of the Sun's dangerous rays from reaching Earth. It traps heat, making Earth a comfortable temperature. Atmosphere and Climate Change Section 2 8. What gases are most common in Earth’s atmosphere? Give the percentages. • nitrogen (78%), oxygen (21%), and other gases (1%) Atmosphere and Climate Change Section 2 9. What is the greenhouse effect (describe how it works)? • Energy from the Sun that makes its way to the Earth’s surface can have trouble finding its way back out to space. This is because of a natural process called the greenhouse effect. Without the greenhouse effect, Earth’s temperature would be below freezing. Atmosphere and Climate Change Section 2 10. What are the main greenhouse gases? • Carbon Dioxide Co2 • Water Vapor H2O –The most abundant • Nitrous oxide NO • Methane MH4 Atmosphere and Climate Change Section 2 11. Describe how each of the gases contribute to the greenhouse effect and how do they get into our atmosphere? • Carbon Dioxide: • it helps trap heat coming from the Sun in our atmosphere through the greenhouse effect. Without carbon dioxide in our air, the Earth would be very cold . • Humans, animals, (Respiration) burning things, engines of cars and trucks and factories. Atmosphere and Climate Change Section 2 Methane • Methane is a greenhouse gas. That means it helps make Earth warm. But if there was too much methane, that could make our planet too warm. • Cow burps and flatulence, Farming rice, garbage dumps, Termites, and Swamps Atmosphere and Climate Change Section 2 Nitrous Oxide • Nitric oxide (NO) and nitrogen dioxide (NO2) Nitrogen dioxide and nitric oxide molecules form during combustion in car engines, power plants, and factories. They can contribute to smog when combined with oxygen molecules and the fumes from paint and gasoline (called Volatile Organic Compounds). They can also contribute to acid rain if mixed with water vapor turning into nitric acid. Nitrogen dioxide will break apart in sunlight and the free oxygen atoms latch onto oxygen molecules forming dangerous ground-level ozone. Atmosphere and Climate Change 12. What is air pollution? • Both solid particles and chemicals in the air • Anything that harms the environment Section 2 Atmosphere and Climate Change Section 2 13. Describe 2 types of air pollution found in out atmosphere? • Primary and Secondary • Primary pollution is put directly to the air, such as smoke and car exhausts. Secondary pollution forms in the air when chemical reactions changes primary pollutants. The formation of tropospheric ozone is an example of secondary air pollution. Atmosphere and Climate Change Section 2 14. When did air pollution begin? (Is this just a recent development?) • Air pollution is not new. As far back as the 13 th century, people started complaining about coal dust and soot in the air over London, England. Since the beginning of the industrial revolution in the late 1700s, we have been changing the Earth’s atmosphere and its chemistry. As industry spread across the globe, so did air pollution. Atmosphere and Climate Change Section 2 15. What is primary and secondary air pollution? • Primary pollution is put directly to the air, such as smoke and car exhausts. Secondary pollution forms in the air when chemical reactions changes primary pollutants. The formation of tropospheric ozone is an example of secondary air pollution. Atmosphere and Climate Change Section 2 Troposphereic Ozone……… **What two places is ozone found? • Troposphere and stratosphere • O3 so three molecules of Oxygen… • Oxygen is found in our atmsphere in both forms of O2 and O3. O2 is good down here..but O3 is bad down here it is a pollutant… • O3 is good in the stratosphere because it reflects the suns harmful rays Atmosphere and Climate Change Section 2 **What causes troposphereic ozone? • In the troposphere, ozone is NOT wanted! It can actually do a lot of damage. • Ozone that increases because of certain human activities does become a problem at ground level and this is what we think of as 'bad' ozone. With increasing populations, more automobiles, and more industry (power plants and refineries in particular), there's more ozone in the lower atmosphere. Since 1900, the amount of ozone near the Earth's surface has more than doubled. Atmosphere and Climate Change Section 2 **Is the ozone found in the troposphere bad for us (explain)? • Smog can damage lung tissues, impair an athlete's performance, create more frequent attacks for individuals with asthma, cause eye irritation, chest pain, coughing, nausea, headaches and chest congestion. It can even worsen heart disease, bronchitis, and emphysema. Atmosphere and Climate Change **What’s the common name for troposphereic ozone? • SMOG Section 2 Atmosphere and Climate Change Section 2 17. What are the global effects of air pollution? Explain why the two are a concern. • Climate Change • Warm near the equator and cold at the poles, our planet is able to support a variety of living things because of its diverse regional climates. The average of all these regions makes up Earth's global climate. Climate has cooled and warmed throughout Earth history for various reasons. Rapid warming like we see today is unusual in the history of our planet. The scientific consensus is that climate is warming as a result of the addition of heattrapping greenhouse gases which are increasing dramatically in the atmosphere as a result of human activities. Atmosphere and Climate Change Section 2 Human Health • People have no choice but to breathe the air around them. When it is polluted, they breathe in ozone, particles and harmful gases that can hurt their lungs, heart, and overall health. Air pollution can cause coughing, burning eyes, and breathing problems. Fortunately, people usually start to feel better as soon as the air quality improves, but not always. • Increase breathing problems in individuals with asthma, bronchitis, and emphysema. Atmosphere and Climate Change Section 2 Ozone Hole… Explain why this is a concern. • Ozone in the stratosphere protects us from ultraviolet radiation in sunlight. The ozone layer is sort of like sunscreen for planet Earth. It absorbs most of the incoming UV "light" before it reaches the ground. • This is causing health problems: cancer • Warming the Earth Atmosphere and Climate Change What is causing the hole? • Various chemicals that humans release into the atmosphere help cause the hole Section 2 Atmosphere and Climate Change Section 2 When did scientist discover the ozone hole? • 1970 • Hole was found over the poles (in the winter) Atmosphere and Climate Change 19. What is Global Warming? • Warming of the Earth’s climate. Section 2 Atmosphere and Climate Change Section 2 20. What is the effect of global warming? • Earth’s climate is warming. During the 20th Century Earth’s average temperature rose 0.6° Celsius (1.1°F). Scientists are finding that the change in temperature has been causing other aspects of our planet to change Atmosphere and Climate Change Section 2 21. How has earth’s temperature changed over the last century? • During the 20th Century Earth’s average temperature rose 0.6° Celsius (1.1°F). Atmosphere and Climate Change Section 2 22. List the effects of climate change due to global warming (that we are seeing now). • Sea Level Rising • Arctic sea ice is melting • Glacier and permafrost is melting • Sea surface temperature are warming • Heavier rainfall causing flooding in many regions • Extreme drought • Ecosystems are changing • Hurricanes more frequent and strength • More frequent heat waves • Warmer temperatures are affecting human health • Seawater is becoming more acidic Atmosphere and Climate Change Section 2 23. What do they predict will happen in the future due to global warming and climate change? • There will be more global warming is in our future according to the results of computer models summarized by the IPCC. For the next two decades warming of about 0.2° Celsius is projected. If we continue to emit as many, or more, greenhouse gases, this will cause more warming during the 21st Century than we saw in the 20th Century. During the 21st Century, various computer models predict that Earth’s average temperature will rise between 1.8° and 4.0° Celsius (3.2° and 7.2° F) depending largely on how humans change the ways they live on the planet. Atmosphere and Climate Change Section 2 24. What is acid rain, and explain the effect it has on our environment. • Acid rain is a general term used to describe different kinds of acidic air pollution. Although some acidic air pollutants return directly back to Earth, a lot of it returns in rain, snow, sleet, hail, mist or fog, which is why we call it acid rain • Acid rain can have harmful impacts on the ecosystems in the environment. It acidifies the soil and water where it falls, damaging or killing plants and animals. Surface water acidification can lead to a decline in, and loss of, fish populations and other aquatic species including frogs, snails and crayfish. Acid rain affects trees, usually by weakening them through damage to their leaves.
