1qr. What methods do scientists use to determine climate conditions that have occurred in the past? Get solution
1qt. Ice cores extracted from Greenland and Antarctica have yielded valuable information on climate changes during the past few hundred thousand years. What do you feel might be some of the limitations in using ice core information to evaluate past climate changes? Get solution
2qr. Explain how the changing climate influenced the formation of the Bering land bridge. Get solution
2qt. When glaciation was at a maximum (about 18,000 years ago), was global precipitation greater or less than at present? Explain your reasoning. Get solution
3qr. How does today’s average global temperature compare with the average temperature during most of the past 1000 years? Get solution
3qt. Consider the following climate change scenario. Warming global temperatures increase saturation vapor pressures over the ocean. As more water evaporates, increasing quantities of water vapor build up in the troposphere. More clouds form as the water vapor condenses. The clouds increase the albedo, resulting in decreased amounts of solar radiation reaching the earth’s surface. Is this scenario plausible? What type(s) of feedback(s) is/are involved? What type of clouds (high or low)? Get solution
4qr. What is the Younger Dryas episode? When did it occur? Get solution
4qt. Are ice ages in the Northern Hemisphere more likely when the tilt of the earth is at a maximum or a minimum? Explain. Get solution
5qr. How does a positive feedback mechanism differ from a negative feedback mechanism? Is the water vapor–greenhouse feedback considered positive or negative? Explain. Get solution
5qt. Are ice ages in the Northern Hemisphere more likely when the sun is closest to the earth during summer or during winter? Explain. Get solution
6qr. How does the theory of plate tectonics explain climate change over periods of millions of years? Get solution
6qt. Get solution
7qr. Describe the Milankovitch theory of climatic change by explaining how each of the three cycles alters the amount of solar energy reaching the earth. Get solution
7qt. Why did periods of glacial advance in the higher latitudes of the Northern Hemisphere tend to occur with colder summers, but not necessarily with colder winters? Get solution
8qr. Get solution
9qr. How do sulfate aerosols in the lower atmosphere affect surface air temperatures during the day? Get solution
10qr. Describe the scenario of nuclear winter. Get solution
11qr. Do volcanic eruptions rich in sulfur tend to warm or cool the earth’s surface? Explain. Get solution
12qr. Explain how variations in the sun’s energy output might influence global climate. Get solution
13qr. Climate models predict that increasing levels of CO2 will cause the mean global surface temperature to rise significantly by the year 2100. What other greenhouse gas must also increase in concentration in order for this condition to occur? Get solution
14qr. Describe some of the natural and human-induced radiative forcing agents and their effect on climate. Get solution
15qr. List five ways natural events can cause climate change. Get solution
16qr. List three ways human (anthropogenic) activities can cause climate change. Get solution
17qr. Describe how clouds influence the climate system. Get solution
18qr. In Fig. 13.18a, p. 419, explain why the actual rise in surface air temperature (gray line) is much greater than the projected rise in temperature due to natural forcing agents. Reference: Figure 13.18a: ... Get solution
19qr. Why do climate scientists now believe that most of the warming experienced during the last 50 years was due to increasing levels of greenhouse gases? Get solution
20qr. List some of the consequences that climate change might have on the atmosphere and its inhabitants. Get solution
21qr. Is CO2 the only greenhouse gas we should be concerned with for climate change? If not, what are the other gases? Get solution
1qt. Ice cores extracted from Greenland and Antarctica have yielded valuable information on climate changes during the past few hundred thousand years. What do you feel might be some of the limitations in using ice core information to evaluate past climate changes? Get solution
2qr. Explain how the changing climate influenced the formation of the Bering land bridge. Get solution
2qt. When glaciation was at a maximum (about 18,000 years ago), was global precipitation greater or less than at present? Explain your reasoning. Get solution
3qr. How does today’s average global temperature compare with the average temperature during most of the past 1000 years? Get solution
3qt. Consider the following climate change scenario. Warming global temperatures increase saturation vapor pressures over the ocean. As more water evaporates, increasing quantities of water vapor build up in the troposphere. More clouds form as the water vapor condenses. The clouds increase the albedo, resulting in decreased amounts of solar radiation reaching the earth’s surface. Is this scenario plausible? What type(s) of feedback(s) is/are involved? What type of clouds (high or low)? Get solution
4qr. What is the Younger Dryas episode? When did it occur? Get solution
4qt. Are ice ages in the Northern Hemisphere more likely when the tilt of the earth is at a maximum or a minimum? Explain. Get solution
5qr. How does a positive feedback mechanism differ from a negative feedback mechanism? Is the water vapor–greenhouse feedback considered positive or negative? Explain. Get solution
5qt. Are ice ages in the Northern Hemisphere more likely when the sun is closest to the earth during summer or during winter? Explain. Get solution
6qr. How does the theory of plate tectonics explain climate change over periods of millions of years? Get solution
6qt. Get solution
7qr. Describe the Milankovitch theory of climatic change by explaining how each of the three cycles alters the amount of solar energy reaching the earth. Get solution
7qt. Why did periods of glacial advance in the higher latitudes of the Northern Hemisphere tend to occur with colder summers, but not necessarily with colder winters? Get solution
8qr. Get solution
9qr. How do sulfate aerosols in the lower atmosphere affect surface air temperatures during the day? Get solution
10qr. Describe the scenario of nuclear winter. Get solution
11qr. Do volcanic eruptions rich in sulfur tend to warm or cool the earth’s surface? Explain. Get solution
12qr. Explain how variations in the sun’s energy output might influence global climate. Get solution
13qr. Climate models predict that increasing levels of CO2 will cause the mean global surface temperature to rise significantly by the year 2100. What other greenhouse gas must also increase in concentration in order for this condition to occur? Get solution
14qr. Describe some of the natural and human-induced radiative forcing agents and their effect on climate. Get solution
15qr. List five ways natural events can cause climate change. Get solution
16qr. List three ways human (anthropogenic) activities can cause climate change. Get solution
17qr. Describe how clouds influence the climate system. Get solution
18qr. In Fig. 13.18a, p. 419, explain why the actual rise in surface air temperature (gray line) is much greater than the projected rise in temperature due to natural forcing agents. Reference: Figure 13.18a: ... Get solution
19qr. Why do climate scientists now believe that most of the warming experienced during the last 50 years was due to increasing levels of greenhouse gases? Get solution
20qr. List some of the consequences that climate change might have on the atmosphere and its inhabitants. Get solution
21qr. Is CO2 the only greenhouse gas we should be concerned with for climate change? If not, what are the other gases? Get solution