Exam 18: Global Climate

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Provide evidence that the average warming experienced over the globe has not been uniform over the past 100 years.​

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The Ice Age,which began about 2.5 million years ago,is also known as the ____.

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Changes in incoming solar radiation and in the composition of the atmosphere are two examples of ____ causes of climate change.

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Why might geoengineering proposals pose complex political,financial,and technological challenges?​

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What are some natural ways in which particles can enter the atmosphere? What is the effect of these particles on the climate?

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An example of a positive feedback mechanism is the ____________________,in which an increase in global surface air temperature might cause snow and ice to melt in polar latitudes.

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The greatest warming experienced over the globe in the last 100 years has occurred in ____.

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How does the Theory of Plate Tectonics explain climate change over periods of millions of years?​

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As Earth rotates on its axis,it wobbles like a spinning top,and this wobble,is known as the eccentricity of Earth's axis.​

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Climate models estimate that average global sea level will rise by an additional ____ or more by the end of this century

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List some of the consequences that climate change might have on the atmosphere and its inhabitants.​

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If the Earth were in a cooling trend,which process below would most likely act as a positive feedback mechanism?

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Volcanic eruptions rich in sulfur tend to warm Earth's surface.

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Climate scientists believe that most of the recent global warming is due to increasing levels of ____________________.

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The most recent North American glaciers reached their maximum thickness and extent between about 26,000 and 20,000 years ago (Ya).​

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Glaciers form over land where temperatures are sufficiently low so that,during the course of a year,____.

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Throughout much of Earth's history,the global climate was probably ____ it is today.

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Everything else being equal,the more CO₂ in the atmosphere,the ____________________the surface air.

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The average global surface air temperature since the late 1800s has risen by more than 0.8°C.​

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The use of global-scale technological fixes to counter climate change by either removing greenhouse gases from the atmosphere or by changing the amount of sunlight that reaches Earth is called ____.

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