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Nres/WTR 220-Study Guide for Quiz 2 answers

by: Michelle wilde

Nres/WTR 220-Study Guide for Quiz 2 answers Nres 220

Marketplace > University of Wisconsin - Stevens Point > Environmental Science > Nres 220 > Nres WTR 220 Study Guide for Quiz 2 answers
Michelle wilde
GPA 3.64
Global Climate Change and Water Resource
Katherine Clancy

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About this Document

I have gone through the Ruddiman text and the study guide questions.
Global Climate Change and Water Resource
Katherine Clancy
Study Guide
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This 3 page Study Guide was uploaded by Michelle wilde on Sunday September 20, 2015. The Study Guide belongs to Nres 220 at University of Wisconsin - Stevens Point taught by Katherine Clancy in Summer 2015. Since its upload, it has received 50 views. For similar materials see Global Climate Change and Water Resource in Environmental Science at University of Wisconsin - Stevens Point.

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Date Created: 09/20/15
Reading Guide for Plows Plagues and Petroleum Chapter 1 1 Story of the tortoise and the hare is a metaphor in climate change What are the tortoise and the hare Tortoise is agriculture Carbon Dioxide concentrations began to slowly rise 8000 years agoburning and clearing forests for cropland Methane concentrations5000 years ago with livestock Impact of the changes grew steadily Hare is industrial era 2 When do most scientists suggest anthropogenic impacts on climate began When does the author suggest they began Scientists accept the view that human effects on global climate began in 180039s Slower but steadily accumulating changes which occurred over thousands of years 8000 years ago 3 Why did the author write this book Amount of methane in the atmosphere began going up around 5000 years ago though from what author knows it should have kept going down Trend that went up when it should have gone down Chapter 2 1 Carbon interact with rainwater and sediments How related to climate change Rainwater slightly acidic contains small amounts of Carbon Dioxide from atmosphere Rain feeds groundwater groundwater slowly weathers mineral grains in soilChemical reactions during weatheringC02 locked up in clays in the soil Ground up rock debris created by the slow collision of India into Asialead to Himalaya Mountains and monsoon rains that hit the mountain slopes take C02 out of the atmosphere much faster than normal 2 How are plate tectonics and volcanoes related to climate change Several kinds of plate tectonics that create volcanoes have slowed down during the last 100 mil Years Less 002 has gradually entered the atmosphere over time Volcanoes explode they add 002 to the atmosphere 3 What does the bathtub model represent The bathtub is a metaphor for 002 It represents how 002 enters and exits the atmosphere Faucet is volcanoes and the bathtub is faulty so there is a leakrainwater Chapter 3 1 Explain the significance of the Milankovitch cycle 1991 Astronomer Milutin Milankovitch made series of hand calculations of the amount of solar radiation received by latitude and season over the entire Earth during last several hundred thousand years Took into account 2 factor for major controls on solar radiation 1 varying angle of incoming solar radiation relative to the surface of the Earth 2Earth39s distance from the Sun Laid the groundwork for many discoveries 2 Explain the evidence left behind by glaciers that changed scientist s perspective about climate and glaciations nitially believed was result of great biblical flood had power to move debris over long distance Fresh looking appearance consistent with biblically derived age of Earth being 6000 years old in 180039s and 190039s clear that large ice sheets and higher lake levels had existed more than once in the recent past Glacial debris in moraine ridges had soil from heatadapted treets 0imate had been colder or wetter in recent past and switched back and forth more than once betw The warm and cold and wet and dry states Chapter 4 1 What is ablation How did ablation affect ice melt The processes that melt snow and ice Increase in rainfall and temperature Combination is like warm water faucet on ice cube 2 What is significant about solar radiation during the summer 0ritica factor in determining the growth and melting of ice sheets When solar radiation increased during the summerice melted Take thousands of years to respond 3 Explain and understand how proxies were used to determine ice ages In particular coral and oxygen isotopes Ocean basins have deposits with less erosion than glaciers Sediment cores provided continuous records over hundreds and thousands of years Contain an even more important measure of the size of the ice sheets Oxygen isotopes different mass and weight Both ocean and ice have oxygen18 and 16 Layered history of deposited plankton shells provides info On ice sheets When ice sheets grow more oxygen16 is taken out shells enriched with 18 and vice versa Scientists can reconstruct the history of growing and melting ice sheets Coral ice sheets grow take water from ocean Vice Versa As level of ocean goes up and down so do coral reefs since they can only grown near sealevel Changes in sea level can be used to calculate the volume of the sea water trapped in the ice sheets Chapter 5 1 Understand Kutzbach monsoon theory North Africa Sahel region south of the Sahara Desert Summer rains that allow grass and trees to grow Winter rain stopped and land became dry but grasses naturally adaptedOut of reach from summer rains from South and winter storms from NorthProcess strong solar radiation strong heating of land an inrush of ocean air and monsoon rains lntervals with summer solar radiation of values higher than those today have occurred repeatedly in the past 2 How are monsoons and methane connected Intervals of strong solar radiation produce heavy monsoon rains that saturate wetlands and produce large emissions of methane Monsoon rains flood wetlands and as plants grow they decompose in stagnant water lacking oxygen Bacteria attack the decaying plant matter and convert it to Methane gas and other things 3 What are some sources of methane Natural bogs contain plant matter that decay during small intervals in the summer Cows Chapter 6 1 The theory of human s impact on mass extinctions Australia large fraction of indigenous marsupial population became extinct Evidence ties humans to more recent mass extinctions of large mammals in the Americas NAmerica 12500 years ago many large mammals became extinct within just a thousand years 33 genera of large mammals Paul Martin first argued against climate change being the only reason for mammal extinctionpointed out that there were more or less the same set of environmental variables had recurred at least 4 times in the last million years yet no mass extinction of mammals occurred earlier


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