Earth Science - Geography homework help
You will need to get into my book inorder to help with this work. Once you have reviewed and agree to help i will provide access to the book. This work cant be done without the book.Assignment #5, Name _________________________ (30 points) Due October 9 1. Regarding the sea level rise graphs in the class lectures shown here, answer the following: (2 pts each) a. What years are covered by each graph? b. Is one graph a better representation of long term change? c. How much did sea level rise from 1880 to 1900? Give the answer in inches, using .04 inches per mm. d. How much did sea level rise in the last 20 years? Same: use .04 inches/mm to convert. e. Comparing the answers from 3 and 4, what can you say about the rate of increase over a 20 year period? Has it changed? Sea level change (mm) f. Pick one of the articles on this site and summarize the problems that this community is facing. What, if anything, are they doing about it? I don’t need a report: ½ page max. Use the map at the bottom link to make your choices. Make sure you name the places (if I have to guess, you’ll lose lots of credit). Writing grade is based upon the same criteria for Assignment 4. https://www.chesapeakequarterly.net/sealevel/index.php#Maps (6 pts) Assignment #5, PSC1210, page 2 Name _________________________ This question is based upon Chapter 23.1 (and slides in Oct 5th lecture) 2. Give the relative age and ordering for ALL the letters shown below in order from oldest to youngest. Note E and B are faults include them in your answer as well. (8 pts) a. OLDEST (first)___________________________________________YOUNGEST (last) b. What kind of fault is E? (1 pt) c. According to Chapter 21 of the text, where are these kinds of faults found in the US? (1 pt) d. Complete question 45 of the text- on page 658 (the one about the granite pebbles within a sedimentary rock). What principles of dating are you using here? (this might help you get part credit if you get the overall answer wrong) (4 points) Assignment #5, Name _________________________ ( 3 0 points) Due October 9 1. Regarding the sea level rise graphs in the class lectures shown here , answer the following: ( 2 pts each ) a. What years are covered by each graph? b. Is one graph a better representation of long term change? c. How much did sea level rise from 1880 to 190 0 ? Give the answer in inches, using .04 inches per mm . d. How much did sea level rise in the last 2 0 years? Same: use .04 inches/mm to convert. e. Comparing the answers from 3 and 4, what can you say about the rate of increase over a 2 0 year period? Has it changed ? f. Pick one of the articles on this site and summarize the problems that this community is facing. What, if anything, are they doing about it? I don’t need a report: ½ page max. Use the map at the bottom link to make your choices. Make sure you name the place s ( if I have to guess, you’ll lose lots of credit ) . Writing grade is based upon the same criteria for Assignment 4. AssPSC 121 Prince Georges Community College Ice Most of earth’s fresh water is frozen PSC 121 Prince Georges Community College Ice: Two flavors # 1. Sea Ice. Ice that is floating in or covers the oceans PSC 121 Prince Georges Community College Ice: Two flavors # 2. Ice on land: glaciers Greenland, Antarctica, islands in the polar north, various mountain ranges Definitions: What are glaciers? PSC 121 Prince Georges Community College Snow that has built up and compressed into a permanent ice field. Key feature. Glaciers flow- they move. They are “icy rivers”. Two flavors of glaciers Continental glaciers: mainly Greenland and Antarctica  Pressure in center of glacier causes it to spread out Mountain/valley glaciers, also called alpine glaciers: scattered around the world  Gravity cause alpine glaciers to move down hill (like streams) Note: The continental US does not have continental glaciers! Only alpine glaciers (in the Rockies and Alaska) PSC 121 Prince Georges Community College Glaciers: how they grow and shrink: “Mass Balance” Grow in cold weather- winter snows  accumulation Shrink in warm weather (melt in summer)  ablation (note: if glacier is at edge of sea- it could calve and create icebergs) If accumulation is greater than ablation  glacier grows If ablation/calving is greater than accumulation  glacier shrinks Continental glaciers are only present in ice ages PSC 121 Prince Georges Community College We are living in an ice age because we have continental glaciers in Greenland and Antarctica. If earth has no continental glaciers- some call it a greenhouse phase But… we’re living in the warm interglacial phase. (normally we’d go back into the cold phase in 30-50 thousand years, but man made greenhouse gases will probably prevent that) What happens in ice ages? That we can discuss 1. Sea level changes 2. Erosion/deposition Why are we in an ice age now? Complicated, might have to do with arrangement of continents. To be discussed Map of earth during peak of last ice age PSC 121 Prince Georges Community College Whats different? Current (Robinson projection) PSC 121 Prince Georges Community College How much has the land area shrunk? The classic demo/experiment PSC 121 Prince Georges Community College Land mass: clay Sea ice in water Glaciers on land Add water here If the ice cubes melt- which will affect water level more? Left or right. Like wise if you take water and freeze it on land (clay) what will happen to the water level Continental Shelves and sea level PSC 121 Prince Georges Community College A small change in water level can expose or cover lots of land Continental Glaciers and sea level PSC 121 Prince Georges Community College Continental glaciers grow  sea level goes down Continental glaciers shrink (like currently)  sea level goes up Think of hydrological cycl
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