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Practice questions on Topographic Maps, 5. (2 pts) How would the gradient change if you measured from the peak of Guard Mountain (on the east side of the lake, across from Mount Price) to Garibaldi Lake? Go back to the location in Google Earth that you examined for question 36 (46 55 25.66 N 152 01 25.17 E). Usually there are different contour intervals for the different maps. Describe how you decided on an estimated elevation for points A and E. c. Is the elevation of waypoint A > (greater than) or < (less than) waypoint E? The purpose of this lab is to familiarize students with how to read and use topographic maps. Legal. Stream channels radiate outwards like wheel spokes from a high point. To calculate the vertical exaggeration in the topographic profile shown in Figure 3.6 we divide the horizontal scale by the vertical scale: (\(\frac{\frac{1000\;ft}{1\;inch})}{(\frac{100\;ft}{inch}}) = 10\). CHAPTER 3 - ELEMENTS OF TOPOGRAPHY - Food And Agriculture Organization Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes. through a particular interval. Observe the velocities of waves on the graph. (3 pts) Based on the scale chosen for you for the topography (vertical axis), calculate the amount of vertical exaggeration on the topographic profile you constructed for question 4. For a relief map the contour interval is frequently persistent. Sharp contour points indicate pointed ridges. The contour lines in this figure are equally spaced. than 6760 feet, but less than 6800 feet. Given that this portion of Pangaea broke apart 200,000,000 years ago, calculate how fast South America and Africa are Solved What is the contour interval for the figure below? D - Chegg These marked or labeled lines are known or termed as Index Contour Lines. Location B is higher. Examine unconformities 1 and 2 indicated in Figure 1.9. slope percent = rise/run 100. A contour line of a function of two variables is a curve along which the function has a constant value, so that the curve joins points of equal value. Chapter 3 Topographic Maps by Karen Tefend and Bradley Deline, CC BY-SA 4.0. (Hint: Speed= Distance/Time). Learn more about how Pressbooks supports open publishing practices. Using the map below ( Figure 6 ), what is the contour which of the above geologic events is the second in the sequence, which of the above geologic events is the fifth in the sequence. d. Prepare a vertical Contour interval: The change in elevation from one contour line to the next is always the same within the same map.Many maps have either a 40- or 80-foot contour interval: An 80-foot interval simply means that each contour line is 80 vertical feet away from . In what direction was the main river flowing? (5 pts) 7. Which of the three proposed plate tectonic mechanisms would NOT occur at this location? Select the Write your estimates for the elevation at each waypoint next to the waypoint. At what depth will the dry mantle rock at point X begin to melt if it is uplifted closer to Earth's surface and its temperature remains the same? What is the relationship between the relief of an area and the contour interval on a map of he area? There are fossils such as Glossopteris and Lystrosaurus that are found in rocks in South America and Africa that indicate they were part of Pangaea approximately 200 million years ago. Earthwork estimations for any type of structure like bridges, dams or roads can be found out with the help of contour intervals in a map. What type of process is going on at this location? Challenging deep learning models with image distortion based on the Measure the horizontal map distance between points A and B to get the vertical ground distance. Answered: Question 5 From a topographic map, the | bartleby fairmount. In this stream, erosion is occurring on the ______________ because _______________, while deposition is occurring on, Cut banks, the fast velocity flows to this point; point bars the slowest velocity water flows to this point. They also show some features made by people such as brodges. Biology, 22.06.2019 02:10. on a topographic map base. Figure 2 is based on a more complicated landscape that I contoured using a dark pen at a 10 m contour interval and using a lighter pen at a 5 m contour interval. Control of the body is accomplished by which of the following body systems? A thumbnail version of the map is shown in Figure 7-E7,a larger copy is provided at the back of this lab manual, and your TA will provide you with a full-scale version of the map in lab. 31W. To show information. All Rights Reserved. For example, if you wanted to do a contour line drawing of a pear, you'd simply draw the outline of the pear, add a stem, and stop there. 250/5 = 50. (1 pt) Explain in a sentence how a ratio scale works. Contour lines never cross. The small contour interval, the survey work and plotting have to be more accurate. To show different features of Earth's surface. (2 pts) What is the ratio scale used on this map? For small contour interval, the money required will also more as the field and office work will be more. A contour interval is a vertical distance or difference in elevation between contour lines. a. which organism was the most useful in coming to this conclusion (best fossil index), which organism was the least useful in coming to this conclusion (worst index), how much of the parent isotope would be remaining after 7 half lives have passed, if a radiometric element has a half life of 425 yrs, how old would a rock be that only had 3.125% of the parent isotope remaining, based on your graph approximately how much of the parent isotope would be remaining after 3.5 half lives, based on your graph above approximately how many half lives have passed when only 35% of the parent isotope is remaining, an archeologist finds some cloth at a burial site and wants to determine the age of the remains. Give the elevation of the highest and lowest contour lines as well as the difference between them. Question 20. For all of the following figures, assume north is at the top of the map, and south at the bottom. Flood stage, or bankfull stage, on Sweetwater Creek occurs at a discharge of ~4,500 cfs. (10 pts) Imagine you are a geologist working for the Geological Survey of Canada. Comparable to figure 8 D-F in ref. PDF 2-1. BATHYMETRIC CHARTS - UMass D Using the surrounding contour lines, what is the approximate elevation of Deadmans Lake? A. Possible contours include 500', 520', 540', 560', 580', 600', 620', etc. Figure 4: Reading Contour Maps . Now count the number of non-index lines contour lines between the 2 index contour lines selected for the contour interval calculating in the 1st step. Notice the general shape of this feature. Convergent (Continent-Ocean or Ocean-Ocean). This is a critical skill to prepare students to learn about more complex geologic maps. Line 1 starts with the contour interval, not the projection point. (5 pts) The following topographic map (Map 7-E3) is from a coastal area and features an interesting geological hazard in addition to the ocean. Exercises on Topographic Maps - Introductory Physical Geology The word contour comes from French, and it is defined as meaning the "outline" of a subject, it often defines a form or an. The circled points indicate days that were at least partially spent at the study side; red circles indicate days with frequent sampling . Example 1- In the graphic below, what is the vertical distance between the contour lines? Contour Lines and Intervals Contour lines connect all the points on a map that have the same elevation and therefore reveal the location of hills, mountains, and valleys. Notice the tick marks pointing toward lower elevation. Geology Labs 1-6 (some questions and answers missing) the profile line. slope percent = rise/run 100 Low gradient and abundant sediment supply. What is Contour Interval? For example, if your map scale is 1 inch = 50 ft, then one inch on your graphs y-axis should only represent 50ft of elevation. Determining Where does it wind up? Show your work! What is Contour Interval? Its Calculation and Uses in Surveying Every sixth contour line has an index contour, which is a bolder or thicker line. The LibreTexts libraries arePowered by NICE CXone Expertand are supported by the Department of Education Open Textbook Pilot Project, the UC Davis Office of the Provost, the UC Davis Library, the California State University Affordable Learning Solutions Program, and Merlot. Considering the size of the area to be mapped, contour intervals are assumed. What features would you expect to occur at this type of boundary? First, subtract the lower number from the higher number and then divide the result by the number of contour lines. A low relief. Answered: Please draw he contour line of the | bartleby be found. Index contours are bold or thicker lines that appear at every fifth contour line. Refining interval counts to include these produced Figure 7 and - Table 8, below. Mark Figure 7-E9 with a line to indicate the distance you used in your calculation. What is the approximate map relief? Apply the principle of conservation of angular momentum to determine the direction a spacecraft will rotate if an internal gyroscope begins to rotate in the counterclockwise direction. In what general direction is the Pacific Plate moving? Large contour interval is to be used if the time available for the survey work is less. a geologist is trying to date a sequence of sedimentary rocks with abundant fossils and sandstones. Each contour line shows a different elevation. Assume value is an integer variable. If you were to walk the path of a contour line in real life, you would remain at the same elevation the whole hike, never traveling up or down. CONTOUR/SPACING= Sets spacing for contour labels; default spacing is 5". What are Contour Lines? | How to Read a Topographical Map 101 Contour lines that are far apart show what type of slope? In Figure 9.7, what is the elevation of the lowest point in the crater? Once your contour lines are drawn, you will notice that you had to draw some lines closer together in some areas and wider apart in other areasand that you may have even enclosed an area by drawing a contour line in a circular pattern. Be sure to only plot those elevations that are at the intersection of the contour line with line A-B. 15. Figure out math tasks Determine Contour Interval and Contour Line Values. Search for the "Washington Monument" and zoom into 3000 feet eye altitude. We further visualize the globally normalized responses of each convolution filter on the image of grating interval 6 in Figure 5 B. The contour interval is stated on every topographic map and is usually They then cross the stream and turn back along the opposite bank of the stream forming a "v". (b) Notice how a mountain saddle, a ridge, a stream, a steep area, and a flat area are shown with contour lines. with the labeled contour lines at the bottom of the profile paper and project scale on profile paper by labeling the horizontal lines corresponding to the available from: Open Geosciences. When you join you get additional benefits. indicate what information is contained on a topographic map, and where it can The figure above illustrates a depression and its representation using contour lines. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. It is important for the farmer or irrigator to identify the slopes on the land. What would cause two separate samples of pure water to have slightly different pH\mathrm{pH}pH values? 11. How to Determine Elevation From a Topographic Map If the arrow is pointing toward the contour lines around your location, your location is a higher elevation than the index contour line. What factors control the course of this river? Please draw he contour line of the given figure below using 1-meter interval and its index contour and Base on the contour lines that you draw in item no.24, what kind of topographic landform is represented? Expert Answer. a) Label the elevation of every contour line on the map. d. Is the elevation of waypoint D > or < waypoint C? The figure on the right shows the 500 mb height map for December 9 with the position of a trough and ridge . Would you expect the gradient of the Missouri River in Nebraska to be greater or less than the gradient that you calculated for the Grape River in Colorado? The difference between two adjacent contours is called the contour interval, which is 10 ft for the Figure 2-2 example. Zoom out and examine the surrounding area, what geological hazards are likely in the area? A simple diagram is shown below on the left. Therefore, if you print it out in black and white please refer back to the electronic copy to avoid confusion. A topographic profile along the A - A' line is shown correctly in: What is the longitude for the northwest corner of the map? right hand portion of the window. unit_3_lab_ch.odt - Question 1 (4 points) The river in this figure is If the map has 40-foot contour intervals, then Point A is located at 3,000 feet, and Point B is located at 2,840 feet. Please enter your email address. Determine the elevation at Point A and Point B in the Figure 9 map below. In this case, to find out the intermediate points elevation, contour intervals are used. 1 What is the contour interval on this map? - Istudy-helper.com What is the relief between the surface of East Musquash Lake and the intersection between U.S. Route 1 and Maine Route 6 in Topsfield? View the full answer. None of these. (b) Why do you think reassociation to 1005 and 130 S particles did not work? Sensor stability as characterized through mean absolute differences (MARD) on every study day including only sensors inserted on study day 1. the entire earth to a city block (or less). Practice Questions on Geological Structures, 7. The height of an object above the surface of the sea. which means that every place between the marked 6800 foot line and the next Thus, ais 520'; bis 540'. Measure the distance using the bar scale between the pole 1400 and 1700 (locations C and F). The numbers are the elevation at the top of the peak. This means every point on a contour line has the same altitude as that of the assumed intersecting surface. Contour Interval - Calculation - Examples - Types - Scale - Definecivil What type of tectonic plates are present? 750m. At 500 degrees Celsius, rocks will be buried to about _______ km depth. refers to height in feet, or meters, above sea level). On which date did a flood event have a recurrence interval of 0.5? It will take approx. See the example under CONTOUR/SPACING below. C. Submergence and deposition of sedimentary layers 10-13. Extra Practice Question on Topographic Maps, Overview of Geological Structures Part 1: Strike, Dip, and Structural Cross-Sections, Exercises on Geological Structures Part 1: Strike, Dip, and Structural Cross-Sections, Overview of Geological Structures Part 2: Folds, Faults, and Unconformities, Exercises on Geological Structures Part 2: Folds, Faults, and Unconformities, 6. What does a contour interval mean | Math Theorems "Contour" actually means "outline" in French, which is where the name comes from. Figure 7 . The overview section 7.4.2 provides useful background to help you answer questions 4 & 5. How are depressions marked on a topographic map? A darker, heavier contour line that is labeled with an elevation. please add a brief explanation thank you within the sequence is a distinctive clay layer that under closer inspection is fine grained volcanic ash. All points on a contour line are at the same elevation. What type of stream drainage pattern is present on this map? See example under CONTOUR/SPACING below. To calculate this divide the distance (in centimeters) between the two islands by the difference in their ages. 7. Please hand in this lab to your TAs at the end of the lab period. What important discovery did the researcher miss? Provided is a topographic map of a hill with contour lines drawn showing elevation in meters. Intervals involvinq the tonal centre, and their directions of movement -1 1 0 0 0 -1 0 1 0 0 -9 0 0 0 -8 1 0 0 -7 0 0 0 -6 . 3. What are the different types of handrails used in bridges? How to Calculate Contour Interval from Maps? Among other things, a topographic map can be used to measure the average slope The contour interval (height difference from one contour line to the next) on the 500 mb height map shown above is 3 decameters (abbreviated as 3 dam) or 30 meters (abbreviated as 30 m). What can be said about level surfaces of \varphi? When connecting the points on your graph paper in the area between the two hills in Figure 3.6, you again want to round out the area to represent the base of your valley between the hills, but be careful not to make the valley floor too deep, as according to the topographic map the elevation is below 40ft, but not as low as 30ft. The rock that most closely resembles the composition of continental crust based on the description in the previous section is: Based on the choice you made for question 15, what is the density of the rocks that make up continental crust? A slope is the rise or fall of the land surface. Contour lines make a v pattern as they cross streams and rivers, and the v always points towards the upstream direction. It is a plane section of the three-dimensional graph of the function f parallel to the-plane. You are tasked with creating your own coastal topographic map, so you hike around a coastal area with a GPS receiver (Global Positioning System) and every so often you record your position along with the elevation in metres at that point, which results in the map below (Map 7-E5). During the flood event of 9/23/2009, the discharge measured at this gaging station was 21,200 cfs. What is the contour interval of the Figure 9 map (shown at the bottom of the page)? Also no adds. Upon adding divalent ions, she could regain 70S70 S70S particles, but never 1005 or 1305 particles. Using a contour interval of 40 m, label the elevation of every contour line on the map below. as sinkholes, underlying soluble rock was dissolved and area collapsed. Using the speed you calculated in the previous question (and ignoring possible changes in sea level), when will the Big Island of Hawaii sink below the surface of the ocean? USGS topographic maps also show many other kinds of geographic features including roads, railroads, rivers, streams, lakes, boundaries, place or feature names, mountains, and much more. D) Nothing. 31? If so, what are the corresponding highest and lowest elevations? First Edition. f. Connect the Considering the above map, the steps involved in contour interval calculation are. The Grand Canyon is an extraordinarily steep area. It is impossible to determine which location is higher. the "V" points to the area of higher elevation or upstream. Which one travels faster? If the user enters 3.14 in response to the following programming statement, what will be stored in value? Please give your answer in grams/milliliter. which isotopic system should they use. How old is the burial site? A rounded contour indicates a flatter or wider drainage or spur. Contour Line Drawing in Art | History & Examples - Study.com Your contour lines will generally fall between the GPS points on your map, so you will need to estimate many of the contour line positions. Contour Lines How does the direction of motion of the Pacific Plate during the last 1.1 million years differ from direction of movement between 4.7 and 7.2 million years ago? To avoid having your profile distorted so that it accurately conveys what the surface of the Earth really looks like in profile, you will want both the vertical and horizontal scales to match. slope of the area you are interested in by subtracting the lowest elevation . What do close contour lines represent on a map? 17. Definition of Contour: A contour or a contour line may be defined as the line of intersection of a level surface with the surface of ground. What approximate discharge would be associated with a 50 year recurrence interval? any point by finding the nearest labeled line, counting the number of lines Locate Little Sinking Creek in the southern portion of the map, north of Hwy. Absolutley amazing app and would definitely recommend. In Figure 9.4, what is the elevation of Malcome Bog? Sorry, you do not have permission to ask a question, You must log in to ask a question. 40 feet. A topographic profile is a cross-sectional view How and why do we divide stars into groups by mass? An excerpt from a contour map is shown below. How far apart are North America and Mainland Asia in cm? The more closely spaced the What is the dc collector resistance? Measure the distance, using bar scale, between the pole in 1400 and 1500 (locations C and D). Solved What is the contour interval for the topographic map - Chegg The horizontal distance between two points on two consecutive contour lines for a given slope is known as horizontal equivalent. topographic profiles: Remember that topographic maps represent When you join you get additional benefits. If you decided to walk to from the monument to the white house how far would u have to walk in miles? This content is subject to copyright. Melodic contour is the shape and sequence of movements of a melodic line. In every map, on the right-hand bottom side, the contour interval is specified. If you were standing at the washington monument what direction would you need to walk to get to the U.S. capitol building? Q. What is the elevation of the base of the monument in meters? A contour line is a line drawn on a topographic map to indicate ground elevation or depression. Step 1. In which zone do the P wave velocities appear to be steadily increasing? a stream. Lets assume, 7000 and 7100 and calculate the interval between it. Vertical Question 14. What Is Contour Interval? Observe the stream on the Omaha N, Nebraska-Iowa quadrangle. 16. Therefore the topographic profile in Figure 3.6 represents a profile of the map surface (along the A-B line) that has been vertically exaggerated by 10 times (10X). Select the correct answer(s) from the questions below: The horizontal distance between points A and B can be measured with a scaled ruler and used to determine the slope percent. The river in this area has a rather particular pattern, what geologic process caused this? Is the church likely to be at risk of contamination from this same leak? (1 pt) Mount Price is located next to Garibaldi Lake (just west of Table Bay, Figure 7-E9 above). Lighter contour lines do not have elevations, but can be determined by counting USask GEOL 121 Lab Final Exam Overview. What shape are the contour lines that cross a valley or stream? The map has a contour interval of forty feet, From the contour map, a profile can be drawn of the terrain. Topographic Maps Flashcards | Quizlet Widely separated contour lines indicate a gentle slope. A topographic map is a precise, graphic representation of the three-dimensional shape of the earth's surface. According to your best fit line, what is the recurrence interval of such a discharge? Measure the gradient to the index contour past the word Creek (the last contour before it reaches Arkansas River). Vertical What is the change in elevation across each contour interval (i.e., between successive "regular" contours) on this map? It is thought to have formed by the runoff of either precipitation or groundwater. A topographic map may or may not include shaded relief to help visualize steep slopes. Suppose that (x,y,z)=i+k\nabla \varphi(x, y, z)=\mathbf{i}+\mathbf{k}(x,y,z)=i+k. These circular patterns indicate hilltops, like in the diagram below (Figure 3.6). tops of peaks, and some are marked with xs with numbers next to them. The calculation of the contour intervals is as below: Firstly locate 2 index contour lines that are labeled with a specific elevation. Example 2- Draw a profile showing the elevations of the contours. BIOMEDICINE: Digestive System | Description o. ATMO336 - Spring 2021 - University Of Arizona In above Figure, what is the contour interval of the map? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems . fault. Which is the code used for the design of the RCC Bridge? a view of the landscape as seen from above. Closely spaced Each dot represents an elevation number, spaced evenly at 100 m in the horizontal.