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. What are the different types of handrails used in bridges? Absolutley amazing app and would definitely recommend. . Location A is higher. Where do the S wave velocities abruptly change? A darker, heavier contour line that is labeled with an elevation. Q. Contour lines Use the appropriate conversion factor to convert the horizontal map distance to horizontal ground distance. Are streams in this area downcutting or laterally eroding? for Interpreting Topographic Maps You will receive a link and will create a new password via email. Show your work. How far did the pole move? 40 feet - 20 feet = 20 feet In which stage of the cycle of stream erosion is this area? Write your answer in feet. Locations A and B are at the same elevation. On our map, point "P" lies between 3000 feet and 4000 feet contours . Because the stream flows south, contour a, which lies downstream of contour b, must be the lower of the two. Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes. Notice the tick marks pointing toward lower elevation. USask GEOL 121 Lab Final Exam Overview. vertical scales on your topographic profile are not the same. What is the relief (difference in elevation) between Little Tomah Lake and the top of Tomah Mountain (look for "Tomah Mtn")? 2. This is a critical skill to prepare students to learn about more complex geologic maps. A contour line is a line drawn on a topographic map to indicate ground elevation or depression. Its Calculation, Uses and When it is Required, Factors Affecting the Selection of Contour Interval. The steepest slope on this hill can be found on the side that is facing which direction? The intervals +4tt and 4tt, then, respectively showed intervals ascending and descending from the tonal centre. Contour lines that are close together show what type of slope? Give the elevation of the highest and lowest contour lines as well as the difference between them. Stream channels radiate outwards like wheel spokes from a high point. Low gradient and abundant sediment supply. which Geologic Law did you use to come to the conclusion you made in the previous question (figure 1.8)? Practice questions on Topographic Maps, 5. 8. What is the latitude on the northern edge of this rectangle? characteristics of contour lines: 1. What is Contour Interval? An error message is displayed. 9.4) to estimate the elevation of this point as accurately as possible. Examine unconformities 1 and 2 indicated in Figure 1.9. Usually there are different contour intervals for the different maps. Would the recurrence interval for this flood plot at: Is it possible that a flood with a similar discharge to that of the event from 9/23/2009 could happen again in the next 20 years? The shaded areas indicate the 95% confidence intervals. The difference between Contour intervals and Horizontal Equivalent are tabulated below: Contour Lines and Its Types, Characteristics and Uses in Surveying. (1 pt) If someone decided to climb Mount Price, what would be the easiest and safest route to take? Given that this portion of Pangaea broke apart 200,000,000 years ago, calculate how fast South America and Africa are If the river on this map is 1.93 miles long, what is the gradient for this river? What is the profile view to Topographic Map #1? https://openpress.usask.ca/app/uploads/sites/52/2018/08/SKtopomap_v2.pdf. The following are general characteristics of contour lines: 1. An excerpt from a contour map is shown below. Answers: 1 Show answers Another question on Biology. When we hold a ruler to the y-axis of the topographic profile in Figure 3.6, we see that 0.5 inches = 50ft, which means 1 inch = 100ft on the vertical scale. the boundary follows the course of the river at the time it was drawn, the river has since moved. When the vertical dimension of your graph is different from the horizontal dimension on your map, you may end up with a graph that shows a vertical exaggerationand the features of the Earth represented by your topographic profile may be deformed such as in Figure 3.7. (5 pts) 7. What type of drainage pattern is present in this area? index contour lines are generally darker and are marked with their elevations. Vertical Measure the horizontal map distance between points A and B to get the vertical ground distance. o drainage ' divide or watershed boundary 1000 ft -::-:: Contour interval 50 Feet Figure 12.5 Flow lines across a topographic surface. Refer to the figure below. How fast was the Pacific plate moving during the last 1.1 million years between the formation of the Big Island and Maui in cm/year? Contour lines that are very close together indicate a steep slope. The height of an object above the surface of the sea. 40 feet. (Hint: Speed= Distance/Time). The small contour interval, the survey work and plotting have to be more accurate. Line 1 starts with the contour interval, not the projection point. 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. What type of bedrock is present in this area? Sometimes vertical exaggeration is desiredbut, in some cases, you may not want it. Slope Worksheet- Use the information from the example above and complete the slope worksheet. View the full answer. Transcribed image text: Refer to the hydrologic map in Figure 14.5. Streams/Rivers Escarpments/Cliffs What do close contour lines represent on a map? Contour line art is a method of drawing where you draw only the outline of an object, without any shading. See the example under CONTOUR/SPACING below. Please give your answer in grams/milliliter. The headings indicate the direction the Pacific Plate is moving over the hot spot. In Figure 9.4, what is the elevation of the highest point on Farrow Mountain? This makes reading the map easier. In which zone do the P wave velocities appear to be steadily increasing? hillslope: The figure on the right shows the 500 mb height map for December 9 with the position of a trough and ridge . The terms below along a line drawn through a portion of a topographic map. Inspect the P wave velocities. Which one travels faster? pressing down on the middle mouse wheel and moving the mouse forward and Large contour interval is to be used if the time available for the survey work is less. long-term time-average of sea level). located below the scale. In which direction does it flow? (2 pts) What is the relief on this map? which means that every place between the marked 6800 foot line and the next A profile may be constructed contour lines, the steeper the slope. Based on the drainage pattern type, does the bedrock underlying this area consist of rocks uniformly resistant to erosion or rocks alternating between resistant and non-resistant layers? Locate Little Sinking Creek in the southern portion of the map, north of Hwy. What important discovery did the researcher miss? Start climbing from the foot of a hill toward the top, this is called a rising slope (see Fig. of a hill (or hills). How far did the pole move? The number of contour lines in-between 7000 and 7100 are 4. contour (Z) creates a contour plot containing the isolines of matrix Z, where Z contains height values on the x - y plane. The contour lines in this figure are equally spaced. As you can see contour lines with 10 m interval. The more closely spaced the refers to height in feet, or meters, above sea level). In this case, to find out the intermediate points elevation, contour intervals are used. Overview section 7.3 provides background information on contour lines to prepare you for these exercises. exaggeration: These marked or labeled lines are known or termed as Index Contour Lines. Divide the current maximum elevation of the Big Island by the rate you calculated in the previous question. Calculate how fast the Hawaiian Islands are sinking, by using the ages and elevations of Maui and Nihoa. For a relief map the contour interval is frequently persistent. Sharp contour points indicate pointed ridges. For 1:25 000 scale maps the interval between contours is usually 5 metres, although in mountainous regions it may be 10 metres. Examine the map below to answer the question. Go back to the location in Google Earth that you examined for question 36 (46 55 25.66 N 152 01 25.17 E). Q. To take the difference, subtract the higher elevated line with the lower elevated line reading. TAs names: _______________ _______________. -- - . 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. The numbered contour lines are the index contours; the unnumbered contour lines are the supplemental contours. Biology, 22.06.2019 02:10. How far (in Km) did the pole move in one year during this time period? Closer distance indicates steep slope and wider distance gentle slope. above or below it, multiplying by the contour interval, and adding or subtracting General What happens when the lithosphere at point X is heated to 1500 C? The number of lines obtained in the above step is taken and added with 1. . Likewise the "40" contour connects depths of 40 ft below sea level and so on. Please hand in this lab to your TAs at the end of the lab period. They are usually mapped with large contour intervals. What factors control the course of this river? (1 pt) Garibaldi Creek is located east of Deadmans Lake (Figure 7-E8). If the user enters 3.14 in response to the following programming statement, what will be stored in value? Mark Figure 7-E9 with a line to indicate the distance you used in your calculation. submergence and deposition of sedimentary layers 10-13. based on the assemblage of organisms (A-I) in this sample, what is the age of this rock. Use a contour interval of 4 inches. Please enter your email address. dimensional space. What can be said about level surfaces of \varphi? Step 3. Do Pole movements seem to be steady every 100 years or variable? tops of peaks, and some are marked with xs with numbers next to them. To show information. Question 14. Then add 1 to 5 that becomes 6. the final step is the quotient of the difference between 2 index lines (step 2) and the number of lines in between two index lines plus 1 (step 5). The rock that most closely resembles the composition of oceanic crust based on the description in the previous section is: Based on the choice you made for question 17, what is the density of the rocks that make up oceanic crust? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems . 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? First, we compute the activation . (2 pts) What is the ratio scale used on this map? - Table 8 . Answer: B. How far have the snake fossils moved apart since they were originally deposited? Horizontal When a large area is to be mapped in small piece of paper contour intervals are used. Why does the boundary depart from the river channel? d. Is the elevation of waypoint D > or < waypoint C? A contour is a line drawn on a map that joins points of equal height above sea level. When the contour interval is not specified in the map, it can be calculated as explained in the following sections. For producing a detailed study of As contour intervals are for the calculation of vertical elevation of an area, same way to calculate the horizontal distance it is termed as Horizontal Equivalent. Please use Occams razor as you answer the questions: use the simplest explanation rather than the most complicated explanation to answer the question. contour (X,Y,Z) specifies the x and y coordinates for the values . It is impossible to determine which location is higher. What is the contour interval? (2 pts) What is the gradient between Garibaldi Lake and Mount Price? indicate what information is contained on a topographic map, and where it can All melodies have contours. Contour Lines 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? Please refer to this Saskatoon topographic map to complete the next three questions. Measure the gradient to the index contour past the word Creek (the last contour before it reaches Arkansas River). (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? fairmount. Introductory Physical Geology Laboratory Manual First Canadian Edition (v.3 - Jan 2020) by Joyce McBeth; Karla Panchuk; Tim Prokopiuk; Lyndsay Hauber; and Sean Lacey is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License, except where otherwise noted. In Figure 9.4, what is the elevation of Malcome Bog? According to your best fit line, what is the recurrence interval of such a discharge? Contour lines rules: 1. Once your points are plotted on the graph paper, you simply connect the dots. As you look at the map, notice that the contour Explain how you made this decision. What must be the maximum dry density of Granular Sub Base & Wet Mix Macadam used What is the Safe Bearing Capacity values for Different Soils? As a contour approaches a stream, canyon, or drainage area, the contour lines turn upstream. Consider the ages and positions of the islands listed above along with what you know about plate tectonics and hotspots. Considering the size of the area to be mapped, contour intervals are assumed. On which date did a flood event have a recurrence interval of 0.5? Contour Step 2. Using the surrounding contour lines, what is the approximate elevation of Deadmans Lake? Answer the following questions about these waypoints, based on your best guess estimate of the elevation of each waypoint. f. Connect the These circular patterns indicate hilltops, like in the diagram below (Figure 3.6). The figure above illustrates a depression and its representation using contour lines. What is the relief of the area in the map? Essentially a topographic profile is a side image of a topographic map, but the image is only a representation of the area shown on the line on the topographic map (line A-B on Figure 3.6). Make sure to zoom out to get a good view of the relevant features. Lakes/Ponds. Orbiting spacecraft contain internal gyroscopes that are used to control their orientation. To calculate the vertical exaggeration in the topographic profile shown in Figure 3.6 we divide the horizontal scale by the vertical scale: (\(\frac{\frac{1000\;ft}{1\;inch})}{(\frac{100\;ft}{inch}}) = 10\). Each dot represents an elevation number, spaced evenly at 100 m in the horizontal. 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 is the gradient? According to the geothermal gradient, rocks at 500 degrees Celsius will be buried how deep? a stream or river and dividing the distance (in miles) into the vertical difference example. Mark Joyce McBeth; Karla Panchuk; Tim Prokopiuk; Lyndsay Hauber; and Sean Lacey, 1.3 GEOLOGY & RESOURCE MAPS FOR CANADIAN PROVINCES & TERRITORIES, 1-E1 LAB EXERCISES CANADIAN GEOLOGY & MINERAL AND ENERGY RESOURCES, 1-E2 LAB EXERCISES REGIONAL GEOLOGY & MINERAL AND ENERGY RESOURCES, 2-E1 LAB EXERCISES MINERAL IDENTIFICATION, 3.5 IGNEOUS ROCK FORMATIONINTRUSIVE VS. EXTRUSIVE, 3.6 LAB EXERCISES IGNEOUS ROCK IDENTIFICATION, 4-E1 LAB EXERCISES SEDIMENTARY ROCK IDENTIFICATION, 5.4 LAB EXERCISES METAMORPHIC ROCK IDENTIFICATION, 6.7 LAB EXERCISE CHOOSING ABSOLUTE DATING METHODS, Answers to Practice Lab Exercises in section 7-E1, 8.6 GEOLOGIC STRUCTURES CREATED BY PLASTIC & BRITTLE DEFORMATION, 8-E5 EXERCISES COMPLEX GEOLOGICAL MAPS & CROSS-SECTIONS, 9-E1 LAB EXERCISE LOCATING AN EPICENTER, 9-E3 LAB EXERCISE HISTORICAL EARTHQUAKE, 10.3 STREAM GRADIENT AND THE CYCLE OF STREAM EROSION, Introductory Physical Geology Laboratory Manual First Canadian Edition (v.3 Jan 2020), https://pub.data.gov.bc.ca/datasets/177864/pdf/092G/092G095.pdf, Next: Extra Practice Question on Topographic Maps, Introductory Physical Geology Laboratory Manual First Canadian Edition (v.3 - Jan 2020), Creative Commons Attribution-ShareAlike 4.0 International License. e. Place the paper Using the contour lines, determine the upstream direction of the creek. How contour lines show a pair of small hills
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