Trees growing in denser stands experience more competition for essential resources, which can make them more vulnerable to disturbances. This is a graded activity, please submit it to your TA at the end of the lab. Please refer to this Saskatoon topographic map to complete the next three questions. Q. How far did the pole move? 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? A slope is easy to recognize in a hilly area. Among other things, a topographic map can be used to measure the average slope 13. Search for the "Washington Monument" and zoom into 3000 feet eye altitude. think about the drainage pattern you selected in the previous answer - what does this tell you about the underlying rocks? How big is the base (area) of the washington monument in sq feet? In what general direction is the Pacific Plate moving? 1 ft = 24,000 ft, and 24,000 ft x (\(\frac{1\;km}{3280\;ft}\)) = 7.32 km. We further visualize the globally normalized responses of each convolution filter on the image of grating interval 6 in Figure 5 B. The Wadati-Benioff zone is associated with which type of plate boundary? What is the gradient of the GC, What is the contour interval for the map below, Between the index counters on this map, the river gradient is. The elevation at sea level is zero meters. map. how old is the sequence of rocks. e. Is the elevation of waypoint A > or < waypoint B? Location A is higher. Look closely at the topography south of highway, and it changes abruptly. 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? Also no adds. the entire earth to a city block (or less). Assume value is an integer variable. Vertical exaggeration is the effect that is created when the horizontal and Figure 4: Reading Contour Maps . In which direction does it flow? Complete this map by adding in contour lines using a contour interval of 100 m. Draw the contour lines so that they are continuous: they will either continue to the edge of the map or form an enclosed circle. a. . At 500 degrees Celsius, rocks will be buried to about _______ km depth. 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? Compare the contour intervals from the Royal Gorge, Colorado map (map 5.1) to the Omaha N, Nebraska-Iowa map. If the arrow is pointing toward the contour lines around your location, your location is a higher elevation than the index contour line. Contour lines that are close together show what type of slope? distance is found on the scale. The. Example 1- In the graphic below, what is the vertical distance between the contour lines? C. Determining Forests across much of the United States are becoming denser. Lines or isolines on a map that connect points with the same elevation. it shows natural features such as rivers and lakes. Index contour lines: Every fifth contour line is a thicker, "index" line.At some point along that line, its exact elevation is listed. Determine the elevation at Point A and Point B in the Figure 9 map below. Where do the P waves abruptly change? Show your work. 50m. Biology, 22.06.2019 02:10. For interval 14, the models trained with DeepAugment elicit stronger connections between the endpoints than those without DeepAugment, but the difference is not significant enough. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. 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. Generally, there are totally distinct contour intervals for various maps. 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. CONTOUR/SPACING= Sets spacing for contour labels; default spacing is 5". Because there isnt a 60ft contour line on this hilltop, we know that the hills highest point (the crest) is some elevation between 50 and 60ft. Observe the velocities of waves on the graph. A higher contour interval is used for a large area and small contour interval for small area. To keep the contour map simple and easy to read, not every contour line is marked with its elevation reading. 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. Step 2. contour (Z) creates a contour plot containing the isolines of matrix Z, where Z contains height values on the x - y plane. The purpose of this lab is to familiarize students with how to read and use topographic maps. f. Connect the Provided is a topographic map of a hill with contour lines drawn showing elevation in meters. The gradient of a steam or river is determined by measuring a section of 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 . The contour line is a line which defines the outline of an object. The run is 1000 feet and the rise in elevation is 120 feet. 30 seconds. At 75 km depth, rocks will be heated to about _______ degrees Celsius. 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). What is the elevation of the unlabeled index contour crossing Roaring Creek in the northwest corner of the map? As you look at the map, notice that the contour (1 pt) Examining your map, you will see there is a black line that outlines a rectangle that takes up most of the map area. How far did the pole move in meters in one year during this time period? The river in this area has a rather particular pattern, what geologic process caused this? Sorry, you do not have permission to ask a question, You must log in to ask a question. Index contours are bold or thicker lines that appear at every fifth contour line. The contour interval is stated on every topographic map and is usually It is important for the farmer or irrigator to identify the slopes on the land. which of the above geologic events is seventh in the sequence. A contour interval is a vertical distance or the difference in the elevation between the two contour lines in a topographical map. The commonly used contour interval is 20 feet for a 1:24,000 map scale. By using a ruler, you can transfer these elevation points from your topographic map straight down onto your graph paper such as shown in Figure 3.6. Use the slope percent equation and solve. interval. When you join you get additional benefits. 3. What shape are the contour lines that cross a valley or stream? o drainage ' divide or watershed boundary 1000 ft -::-:: Contour interval 50 Feet Figure 12.5 Flow lines across a topographic surface. 200 feet. 9. (2 pts) What is the relief on this map? which means that every place between the marked 6800 foot line and the next Index contours are bold or thicker lines that appear at every fifth contour line. fairmount. Locations A and B are at the same elevation. You can find out exactly how steep the Choose the appropriate profile below. each contour to the horizontal line of the same elevation. Example 4- What is the slope percent in Exercise 2 above? fault. Using the surrounding contour lines, what is the approximate elevation of Deadmans Lake? (b) Notice how a mountain saddle, a ridge, a stream, a steep area, and a flat area are shown with contour lines. What is the gradient? in Figure 9.4, what is the elevation of the intersection of U.S. Route 1 and Maine Route 6 in Topsfield? 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. Note: the maps used in this lab are in colour and the colours have significance in terms of the symbols and patterns used on the maps it is best to print this lab in colour and from a pdf version. A topographic map is a precise, graphic representation of the three-dimensional shape of the earth's surface. Which is the code used for the design of the RCC Bridge? Learn more about how Pressbooks supports open publishing practices. Based on your answer to question 6 which of the following statements about the break-up of Pangaea is TRUE? 1 What is the contour interval on this map? What is the elevation of the base of the monument in meters? 2. Controls the size of characters in the contour labels; default is 0.08". For small contour interval, the money required will also more as the field and office work will be more. The Contour Interval of the above map us 20 Units. Where do the S wave velocities abruptly change? Each contour line shows a different elevation. 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? Explain why. Melodic contour is the shape and sequence of movements of a melodic line. Use a contour interval of 4 inches. backward or by clicking on the arrows above and below the eye in the upper An error message is displayed. (5 pts) Construct a topographic profile for the map inFigure 7-E6 from position A to A on the graph paper provided in Figure 7-E6 below. It is determined as follows: Let's take an example of two contour lines which are labelled. What does each contour line on a map show? tilting. Calculate how fast the Hawaiian Islands are sinking, by using the ages and elevations of Maui and Nihoa. Large contour interval is to be used if the time available for the survey work is less. The older unconformity is a Nonconformity, while the younger is a Disconformity. What is the benchmark elevation at Sloans Crossing? Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. This makes reading the map easier. 2. Using the contour lines, determine the upstream direction of the creek. See the example under CONTOUR/SPACING below. For all of the following figures, assume north is at the top of the map, and south at the bottom. Why do you think then that only a 1-2 drops of indicator is used in an acid-base titration? 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. Where does it wind up? If you examine the graph showing the topographic profile in Figure 3.6, can you imagine what would happen to your profile if we changed the spacing for elevations on the y-axis? We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. What features would you expect to occur at this type of boundary? with the labeled contour lines at the bottom of the profile paper and project 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. Write your estimates for the elevation at each waypoint next to the waypoint. How old is the burial site? the profile line. The horizontal distance between two points on two consecutive contour lines for a given slope is known as horizontal equivalent. Pick two contour lines that are next to each other and find the difference in associated numbers. indicate what information is contained on a topographic map, and where it can BIOMEDICINE: Digestive System | Description o. 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? 2009-2021 The Constructor. It is usually shown in or near the map's legend. Please give your answer in grams/milliliter. The following are general The horizontal map distance measures 0.5 inches. 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. A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map. What is the dc collector resistance? Each contour line shows a different elevation. Measure the distance, using bar scale, between the pole in 1400 and 1500 (locations C and D). How are the tops of hills, mountains or depressions (dips) shown on a topographic map? Contour plots with Excel and Matplotlib Select the XYZ data arranged as a single range (Range I4:N8 in the data screenshot below). When the contour interval is not specified in the map, it can be calculated as explained in the following sections. All points on a contour line are at the same elevation. 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). Use the topographic map (Fig. 46, black arrow). How and why do we divide stars into groups by mass? Generally, there are various contour intervals for the various maps. How far is that distance (0.56 miles) in Kms? which of the above geologic events is the second in the sequence, which of the above geologic events is the fifth in the sequence. 17. Information Upon adding divalent ions, she could regain 70S70 S70S particles, but never 1005 or 1305 particles. Locate the Louisville and Nashville Railroad line just south of Hwy. Q. Step 3. b. fcontour (f) plots the contour lines of the function z = f (x,y) for constant levels of z over the default interval [-5 5] for x and y. fcontour (f,xyinterval) plots over the specified interval. Figure 3. Use the index contour just above the "m" in Temple Canyon for your initial spot. What is the relief of the area in the map? The figure above illustrates a depression and its representation using contour lines. vertical scales on your topographic profile are not the same. 2. Answers: 1 Show answers Another question on Biology. Show your work below. (The benchmarks have an "x" to locate the spot where the elevation was surveyed). Determine the height of Mount Price. 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. How contour lines show a pair of small hills On which date did a flood event have a recurrence interval of 0.5? Refer to the figure below and assume contour interval of 10 feet. (1 pt) Find Deadmans Lake (it is located close to Cheakamus River and south of Daisy Lake; refer to Figure 7-E8 which is a close up from the map area). They are usually mapped with small contour intervals. 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? 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? A contour interval is the vertical distance or difference in elevation between contour lines. A high relief. Convergent (Continent-Ocean or Ocean-Ocean). In which zone do the P wave velocities appear to be steadily increasing? A contour line is a line drawn on a topographic map to indicate ground elevation or depression. CONTOUR/SIGDIG= Sets the number of digits after the decimal point for contour labels; default is 2. What is the area of the slab? (measure the distance across the Pacific at 40 degrees north latitude- basically measure between Northern California and North Korea)? The overview section 7.4.2 provides useful background to help you answer questions 4 & 5. At the point where 2 contour lines would cross would have 2 different elevations which is impossible. which of the above geologic events is fifth in the sequence. Contour lines If the counter interval is 10 feet, which hill (a,b,c) when viewed from the base is 40 feet tall? (Answer to the nearest foot.) Write your answer in feet. Difference of annual-mean surface zonal wind stress (N m 2) computed as the simulation with flattened topography (FLAT) minus control (ALL) from ref. If you were standing at the washington monument what direction would you need to walk to get to the U.S. capitol building? "Contour" actually means "outline" in French, which is where the name comes from. General Why? shows the surface features, or topography of Earth or a certain area. Figure out math tasks Determine Contour Interval and Contour Line Values. For the following exercises, please refer to British Columbia Topographic Map 092G095 of the Mount Garibaldi area in southern BC. Orbiting spacecraft contain internal gyroscopes that are used to control their orientation. In the above figure, the dark lines with reading are index contour lines. How far (in Km) did the pole move in one year during this time period? 19. the archeologist determines that there is 16.7% of the parent isotope remaining in the cloth sample. the result from the nearest marked contour line. Comparable to figure 8 D-F in ref. A red "X" in Figure 9.5 marks a spot on a contour line along the shore of Baskahegan Lake, but the printed DEM doesn't say anything about its elevation. Step 1. Contour lines are used to show elevation on a topographic map. The direction of plate movement in the last 1.1 million years. In what direction was the main river flowing? Which of the following lakes has a shoreline that is most likely at an elevation between 10,240 and 10,320 feet above sea level? 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. through a particular interval. What does this type of drainage pattern indicate about the area? 2.The contour interval is 0.025 N m 2.The thick black contour is zero. separating in cm/year? TAs names: _______________ _______________. Mark Write your answer in feet. The smallest circles represent the Measure in centimeters the distance (Map Length) between the two points you recorded in the previous question. Usually there are different contour intervals for the different maps. In which stage of the cycle of stream erosion is this area? What would happen to the mantle rock at point X if water is added to it? https://openpress.usask.ca/app/uploads/sites/52/2018/08/SKtopomap_v2.pdf. Explain how you made this decision. Vertical tops of peaks, and some are marked with xs with numbers next to them. The distance between these areas is ~1.6 miles (measured along the curving distance of the non-magnified stream). available from: Open Geosciences. The equation used is: Tips In every map, on the right-hand bottom side, the contour interval is specified. This may be easier to determine by examining the tributaries to the main stream. On our map, point "P" lies between 3000 feet and 4000 feet contours . This plate boundary isn't as simple as the previous examples, meaning another nearby plate boundary directly influences it. Example Calculation of Contour Intervals: Factors Affecting Durability of Fiber Reinforced Concrete (FRC), Measuring Tape: Anatomy, Marking, and Steps to Measure, Tacheometric Surveying: Principle, Procedure, and Advantages, Types of Foundation for Buildings and their Uses [PDF], Compressive Strength of Concrete -Cube Test [PDF], Procedure, Results, 16 Types of Heavy Equipment Used in Construction, Calculate Quantities of Materials for Concrete -Cement, Sand, Aggregates, Methods of Rainwater Harvesting [PDF]: Components, Transportation, and Storage, Exploring the Impact of Construction Robots on the Industry, How to Maintain a Brick Chimney for Maximum Efficiency, A Shining Future: The Benefits of Solar Energy, What You Should Know Before Installing Mud Flooring. What can be said about level surfaces of \varphi? Calculate the contour interval between index contours, which are are the more prominent, bold-colored lines with the elevation marked on them. For this computation, the rise, or vertical ground distance, and run, or horizontal ground distance, are needed. Refer to Problem 14.1 for guidance. A thumbnail version of the map is shown in Figure 7-E10, 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. Go back to the location in Google Earth that you examined for question 36 (46 55 25.66 N 152 01 25.17 E). The shaded areas indicate the 95% confidence intervals. 225 feet; half the contour interval lower than 250 feet.