Please give your answer in grams/milliliter. According to the geothermal gradient, rocks at 500 degrees Celsius will be buried how deep? To solve a math problem, you need to figure out what information you have. How old is the burial site? This page titled 3.6: Drawing Contour Lines and Topographic Profiles is shared under a CC BY-SA license and was authored, remixed, and/or curated by Deline, Harris & Tefend (GALILEO Open Learning Materials) . Figure 7 . Sensor stability as characterized through mean absolute differences (MARD) on every study day including only sensors inserted on study day 1. be found. Q. b. Note where this would plot on your graph. At the point where 2 contour lines would cross would have 2 different elevations which is impossible. Contour lines make a v pattern as they cross streams and rivers, and the v always points towards the upstream direction. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. To illustrate what these hills look like in profile (or, how they would look if you saw them while standing on the ground and looking at them from a distance), you can draw what is known as a topographic profile. 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 . Each contour line shows a different elevation. . What approximate discharge would be associated with a 50 year recurrence interval? What is the relationship between the relief of an area and the contour interval on a map of he area? Transcribed image text: Refer to the hydrologic map in Figure 14.5. shows the surface features, or topography of Earth or a certain area. 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. https://openpress.usask.ca/app/uploads/sites/52/2018/08/SKtopomap_v2.pdf. An excerpt from a contour map is shown below. Figure 4: Reading Contour Maps . Generally, there are totally distinct contour intervals for various maps. How were you able to come to this conclusion? (Answer to the nearest foot.) Answer: B. 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. Likewise the "40" contour connects depths of 40 ft below sea level and so on. Measure the horizontal map distance between points A and B to get the vertical ground distance. Follow the creek along its path. How far (in Km) did the pole move in one year during this time period? along a line drawn through a portion of a topographic map. Note: there is technically more than one correct answer for some of these questions. Locations A and B are at the same elevation. In a large map, index contour lines are less to keep it simple to read the map easily. Indicators themselves are weak acids or weak bases. Using the surrounding contour lines, what is the approximate elevation of Deadmans Lake? Index contours increase by 250. For a relief map the contour interval is frequently persistent. What type of plate tectonic boundary is present? 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? Sharp contour points indicate pointed ridges. Locations A and B are at the same elevation. Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes. map. 6. What type of tectonic plates are present? When you join you get additional benefits. through a particular interval. These circular patterns indicate hilltops, like in the diagram below (Figure 3.6). the entire earth to a city block (or less). 400 D. N a) point A 00 D. N a) point A b) point D c) point B d) point They also show elevation. it shows natural features such as rivers and lakes. A high relief. - Table 8 . See the example under CONTOUR/SPACING below. 2. 1. In Figure 9.7, what is the elevation of the lowest point in the crater? Example 2- Draw a profile showing the elevations of the contours. The direction system is useful but imprecise. Refining interval counts to include these produced Figure 7 and - Table 8, below. Now calculate the difference between the two-selected index contour line selected from a map. Contour intervals must be obeyed, therefore the contour line elevations can only be multiples of the contour interval . The figure on the right shows the 500 mb height map for December 9 with the position of a trough and ridge . How fast was the Pacific plate moving from 7.2 million years ago to 4.7 million years ago between the formation of Kauai and Nihoa in cm/year? Write your answer in feet. Considering the size of the area to be mapped, contour intervals are assumed. They also show some features made by people such as brodges. The contour interval is stated on every topographic map and is usually Considering the above map, the steps involved in contour interval calculation are. (10 pts) Imagine you are a geologist working for the Geological Survey of Canada. the archeologist determines that there is 16.7% of the parent isotope remaining in the cloth sample. When she treated such a mixture with EDTA, everything dissociated to 30S30 \mathrm{~S}30S and 50s50 \mathrm{~s}50s particles. the result from the nearest marked contour line. Examine the path of the river that feeds into and flows out of Quail Lake. What is the term for the geologic feature called Carter Lake? Topographic 9.4) to estimate the elevation of this point as accurately as possible. B. Refer to Problem 14.1 for guidance. Now draw contour lines on your map to represent the pyramid in three-dimensions on your map. How and why do we divide stars into groups by mass? Note: elevation is metres above sea level; thus, sea level = ______ m. 2. The headings indicate the direction the Pacific Plate is moving over the hot spot. vertical scales on your topographic profile are not the same. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. To show different features of Earth's surface. Please hand in this lab to your TAs at the end of the lab period. Closely spaced These same fossils can be found in Australia, which indicates it, along with Antarctica, was also part of Pangaea at that time. The difference in elevation between one contour line and the next. Which of the following places represent a Wadati-Benioff zone? 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\)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\), Answers to Practice Lab Exercises, Parts A and B, status page at https://status.libretexts.org, Contour lines represent lines connecting points of equal elevation above sea level, Contour lines never cross, split, or die off, Contour intervals must be obeyed, therefore the contour lineelevations can only be multiples of the contour interval. Math can be challenging, but with a little practice, it can be easy to clear up math tasks. think about the drainage pattern you selected in the previous answer - what does this tell you about the underlying rocks? 200 feet. Controls the size of characters in the contour labels; default is 0.08". 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? a stream or river and dividing the distance (in miles) into the vertical difference Absolutley amazing app and would definitely recommend. Find Sloans Crossing. 3. 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. Once your points are plotted on the graph paper, you simply connect the dots. Also no adds. It is impossible to determine which location is higher. Scale (contour interval): All maps have a horizontal scale. In which stage of the cycle of stream erosion is this area? 1 ft = 24,000 ft, and 24,000 ft x (\(\frac{1\;km}{3280\;ft}\)) = 7.32 km. Both A and B (20-2900 Km and 2900-5100 Km). e. Place the paper To calculate the vertical exaggeration in the topographic profile shown in Figure 3.6 we divide the horizontal scale by the vertical scale: (\(\frac{\frac{1000\;ft}{1\;inch})}{(\frac{100\;ft}{inch}}) = 10\). Possible contours include 500', 520', 540', 560', 580', 600', 620', etc. For producing a detailed study of Step 3. 10,500-10000=500 feet Between these two contour lines if we count, there are 10 counter lines. In which stage of the cycle of stream erosion is this area? If you go from the river at (36 05 35.38 N 113 14 43.70 W) Straight up north the canyon rim Which is the code used for the design of the RCC Bridge? slope percent = rise/run 100. Contour lines are used to show elevation on a topographic map. As you can see contour lines with 10 m interval. 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. Use the index contour just above the "m" in Temple Canyon for your initial spot. Vertical Choose the appropriate profile below. The overview section 7.4.2 provides useful background to help you answer questions 4 & 5. The gradient of a steam or river is determined by measuring a section of 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 benchmarks have an "x" to locate the spot where the elevation was surveyed). Calculate the stream gradient of Grape Creek in ft/mile. You can figure out the elevation of which means that every place between the marked 6800 foot line and the next How far did the pole move? f. Is the elevation of waypoint C > or < waypoint B? Example 1- In the graphic below, what is the vertical distance between the contour lines? For all of the following figures, assume north is at the top of the map, and south at the bottom. The terms below Write your answer in feet. For consistency, assume that elevations between contour lines are 1/2 a contour interval higher than elevation of the lower line. If the numbers associated with the contour lines are decreasing, there is a decrease in elevation. To construct a profile, you need graph paper, a ruler, and a pencil. To calculate this divide the distance (in centimeters) between the two islands by the difference in their ages, Examine the headings of the measurements that you took for the previous two questions. characteristics of contour lines: 1. How far is that distance (0.56 miles) in Kms? 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. Adapted by Joyce M. McBeth, Sean W. Lacey, & Tim C. Prokopiuk (2018) University of Saskatchewan from Deline B, Harris R, & Tefend K. (2015) Laboratory Manual for Introductory Geology. 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. A topographic profile along the A - A' line is shown correctly in: What is the longitude for the northwest corner of the map? We further visualize the globally normalized responses of each convolution filter on the image of grating interval 6 in Figure 5 B. 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. Mountain/Hill Depressions backward or by clicking on the arrows above and below the eye in the upper hillslope: Determining Notice the tick marks pointing toward lower elevation. In which direction does it flow? For example, the first hill on the left has a top contour line of 50ft. Closer distance indicates steep slope and wider distance gentle slope. Therefore, if you print it out in black and white please refer back to the electronic copy to avoid confusion. The Zone from 0-20 km represents the earths? Transcribed image text: If you decided to walk to from the monument to the white house how far would u have to walk in miles? Here two contour line, side by side are 790 m and 780 m. Between them there is no contour line. right hand portion of the window. Where does it wind up? trend up valleys and form a "V" or a "U" where they cross A mountaineer is planning an expedition. Generally, there are various contour intervals for the various maps. The image to the left shows a perspective view of a river mouth at the head of a valley between a steep cliff (to the left) and a smoother slope (to the right). Answer the following questions about these waypoints, based on your best guess estimate of the elevation of each waypoint. To use the same interval for both x and y , specify xyinterval as a two-element vector of the form [min max]. (1 pt) How much higher is Mount Price than Garibaldi Lake? The rendition of this topography as an isoline (contour) map from an overhead perspective is shown directly below. Refer to the figure below and assume contour interval of 10 feet. Lost your password? The distance between these areas is ~1.6 miles (measured along the curving distance of the non-magnified stream). What is the latitude on the northern edge of this rectangle? CONTOUR/SIGDIG= Sets the number of digits after the decimal point for contour labels; default is 2. If you were standing at the washington monument what direction would you need to walk to get to the U.S. capitol building? a landform it is necessary to construct a topographic profile or cross-section What is Contour Interval? (in feet) between the two points. The steepest slope on this hill can be found on the side that is facing which direction? Explain why. 1 What is the contour interval on this map? than 6760 feet, but less than 6800 feet. points. A higher contour interval is used for a large area and small contour interval for small area. Description. 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. See example under CONTOUR/SPACING below. It is usually every fifth line that indicates a change in elevation. how old is the sequence of rocks. 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? (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). How contour lines show a pair of small hills Salmon River This map is a geologic map of glacial geology in the area, drawn Use a contour interval of 4 inches. Why would a smaller ratio scale be used for this map in comparison to the Garibaldi map? What type of drainage does this appear to be? When you join you get additional benefits. 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). Assume that water flowed through these valleys at some time. In the context of evolution through natural selection, explain why multicellular organisms have specialized exchange systems and surfaces. To calculate this divide the distance (in centimeters) between the two islands by the difference in their ages. Topographic Refer to the figure below. A contour interval is a vertical distance or the difference in the elevation between the two contour lines in a topographical map. Index contours are bold or thicker lines that appear at every fifth contour line. Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. contour (X,Y,Z) specifies the x and y coordinates for the values . Q. index contour lines are generally darker and are marked with their elevations. 3. Notice the general shape of this feature. To take the difference, subtract the higher elevated line with the lower elevated line reading. The Grand Canyon is an extraordinarily steep area. What type of drainage pattern would this area represent? 15. A person standing at point "F" would only be visible to a person standing at: Examine the figure below. look at a map of the Sulphur-Boundary Creek area along the Middle Fork of the It is south of Mammoth Cave. (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. Note: This lab is in colour. First, we compute the activation . Point D is marked at 10,000 elevation and the next label is marked as 10,500 elevation. The run is 1000 feet and the rise in elevation is 120 feet. (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. The highest point on a topographic map is marked as 345m. long-term time-average of sea level). Why is mass so important to a stars life? topographic profiles: Remember that topographic maps represent Now difference between 7100 and 7000 is 7100 7000 = 100. As you look at the map, notice that the contour The lines point toward the center of the depression. 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. A rounded contour indicates a flatter or wider drainage or spur. Which gas station is the most likely source of the gasoline leak? Examine the map below to answer the question. (1 pt) Mount Price is located next to Garibaldi Lake (just west of Table Bay, Figure 7-E9 above). Q-What is the contour interval for the topographic map shown below?Ans-Contour interval is the vertical distance between two adjacent contour lines on . 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? What is the contour interval? In Figure 1.9, which of the following geologic structures is. 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 physical state of a dry mantle rock at point X? (1 pt) If someone decided to climb Mount Price, what would be the easiest and safest route to take? 18. Contour lines are used to show elevation on a topographic map. Contour What direction is the North American plate moving in comparison to the Pacific Plate at this location? Given that this portion of the Australian plate moves at a speed of 2.2 inches per year, how old are the snake fossils? The vertical distance or difference in elevation between contour lines is known as a contour interval. Scale: Maps come in a variety of scales, covering areas ranging from which Geologic Law did you use to come to the conclusion you made in the previous question (figure 1.8)? Contour lines that are far apart show what type of slope? contour lines, the steeper the slope. The river in this area has a rather particular pattern, what geologic process caused this? Line 1 starts with the contour interval, not the projection point. In Figure 9.4, what is the elevation of the highest point on Hunt Ridge (keep in mind step #4 from the first question)? in Figure 9.4, what is the elevation of the intersection of U.S. Route 1 and Maine Route 6 in Topsfield? What is the contour interval of the Figure 9 map (shown at the bottom of the page)? All Rights Reserved. Is the school likely to be at risk of contamination from this same leak? Expert Answer. Zoom out and examine the area, what other type of boundary is nearby? Based on the map below, which location has a greater elevation, A or B? In most maps, every fifth contour line is an index contour. Log in to TheConstructor to ask questions, answer peoples questions, write articles & connect with other people. Write your answer in feet. They are usually mapped with small contour intervals. You can find out exactly how steep the 2. (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? Each dot represents an elevation number, spaced evenly at 100 m in the horizontal. What is the name of the family that contains beryllium? Look closely at the topography south of highway, and it changes abruptly. Q. C. Was Carter Lake cut off before or after the state boundary between Nebraska and Iowa was drawn? In the early days of ribosome research, before the exact role of ribosomes was clear, a researcher made the following observation. The horizontal distance between two points on two consecutive contour lines for a given slope is known as horizontal equivalent. On large-scale maps with a lot of topographical detail, the contour interval is usually smaller, while on small-scale maps with less detail, the contour interval is larger. Contour line art is a method of drawing where you draw only the outline of an object, without any shading.