Axons from which neuron in the retina make up the optic nerve? Practice Questions on Geological Structures, 7. What is the term for the geologic feature called Carter Lake? First, we must identify the two contours that lie on either side of "P." In some cases the contours that we need are clearly labeled; however, in other instances, you will need to use the contour interval (1,000 feet, in this case) to "count" up or down from a labeled contour. Contour line art is a method of drawing where you draw only the outline of an object, without any shading. (2 pts) What is the gradient between Garibaldi Lake and Mount Price? What is the benchmark elevation at Sloans Crossing? of a hill (or hills). . Please refer to this Saskatoon topographic map to complete the next three questions. Lets assume, 7000 and 7100 and calculate the interval between it. with the labeled contour lines at the bottom of the profile paper and project Refer to the figure below. Show that the streamlines of \nabla \varphi are orthogonal to the level surfaces of \varphi. Examine the path of the river that feeds into and flows out of Quail Lake. Q. This may be easier to determine by examining the tributaries to the main stream. The horizontal map distance measures 0.5 inches. Possible contours include 500', 520', 540', 560', 580', 600', 620', etc. Observe the stream on the Omaha N, Nebraska-Iowa quadrangle. Give the elevation of the highest and lowest contour lines as well as the difference between them. 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. 2009-2021 The Constructor. 250/5 = 50. Write your answer in feet. Therefore, if you print it out in black and white please refer back to the electronic copy to avoid confusion. What are the different types of handrails used in bridges? Would this be an easy location to maintain a railroad? which of the following is the best way to obtain an absolute date for the sequence of rocks, the geologist determines there is 78.3% of the parent remaining in the sample that they examine. Example 2- Draw a profile showing the elevations of the contours. long-term time-average of sea level). Observe the S wave velocities. Note: elevation is metres above sea level; thus, sea level = ______ m. 2. What is the contour interval of the Figure 9 map (shown at the bottom of the page)? 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. The result is expressed in feet per mile (ft./mi.). (Hint: Speed= Distance/Time). which of the above geologic events is the seventh in the sequence? What is the gradient? Calculate how fast the Hawaiian Islands are sinking, by using the ages and elevations of Maui and Nihoa. Notice the general shape of this feature. General 8,194,375 years to sink. 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. 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 . 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? It is impossible to determine which location is higher. Upon adding divalent ions, she could regain 70S70 S70S particles, but never 1005 or 1305 particles. a) Label the elevation of every contour line on the map. 15. during a flood the river breached the natural levee flowing into the floodplain. Examine unconformities 1 and 2 indicated in Figure 1.9. The contour line is a line which defines the outline of an object. As you can see contour lines with 10 m interval. Keeping the abrupt topography change in mind, which of the following is true? 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. Using a contour interval of 40 m, label the elevation of every contour line on the map below. Step 1. For 1:25 000 scale maps the interval between contours is usually 5 metres, although in mountainous regions it may be 10 metres. A higher contour interval is used for a large area and small contour interval for small area. 0.5 in 24,000 in/in = 12,000 in Set up the cancellation table so all units will cancel, except the desired unit, feet. Chapter 3 Topographic Maps by Karen Tefend and Bradley Deline, CC BY-SA 4.0. Low gradient and abundant sediment supply. Divide the current maximum elevation of the Big Island by the rate you calculated in the previous question. Determine the height of Mount Price. If you trace the length of a line with your finger, each point you touch is the same height above sea level. (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. To show different features of Earth's surface. Dont forget to add a contour line to the map legend! What type of tectonic plates are present? Measure the distance, using bar scale, between the pole in 1400 and 1500 (locations C and D). (a) Suggest what the 100S100 \mathrm{~S}100S and 130S130 \mathrm{~S}130S particles might represent, in light of current knowledge of protein synthesis. 300 A. Refer to the figure below. any point by finding the nearest labeled line, counting the number of lines It will take approx. Calculate the contour interval between index contours, which are are the more prominent, bold-colored lines with the elevation marked on them. the boundary follows the course of the river at the time it was drawn, the river has since moved. The word contour comes from French, and it is defined as meaning the "outline" of a subject, it often defines a form or an. Mark Note: This lab is in colour. At the point where 2 contour lines would cross would have 2 different elevations which is impossible. When you join you get additional benefits. Streams/Rivers Escarpments/Cliffs To take the difference, subtract the higher elevated line with the lower elevated line reading. Lines or isolines on a map that connect points with the same elevation. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. How are the tops of hills, mountains or depressions (dips) shown on a topographic map? What is the latitude for the southeast corner of the map? Adjacent means next to. 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. within the sequence is a distinctive clay layer that under closer inspection is fine grained volcanic ash. 10,500-10000=500 feet Between these two contour lines if we count, there are 10 counter lines. Terms and conditions apply. A contour line is a line drawn on a topographic map to indicate ground elevation or depression. A topographic profile along the A - A' line is shown correctly in: What is the longitude for the northwest corner of the map? How contour lines show a pair of small hills To keep the contour map simple and easy to read, not every contour line is marked with its elevation reading. Consider the ages and positions of the islands listed above along with what you know about plate tectonics and hotspots. A map has index contours at 250m, 500m, and. Based on your answer to question 6 which of the following statements about the break-up of Pangaea is TRUE? Example 4- What is the slope percent in Exercise 2 above? A contour is a line drawn on a map that joins points of equal height above sea level. An incredible app, hundreds of features for every kind of math, and the best part is that it shows u what to do on each step and it explains each step, and, very little ads. A contour interval is a vertical distance or difference in elevation between contour lines. Question 14. Write your answer in feet. 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. 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. Melodic contour is the shape and sequence of movements of a melodic line. The gradient of a steam or river is determined by measuring a section of 1) The contour interval between contour is 40m. Please give your answer in grams/milliliter. These circular patterns indicate hilltops, like in the diagram below (Figure 3.6). Flood stage, or bankfull stage, on Sweetwater Creek occurs at a discharge of ~4,500 cfs. Which one travels faster? 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. What is the relief of the area in the map? 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) . d. Prepare a vertical 2. Because the stream flows south, contour a, which lies downstream of contour b, must be the lower of the two. The other side is covered with a layer of fiberglass 2.5cm2.5 \mathrm{~cm}2.5cm thick. The commonly used contour interval is 20 feet for a 1:24,000 map scale. Join now! Figure 6.13 | Coastal area topographic map. Zoom out and examine the surrounding area, what geological hazards are likely in the area? Use the index contour just above the "m" in Temple Canyon for your initial spot. 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. 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? Now difference between 7100 and 7000 is 7100 7000 = 100. The vertical distance or difference in elevation between contour lines is known as a contour interval. along a line drawn through a portion of a topographic map. Controls the size of characters in the contour labels; default is 0.08". Refer to Problem 14.1 for guidance. How far is that distance (0.56 miles) in Kms? 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? They also show some features made by people such as brodges. None of these. a landform it is necessary to construct a topographic profile or cross-section How were you able to come to this conclusion? This makes reading the map easier. Answer the following questions about these waypoints, based on your best guess estimate of the elevation of each waypoint. All contour lines are spaced at a 20 m contour interval. 3. A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map. Contour lines are used to show elevation on a topographic map. Description. A darker, heavier contour line that is labeled with an elevation. How is the top of a mountain shown on a topographic map? On this map, what is the change in elevation between two adjacent index contour lines? Hint: draw a simple map or a rough cross-section sketch to help illustrate your logic. Write your estimates for the elevation at each waypoint next to the waypoint. To determine the elevation of a point on a topographic map: The highest point of the rim of the crater is about 350. What type of drainage pattern would this area represent? 68 and south of the Edmonson County Line. In every map, on the right-hand bottom side, the contour interval is specified. Do Pole movements seem to be steady every 100 years or variable? Both A and B (20-2900 Km and 2900-5100 Km). Information For all of the following figures, assume north is at the top of the map, and south at the bottom. The figure on the right shows the 500 mb height map for December 9 with the position of a trough and ridge . Step 3. If the arrow is pointing toward the contour lines around your location, your location is a higher elevation than the index contour line. TAs names: _______________ _______________. These marked or labeled lines are known or termed as Index Contour Lines. What is the area of the slab? As an example, What is the physical state of a dry mantle rock at point X? - Table 8 . Show your work below. First, subtract the lower number from the higher number and then divide the result by the number of contour lines. All Rights Reserved. Contour lines that are very close together indicate a steep slope. Now calculate the difference between the two-selected index contour line selected from a map. Inspect the P wave velocities. 7. See the example under CONTOUR/SPACING below. refers to height in feet, or meters, above sea level). The height of an object above the surface of the sea. What is the contour interval on a map based on? 1. 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 . British Columbia Topographic Map 092G095. 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. It is south of Mammoth Cave. It is usually every fifth line that indicates a change in elevation. through a particular interval. If the counter interval is 10 feet, which hill (a,b,c) when viewed from the base is 40 feet tall? A rounded contour indicates a flatter or wider drainage or spur. She could find, in sedimentation experiments on bacterial lysates, not only 30S,50s30 \mathrm{~S}, 50 \mathrm{~s}30S,50s, and 70S70 \mathrm{~S}70S particles but also some particles that sedimented at about 100S100 S100S and 1305. What do close contour lines represent on a map? Considering the size of the area to be mapped, contour intervals are assumed. What is the latitude for this monument? What does each contour line on a map show? 30 seconds. All melodies have contours. Where do the P waves abruptly change? To show information. We further visualize the globally normalized responses of each convolution filter on the image of grating interval 6 in Figure 5 B. (b) Notice how a mountain saddle, a ridge, a stream, a steep area, and a flat area are shown with contour lines. MATLAB automatically selects the contour lines to display. Example 1- In the graphic below, what is the vertical distance between the contour lines? What is the straight line distance between the 8996 b and the 7202 b benchmarks located north and northwest of Phelps Lake? 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? maps also have a vertical scale to allow the determination of a point in three It is impossible to determine which location is higher. 6. Considering the map, the following steps are used to calculate the contour intervals calculation as follows . In what general direction is the Pacific Plate moving? Here two contour line, side by side are 790 m and 780 m. Between them there is no contour line. This is a graded activity, please submit it to your TA at the end of the lab. 12. (1 pt) Contour intervals located on this map are few and far between. BIOMEDICINE: Digestive System | Description o. Use a contour interval of 4 inches. Explain why. Comparable to figure 8 D-F in ref. 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. Location B is higher. It is a plane section of the three-dimensional graph of the function f parallel to the-plane. What type of drainage pattern is present in this area?
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