which of the above geologic events is seventh in the sequence. A low relief. (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. This is a graded activity, please submit it to your TA at the end of the lab. Thus, ais 520'; bis 540'. Contour Lines: Contour lines are used to determine elevations and are lines on a map that are produced from connecting points of equal elevation (elevation refers to height in feet, or meters, above sea level). What type of tectonic plates are present? 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. Refer to the figure below and assume contour interval of 10 feet. Hint- make sure to re-read the section on plate boundaries before answering! Please give your answer in grams/milliliter. along a line drawn through a portion of a topographic map. The Grand Canyon is an extraordinarily steep area. In Figure 9.4, what is the elevation of the highest point on Farrow Mountain? (b) Why do you think reassociation to 1005 and 130 S particles did not work? These marked or labeled lines are known or termed as Index Contour Lines. The column and row indices of Z are the x and y coordinates in the plane, respectively. As you can see contour lines with 10 m interval. lines enclose smaller and smaller areas. 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. Usually there are different contour intervals for the different maps. 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. elevation of each index contour line. When the contour interval is not specified in the map, it can be calculated as explained in the following sections. What type of stream drainage pattern is present on this map? - Table 8 . Contour lines do not cross each other, divide or split. This means every point on a contour line has the same altitude as that of the assumed intersecting surface. (2 pts) What is the ratio scale used on this map? These same fossils can be found in Australia, which indicates it, along with Antarctica, was also part of Pangaea at that time. 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. The final answer we get after dividing is the contour interval of the specific topographical map. A simple diagram is shown below on the left. Which one travels faster? Therefore: Rise = change in elevation = top (Point A elevation) minus bottom (Point B . the result from the nearest marked contour line. The outside of the fiberglass is maintained at 35C35^{\circ} \mathrm{C}35C, and the total heat flow through the copper-fiberglass combination is 52kW52 \mathrm{~kW}52kW. The vertical distance or difference in elevation between contour lines is known as a contour interval. on a map that are produced from connecting points of equal elevation (elevation 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? Learn more about how Pressbooks supports open publishing practices. (in feet) between the two points. Examine unconformities 1 and 2 indicated in Figure 1.9. 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. Vertical First Edition. 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. contour lines, the steeper the slope. fault. Locations A and B are at the same elevation. 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? Use the slope percent equation and solve. Q. Among other things, a topographic map can be used to measure the average slope To determine the %slope from Point A to Point B, the rise and run must first be determined. Why do you think then that only a 1-2 drops of indicator is used in an acid-base titration? 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. When a large area is to be mapped in small piece of paper contour intervals are used. Terms and conditions apply. What are the different types of handrails used in bridges? Use the index contour just above the "m" in Temple Canyon for your initial spot. exaggeration: Contour lines Lines or isolines on a map that connect points with the same elevation. The difference between Contour intervals and Horizontal Equivalent are tabulated below: Contour Lines and Its Types, Characteristics and Uses in Surveying. Provided is a topographic map of a hill with contour lines drawn showing elevation in meters. Explain why. USask GEOL 121 Rock & Mineral Quiz Information, 8. A rounded contour indicates a flatter or wider drainage or spur. Zoom out and examine the surrounding area, what geological hazards are likely in the area? Are streams in this area downcutting or laterally eroding? If the counter interval is 10 feet, which hill (a,b,c) when viewed from the base is 40 feet tall? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems . In the above figure, the dark lines with reading are index contour lines. What can be said about level surfaces of \varphi? Considering the size of the area to be mapped, contour intervals are assumed. As you look at the map, notice that the contour Considering the above map, the steps involved in contour interval calculation are. The difference between adjacent contour lines. (1 pt) Garibaldi Creek is located east of Deadmans Lake (Figure 7-E8). Determine the height of Mount Price. How far (in Km) did the pole move in one year during this time period? Where does it wind up? Widely separated contour lines indicate a gentle slope. do not cross each other, divide or split. Determine the direction of the slope (aspect) from the index contour line to your location by drawing an arrow from the index contour line to the next higher elevation contour line. A high relief. Orbiting spacecraft contain internal gyroscopes that are used to control their orientation. 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. f. Connect the Line 1 starts with the contour interval, not the projection point. 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? Write your answer in feet. The more closely spaced the 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. of a hill (or hills). A contour is a line drawn on a map that joins points of equal height above sea level. To calculate this divide the distance (in centimeters) between the two islands by the difference in their ages. What type of plate tectonic boundary is at this exact location? Contour lines that are far apart show what type of slope? Now look farther south of Sloans Crossing at Hwy. Consideration in making the choice of the proper contour interval . -- - . If oceanic and continental crust collided, based on their densities the __________ crust would sink below the ________crust. Vertical The horizontal map distance measures 0.5 inches. below cuts the mountain at equal intervals of elevation. Q. Dont forget to add a contour line to the map legend! on a topographic map base. Measure the gradient to the index contour past the word Creek (the last contour before it reaches Arkansas River). Lost your password? Source: Karla Panchuk (2020) CC BY-SA 4.0, adapted from Joyce M. McBeth (2018) CC BY-SA 4.0 (view source) and Brad Deline (2017) CC BY-SA 3.0 (view source). Scale: Maps come in a variety of scales, covering areas ranging from 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. (5 pts) 7. 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 difference between two adjacent contours is called the contour interval, which is 10 ft for the Figure 2-2 example. 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. You want to have the y-axis of the graph paper represent the elevations of the contour lines that intersect your drawn line (line A-B in this case). What is the straight line distance between the 8996 b and the 7202 b benchmarks located north and northwest of Phelps Lake? Now difference between 7100 and 7000 is 7100 7000 = 100. The older unconformity is a Nonconformity, while the younger is a Disconformity. What is the relief of the area in the map? (1 pt) Contour intervals located on this map are few and far between. 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. Expert Answer. In every map, on the right-hand bottom side, the contour interval is specified. What type of plate tectonic boundary is present? The height of an object above the surface of the sea. The given point, 537', therefore, must lie between the 520' and 540' contours (contours aand b). A contour interval is the vertical distance or difference in elevation between contour lines. What is the tolerance for compression test results of concrete, according to the standards? Contour Lines 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? In Figure 9.7, what is the elevation of the lowest point in the crater? Assume value is an integer variable. A topographic profile is a cross-sectional view 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. 3. How far did the pole move in meters in one year during this time period? This may be easier to determine by examining the tributaries to the main stream. A topographic profile along the A - A' line is shown correctly in: What is the longitude for the northwest corner of the map? Mark Figure 7-E9 with a line to indicate the distance you used in your calculation. fairmount. V shaped. far apart represent gentle slopes. Based on the map below, which location has a greater elevation, A or B? Show your work. 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. slope percent = rise/run 100. The overview section 7.4.2 provides useful background to help you answer questions 4 & 5. Step 2. 10,500-10000=500 feet Between these two contour lines if we count, there are 10 counter lines. Use the appropriate conversion factor to convert the horizontal map distance to horizontal ground distance. C. Submergence and deposition of sedimentary layers 10-13. index contour lines are generally darker and are marked with their elevations. with the labeled contour lines at the bottom of the profile paper and project The calculation of the contour intervals is as below: Firstly locate 2 index contour lines that are labeled with a specific elevation. What would happen to the mantle rock at point X if water is added to it? Then, find the difference in elevation between the two points. a stream or river and dividing the distance (in miles) into the vertical difference slope percent = rise/run 100 points. To take the difference, subtract the higher elevated line with the lower elevated line reading. What does each contour line on a map show? refers to height in feet, or meters, above sea level). 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 Contour Interval? To calculate the vertical exaggeration in the topographic profile shown in Figure 3.6 we divide the horizontal scale by the vertical scale: (\(\frac{\frac{1000\;ft}{1\;inch})}{(\frac{100\;ft}{inch}}) = 10\). (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. 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. So contour interval = 790 m-780 m=10 m. For further query, add a comment. 250/5 = 50. Using the surrounding contour lines, what is the approximate elevation of Deadmans Lake? Assume that water flowed through these valleys at some time. You can find out exactly how steep the View Source. of paper along a line across the area where the profile is to be constructed. Convergent (Continent-Ocean or Ocean-Ocean). Transcribed image text: Refer to the hydrologic map in Figure 14.5. 10. Its Calculation, Uses and When it is Required, Factors Affecting the Selection of Contour Interval. The zone from 5100-6400 represents the Earth's ? 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? Creating Refer to the figure below and assume contour interval of 10 feet. Join now! He wants to follow the easiest possible path, which means he needs to find the most gentle slope up the mountain. 68 and south of the Edmonson County Line. Find Sloans Crossing. https://openpress.usask.ca/app/uploads/sites/52/2018/08/SKtopomap_v2.pdf. In what general direction is the Pacific Plate moving? 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). Possible contours include 500', 520', 540', 560', 580', 600', 620', etc. Write your answer in feet. The contour interval is 20'. In a large map, index contour lines are less to keep it simple to read the map easily. How far did the pole move? lowest line (which is 6760 feet, and not marked) has an elevation equal or greater 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 word contour comes from French, and it is defined as meaning the "outline" of a subject, it often defines a form or an. Refer to Problem 14.1 for guidance. a. Also no adds. In this case, to find out the intermediate points elevation, contour intervals are used. contour (Z) creates a contour plot containing the isolines of matrix Z, where Z contains height values on the x - y plane. 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. Why would a smaller ratio scale be used for this map in comparison to the Garibaldi map? Calculate the contour interval between index contours, which are are the more prominent, bold-colored lines with the elevation marked on them. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. distance is found on the scale. In Figure 9.4, what is the elevation of the highest point on Hunt Ridge (keep in mind step #4 from the first question)? 50m. In the context of evolution through natural selection, explain why multicellular organisms have specialized exchange systems and surfaces. Observe the S wave velocities. 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 distance between these areas is ~1.6 miles (measured along the curving distance of the non-magnified stream). The number of contour lines in-between 7000 and 7100 are 4. which Geologic Law did you use to come to the conclusion you made in the previous question (figure 1.8)? 9. Measure in centimeters the distance (Map Length) between the two points you recorded in the previous question. What type of drainage does this appear to be? What does each contour line on a map show? Based on your answer to question 6 which of the following statements about the break-up of Pangaea is TRUE? Select the Keeping the abrupt topography change in mind, which of the following is true? All points on a contour line are at the same elevation. Where do the S wave velocities abruptly change? Note: elevation is metres above sea level; thus, sea level = ______ m. 2. The Zone from 0-20 km represents the earths? (1 pt) How much higher is Mount Price than Garibaldi Lake? On a topographic map, a contour line is a line that depicts ground elevation or depression. A contour interval is a vertical distance or difference in elevation between contour lines. What is the benchmark elevation at Sloans Crossing? Each contour line shows a different elevation. The commonly used contour interval is 20 feet for a 1:24,000 map scale. On most topographic maps, Which of the three proposed plate tectonic mechanisms would NOT occur at this location? for Interpreting Topographic Maps Lets assume, 7000 and 7100 and calculate the interval between it. Axons from which neuron in the retina make up the optic nerve? What is the change in elevation across each contour interval (i.e., between successive "regular" contours) on this map? Contour Interval on Topographic Map. Use the topographic map (Fig. 0.5 in 24,000 in/in = 12,000 in 1. As a contour approaches a stream, canyon, or drainage area, the contour lines turn upstream. Sharp contour points indicate pointed ridges. For small scale maps covering a wide area of varying terrain, For rough topographical map meant for initial assessment only, If a detailed map is to be prepared for execution work, If the ground has large variation in levels, for instance, hills and ponds, No measurement or scaling is required since the contour levels are indicated on the contour lines, The distance must be measured on the map and converted to actual distance by multiplying with the scale of the map, In a given map the contour interval is a constant, The horizontal equivalent varies with slope. What is the dc saturation current? 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. It is a plane section of the three-dimensional graph of the function f parallel to the-plane. Location A is higher. A. It is south of Mammoth Cave. If the topographic map in Figure 3.6 has a fractional scale of 1:12,000 then 1 inch is equal to 12,000 inches or 1000ft; this 1inch = 1000ft equivalency is for the horizontal scale. The following are general 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. (1 pt) Explain in a sentence how a ratio scale works. Figure 2 is the cross section along line AB. Sharp contour points indicate pointed ridges. The intervals +4tt and 4tt, then, respectively showed intervals ascending and descending from the tonal centre. a. amacrine cells b. photoreceptors c. bipolar cells d. retinal ganglion cells, In Figure 1.8, which of the following rock layers is. Pick two contour lines that are next to each other and find the difference in associated numbers. 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? Of the following dated flood events, which one would you expect to happen more often? In the early days of ribosome research, before the exact role of ribosomes was clear, a researcher made the following observation. 15. The figure above illustrates a depression and its representation using contour lines. If the river on this map is 1.93 miles long, what is the gradient for this river? To use the same interval for both x and y , specify xyinterval as a two-element vector of the form [min max]. Upon adding divalent ions, she could regain 70S70 S70S particles, but never 1005 or 1305 particles. Measure the distance, using bar scale, between the pole in 1400 and 1500 (locations C and D). 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. 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. Location B is higher. 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? Figure out math tasks Determine Contour Interval and Contour Line Values. Generally, there are various contour intervals for the various maps. Calculate the stream gradient of Grape Creek in ft/mile. You will receive a link and will create a new password via email. tilting. within the sequence is a distinctive clay layer that under closer inspection is fine grained volcanic ash. You can figure out the elevation of It is usually shown in or near the map's legend. . interval. On which date did a flood event have a recurrence interval of 0.5? Sometimes vertical exaggeration is desiredbut, in some cases, you may not want it. example. "Contour" actually means "outline" in French, which is where the name comes from. which means that every place between the marked 6800 foot line and the next What is the name of the family that contains beryllium? Please enter your email address. 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). 2. Which gas station is the most likely source of the gasoline leak? How old is the burial site? For this computation, the rise, or vertical ground distance, and run, or horizontal ground distance, are needed. Point D is marked at 10,000 elevation and the next label is marked as 10,500 elevation. dimensional space. from the highest, and dividing the result by the horizontal distance. Because the stream flows south, contour a, which lies downstream of contour b, must be the lower of the two. d. Prepare a vertical They are usually mapped with small contour intervals. If the counter interval is 10 feet, which hill (a,b,c) when viewed from the base is 40 feet tall? Contour lines that are close together show what type of slope? What is the relationship between the relief of an area and the contour interval on a map of he area? What is the profile view to Topographic Map #1? First, subtract the lower number from the higher number and then divide the result by the number of contour lines. 3. Please hand in this lab to your TAs at the end of the lab period. 2. a landform it is necessary to construct a topographic profile or cross-section shows the surface features, or topography of Earth or a certain area. Make sure to zoom out to get a good view of the relevant features. The contour lines in this figure are equally spaced. Example 2- Draw a profile showing the elevations of the contours. What is the physical state of a dry mantle rock at point X? Generally, there are totally distinct contour intervals for various maps. 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? Follow the creek along its path. What type of drainage pattern would this area represent? It will take approx. The other side is covered with a layer of fiberglass 2.5cm2.5 \mathrm{~cm}2.5cm thick. Note: there is technically more than one correct answer for some of these questions. Why is this so? Locate Little Sinking Creek in the southern portion of the map, north of Hwy. 40 feet. Please give your answer in grams/milliliter.
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