Which of the following places represent a Wadati-Benioff zone? 2. Creating B. Construct flow lines emanating from each point " x " to illustrate the groundwater flow field on the map. above or below it, multiplying by the contour interval, and adding or subtracting If the map has 40-foot contour intervals, then Point A is located at 3,000 feet, and Point B is located at 2,840 feet. Once your points are plotted on the graph paper, you simply connect the dots. The intersection between the landscape and the horizontal paper marks the location of the contour lines on a two-dimensional map. during a flood the river breached the natural levee flowing into the floodplain. look at a map of the Sulphur-Boundary Creek area along the Middle Fork of the The following are general characteristics of contour lines: 1. Terms and conditions apply. (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. 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. Then, find the difference in elevation between the two points. Answers: 1 Show answers Another question on Biology. Also no adds. characteristics of contour lines: 1. distance is found on the scale. 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? For this computation, the rise, or vertical ground distance, and run, or horizontal ground distance, are needed. Write your estimates for the elevation at each waypoint next to the waypoint. (1 pt) How much higher is Mount Price than Garibaldi Lake? What is Contour Interval? What is the dc saturation current? How to Calculate Contour Interval from Maps? refers to height in feet, or meters, above sea level). (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? Use the topographic map (Fig. 2009-2021 The Constructor. The vertical distance or difference in elevation between contour lines is known as a contour interval. 500/10=50 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). Map Hint: draw a simple map or a rough cross-section sketch to help illustrate your logic. f. Is the elevation of waypoint C > or < waypoint B? 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. Step 1. When the contour interval is not specified in the map, it can be calculated as explained in the following sections. 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? The Grand Canyon is an extraordinarily steep area. These features you are seeing are linear valleys. As a contour approaches a stream, canyon, or drainage area, the contour lines turn upstream. In which stage of the cycle of stream erosion is this area? 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). (5 pts) Figure 7-E4 shows five waypoints (A, B, C, D, and E) on a topographic map. An excerpt from a contour map is shown below. C. You can figure out the elevation of How far did the pole move? 2. fault. The rendition of this topography as an isoline (contour) map from an overhead perspective is shown directly below. (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. 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. amacrine cells b. photoreceptors c. bipolar cells d. retinal ganglion cells, In Figure 1.8, which of the following rock layers is. The speed the islands are sinking can be estimated by measuring the difference in elevation between two islands and dividing by the difference in their ages (this method assumes the islands were a similar size when they were active). So contour interval = 790 m-780 m=10 m. For further query, add a comment. A higher contour interval is used for a large area and small contour interval for small area. The selection of the contour interval is decided by the survey leader before the start of the mapping process depending upon the ground factors. Therefore: Rise = change in elevation = top (Point A elevation) minus bottom (Point B . 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. We further visualize the globally normalized responses of each convolution filter on the image of grating interval 6 in Figure 5 B. Considering the size of the area to be mapped, contour intervals are assumed. The small contour interval, the survey work and plotting have to be more accurate. The purpose of this lab is to familiarize students with how to read and use topographic maps. A map has index contours at 250m, 500m, and. A simple diagram is shown below on the left. Please refer to this Saskatoon topographic map to complete the next three questions. Contour lines tend to enclose the smallest areas on ridge tops, which are often narrow or very limited in spatial extent. What would cause two separate samples of pure water to have slightly different pH\mathrm{pH}pH values? Start climbing from the foot of a hill toward the top, this is called a rising slope (see Fig. Q. What type of plate tectonic boundary is at this exact location? 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? 13. 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. lowest line (which is 6760 feet, and not marked) has an elevation equal or greater which Geologic Law did you use to come to the conclusion you made in the previous question? 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. C. Submergence and deposition of sedimentary layers 10-13. A slope is the rise or fall of the land surface. 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. The number of contour lines in-between 7000 and 7100 are 4. A topographic profile is a cross-sectional view 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 . What is the relief of the area in the map? 1 What is the contour interval on this map? In Figure 9.4, what is the elevation of Malcome Bog? of paper along a line across the area where the profile is to be constructed. Mark Sensor stability as characterized through mean absolute differences (MARD) on every study day including only sensors inserted on study day 1. Contour lines please add a brief explanation thank you Location B is higher. What does this type of drainage pattern indicate about the area? What type of drainage pattern is present in this area? Overview section 7.3 provides background information on contour lines to prepare you for these exercises. 9. Contour Interval on Topographic Map. "Contour" actually means "outline" in French, which is where the name comes from. 250/5 = 50. Inspect the P wave velocities. A. Contour the water table data, using a contour interval of 10ft. What approximate discharge would be associated with a 50 year recurrence interval? Based on your answer to question 6 which of the following statements about the break-up of Pangaea is TRUE? 31. (measure the distance across the Pacific at 40 degrees north latitude- basically measure between Northern California and North Korea)? Now look farther south of Sloans Crossing at Hwy. 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). 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. The figure above illustrates various topographic features. In Figure 9.7, what is the elevation of the lowest point in the crater? They are marked with short, straight lines inside the circle. Assume that water flowed through these valleys at some time. a view of the landscape as seen from above. the profile line. V shaped. 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? how old is the sequence of rocks. How old is the burial site? Write your answer in feet. Where do the S wave velocities abruptly change? contour lines represent steep slopes, conversely, contour lines that are spaced 3. The final answer we get after dividing is the contour interval of the specific topographical map. along a line drawn through a portion of a topographic map. A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map. If the arrow is pointing toward the contour lines around your location, your location is a higher elevation than the index contour line. An error message is displayed. For the plotting of region, the contour intervals are presumed. Dont forget to add a contour line to the map legend! Widely separated contour lines indicate a gentle slope. A standard topographic map uses contour linesto express elevations above sea level and show the shape of the land. from the highest, and dividing the result by the horizontal distance. Practice questions on Topographic Maps, 5. Show your work! Examine the path of the river that feeds into and flows out of Quail Lake. This makes reading the map easier. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. At 2900 Km the S wave velocity falls to 0. Show that the streamlines of \nabla \varphi are orthogonal to the level surfaces of \varphi. Contour lines are used to show elevation on a topographic map. Measure the horizontal map distance between points A and B to get the vertical ground distance. 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. When a large area is to be mapped in small piece of paper contour intervals are used. (a) Suggest what the 100S100 \mathrm{~S}100S and 130S130 \mathrm{~S}130S particles might represent, in light of current knowledge of protein synthesis. Write your answer in feet. A slope is easy to recognize in a hilly area. As you look at the map, notice that the contour 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. The circled points indicate days that were at least partially spent at the study side; red circles indicate days with frequent sampling . The difference between adjacent contour lines. What is the elevation of the base of the monument in meters? Given that San Francisco is located on the North American Plate and Los Angles is located on the Pacific Plate, are these two cities getting closer together or farther apart over time? Write your answer in feet. What would happen to the mantle rock at point X if water is added to it? Observe your best fit line. Line 1 starts with the contour interval, not the projection point. Given that this portion of the Australian plate moves at a speed of 2.2 inches per year, how old are the snake fossils? tilting. You will receive a link and will create a new password via email. Legal. From the contour map, a profile can be drawn of the terrain. 18. What is the straight line distance between the 8996 b and the 7202 b benchmarks located north and northwest of Phelps Lake? 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. 1 ft = 24,000 ft, and 24,000 ft x (\(\frac{1\;km}{3280\;ft}\)) = 7.32 km. In the context of evolution through natural selection, explain why multicellular organisms have specialized exchange systems and surfaces. View Source. 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? Slope Worksheet (to be completed), Contact Us: NWCG Comments & Questions | USA.GOV | Notices | Accessibility | Copyrights | Linking Policy | Records Management | FAQs, M-581, Fire Program Management Course Steering Committee, M-582, AA Advanced Wildland Fire Course Steering Committee, Committee Roles and Membership Information, Course Steering Committee Guidance & Templates, International Association of Fire Chiefs Roster, National Association of State Foresters Roster, Alternative Pathways to NWCG Qualification, Wildland Fire Leadership Development Program, Table 5.3 Perimeter Estimation for Point Source Fires, Table 5.4 Area Estimation for Point Source Fires. How is the top of a mountain shown on a topographic map? The given point, 537', therefore, must lie between the 520' and 540' contours (contours aand b). The smallest circles represent the https://openpress.usask.ca/app/uploads/sites/52/2018/08/SKtopomap_v2.pdf. Salmon River This map is a geologic map of glacial geology in the area, drawn Set up the cancellation table so all units will cancel, except the desired unit, feet. Notice the tick marks pointing toward lower elevation. 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? up or down from the nearest index contour line and multiplying by the contour Measure the distance, using bar scale, between the pole in 1400 and 1500 (locations C and D). The Contour Interval of the above map us 20 Units. 50m. 31W. 15. (2 pts) What is the relief on this map? Refer to the figure below. How big is the base (area) of the washington monument in sq feet? (1 pt) If someone decided to climb Mount Price, what would be the easiest and safest route to take? What is the contour interval? 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? Lines or isolines on a map that connect points with the same elevation. Locate Little Sinking Creek in the southern portion of the map, north of Hwy. nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems . (1 pt) Garibaldi Creek is located east of Deadmans Lake (Figure 7-E8). What Is Contour Interval? slope percent = rise/run 100. If you decided to walk to from the monument to the white house how far would u have to walk in miles? What type of bedrock is present in this area? (The benchmarks have an "x" to locate the spot where the elevation was surveyed). Consider the ages and positions of the islands listed above along with what you know about plate tectonics and hotspots. Location B is higher. In what general direction is the Pacific Plate moving? Considering the above map, the steps involved in contour interval calculation are. A topographic map may or may not include shaded relief to help visualize steep slopes. Contour values are in feet. Index contours increase by 250. Contour lines For producing a detailed study of According to the geothermal gradient, rocks at 500 degrees Celsius will be buried how deep? What type of tectonic plates are present? D) Nothing. Upon adding divalent ions, she could regain 70S70 S70S particles, but never 1005 or 1305 particles. The distance between these areas is ~1.6 miles (measured along the curving distance of the non-magnified stream). MATLAB automatically selects the contour lines to display. Use the appropriate conversion factor to convert the horizontal map distance to horizontal ground distance. What does each contour line on a map show? Pick two contour lines that are next to each other and find the difference in associated numbers. Large contour interval is to be used if the time available for the survey work is less. Table of Contents and lab manual chapter pdf files for download, Overview of Canadian Geology and Mineral and Energy Resources, 4. Refer to the figure below and assume contour interval of 10 feet. be found. Contour interval calculator - A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a. . 10,500-10000=500 feet Between these two contour lines if we count, there are 10 counter lines. 3. points. On our map, point "P" lies between 3000 feet and 4000 feet contours . with the elevation of the contour it represents. Point D is marked at 10,000 elevation and the next label is marked as 10,500 elevation. They are usually mapped with small contour intervals. What is the area of the slab? In Figure 9.4, what is the elevation of the highest point on Hunt Ridge (keep in mind step #4 from the first question)? View the full answer. backward or by clicking on the arrows above and below the eye in the upper There are fossils such as Glossopteris and Lystrosaurus that are found in rocks in South America and Africa that indicate they were part of Pangaea approximately 200 million years ago. (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. 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. 0.5 in 24,000 in/in = 12,000 in The even spacing indicates the hill has a uniform slope. A contour is a line drawn on a map that joins points of equal height above sea level. vertical scales on your topographic profile are not the same. What is the elevation of the base in feet. Example 2- Draw a profile showing the elevations of the contours. 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). D 009 -800 N O a) 10 b) 20 D -600 -800 N a) 10 Ob) 20 c) 40 d) 50 Which point (A,B,C, D) has an elevation of 344 feet? To use the same interval for both x and y , specify xyinterval as a two-element vector of the form [min max]. Refer to the figure below and assume contour interval of 10 feet. Example 4- What is the slope percent in Exercise 2 above? Log in to TheConstructor to ask questions, answer peoples questions, write articles & connect with other people. Explain why. The contour interval is stated on every topographic map and is usually Clear up mathematic tasks. which isotopic system should they use. 9.4) to estimate the elevation of this point as accurately as possible. Note: The intervals are increasing, therefore, the contours indicate a hill. For example, if a location point is between the 150 feet and 200 feet contour lines than the elevation is 175 feet (1/2 of 50 feet is 25 feet; 25 feet added to 150=175 feet). Take that distance and divide it by the speed you calculated in question 3 to estimate when the next supercontinent will form. Contour intervals must be obeyed, therefore the contour line elevations can only be multiples of the contour interval . To show information. Calculate the stream gradient of Grape Creek in ft/mile. The Zone from 0-20 km represents the earths? Both A and B (20-2900 Km and 2900-5100 Km). scale on profile paper by labeling the horizontal lines corresponding to the What features would you expect to occur at this type of boundary? Thus, ais 520'; bis 540'. Its Calculation, Uses and When it is Required, Factors Affecting the Selection of Contour Interval. 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At 500 degrees Celsius, rocks will be buried to about _______ km depth. Sharp contour points indicate pointed ridges. 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. Why? The Wadati-Benioff zone is associated with which type of plate boundary? It is south of Mammoth Cave. 1. Hint- make sure to re-read the section on plate boundaries before answering! Was Carter Lake cut off before or after the state boundary between Nebraska and Iowa was drawn? Measure in centimeters the distance (Map Length) between the two points you recorded in the previous question. 7. The more closely spaced the (1 pt) Explain in a sentence how a ratio scale works. in Figure 9.4, what is the elevation of the intersection of U.S. Route 1 and Maine Route 6 in Topsfield? In a large map, index contour lines are less to keep it simple to read the map easily. How were you able to come to this conclusion? 6. Which of the following statements about them is true? A darker, heavier contour line that is labeled with an elevation. o drainage ' divide or watershed boundary 1000 ft -::-:: Contour interval 50 Feet Figure 12.5 Flow lines across a topographic surface. Topographic The river in this area has a rather particular pattern, what geologic process caused this? B. It is important for the farmer or irrigator to identify the slopes on the land. What are the different types of handrails used in bridges? Step-by-step explanation. What type of tectonic plates are present? Calculate how fast the Hawaiian Islands are sinking, by using the ages and elevations of Maui and Nihoa. Therefore, if you print it out in black and white please refer back to the electronic copy to avoid confusion. Join TheConstructor to ask questions, answer questions, write articles, and connect with other people. Answer the following questions about these waypoints, based on your best guess estimate of the elevation of each waypoint. USask GEOL 121 Rock & Mineral Quiz Information, 8. 31? Q. Contour lines never cross. 2.The contour interval is 0.025 N m 2.The thick black contour is zero. (1 pt) What is the ratio scale of this map? What is the elevation of the unlabeled index contour crossing Roaring Creek in the northwest corner of the map? Using the surrounding contour lines, what is the approximate elevation of Deadmans Lake? What does a contour interval mean - A contour interval is a vertical distance or the difference in the elevation between the two contour lines in a. . What factors control the course of this river? Answer: B. For consistency, assume that elevations between contour lines are 1/2 a contour interval higher than elevation of the lower line. In the early days of ribosome research, before the exact role of ribosomes was clear, a researcher made the following observation. See the example under CONTOUR/SPACING below. do not cross each other, divide or split. A person standing at point "F" would only be visible to a person standing at: Examine the figure below. Contour lines are used to show elevation on a topographic map. Write your answer in feet. slope percent = rise/run 100 To keep the contour map simple and easy to read, not every contour line is marked with its elevation reading. Why does the boundary depart from the river channel? If you were standing in the middle on the intermost contour line hill "c", your elevation would be. This content is subject to copyright. 200 feet. Use the index contour just above the "m" in Temple Canyon for your initial spot. They also show some features made by people such as brodges. Determine the elevation at Point A and Point B in the Figure 9 map below.
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