what is the contour interval for the figure below?

Measure in centimeters the distance (Map Length) between the two points you recorded in the previous question. This is a critical skill to prepare students to learn about more complex geologic maps. 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. . Notice the general shape of this feature. Geology Labs 1-6 (some questions and answers, Applications and Investigations In Earth Science, Dennis G. Tasa, Edward J. Tarbuck, Frederick K. Lutgens, Chapter 42: The Physician's Office Laboratory. The even spacing indicates the hill has a uniform slope. All points on a contour line are at the same elevation. o drainage ' divide or watershed boundary 1000 ft -::-:: Contour interval 50 Feet Figure 12.5 Flow lines across a topographic surface. What type of tectonic plates are present? any point by finding the nearest labeled line, counting the number of lines 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. 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. of paper along a line across the area where the profile is to be constructed. 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? Assume value is an integer variable. Description. The zone from 20-2900 Km represents the earth? For producing a detailed study of British Columbia Topographic Map 092G095. The small contour interval, the survey work and plotting have to be more accurate. One side of a copper block 5cm5 \mathrm{~cm}5cm thick is maintained at 250C250^{\circ} \mathrm{C}250C. Select the slope percent = rise/run 100. What type of plate tectonic boundary is present? Step 4. map. The equation used is: Tips In the above figure, the dark lines with reading are index contour lines. The height of an object above the surface of the sea. Given that this portion of the Australian plate moves at a speed of 2.2 inches per year, how old are the snake fossils? maps also have a vertical scale to allow the determination of a point in three The contour music definition is the same definition in any medium such as visual art,. Which gas station is the most likely source of the gasoline leak? A high relief. USask GEOL 121 Rock & Mineral Quiz Information, 8. exaggeration: This means every point on a contour line has the same altitude as that of the assumed intersecting surface. An excerpt from a contour map is shown below. 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. 3. on a map that are produced from connecting points of equal elevation (elevation Refer to Problem 14.1 for guidance. For consistency, assume that elevations between contour lines are 1/2 a contour interval higher than elevation of the lower line. 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. The figure above illustrates various topographic features. (1 pt) If someone decided to climb Mount Price, what would be the easiest and safest route to take? 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 commonly used contour interval is 20 feet for a 1:24,000 map scale. What type of bedrock is present in this area? USGS topographic maps also show many other kinds of geographic features including roads, railroads, rivers, streams, lakes, boundaries, place or feature names, mountains, and much more. The steepest path on a topographic Surface is always perpendicmar to topographic contour at the point where the flowline crosses the contour. See the example under CONTOUR/SPACING below. Expert Answer. Q. Then, find the difference in elevation between the two points. 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? What is the contour interval on a map based on? 16. To show information. Use the slope percent equation and solve. 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. The lowest contour line is at 200m. 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). During the flood event of 9/23/2009, the discharge measured at this gaging station was 21,200 cfs. What is the tolerance for compression test results of concrete, according to the standards? These marked or labeled lines are known or termed as Index Contour Lines. How old is the burial site? Map 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). It is usually every fifth line that indicates a change in elevation. Observe the velocities of waves on the graph. If the counter interval is 10 feet, which hill (a,b,c) when viewed from the base is 40 feet tall? Inspect the P wave velocities. 13. As you can see contour lines with 10 m interval. (1 pt) Garibaldi Creek is located east of Deadmans Lake (Figure 7-E8). (1 pt) Contour intervals located on this map are few and far between. Considering the map, the following steps are used to calculate the contour intervals calculation as follows . 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. (b) Why do you think reassociation to 1005 and 130 S particles did not work? Based on the assemblage of organisms (A-I) in this sample, what is the age of this rock? 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. What is the relief (difference in elevation) between Little Tomah Lake and the top of Tomah Mountain (look for "Tomah Mtn")? f. Connect the This is a graded activity, please submit it to your TA at the end of the lab. Information Therefore: Rise = change in elevation = top (Point A elevation) minus bottom (Point B . Index contours are bold or thicker lines that appear at every fifth contour line. Usually there are different contour intervals for the different maps. Also no adds. Please give your answer in grams/milliliter. Axons from which neuron in the retina make up the optic nerve? What is the relief between the surface of East Musquash Lake and the intersection between U.S. Route 1 and Maine Route 6 in Topsfield? nervous system and circulatory system endocrine and repertory system circulatory and respiratory systems nervous system and endocrine systems . Using the contour lines, determine the upstream direction of the creek. Note: there is technically more than one correct answer for some of these questions. The intersection between the landscape and the horizontal paper marks the location of the contour lines on a two-dimensional map. 12. the boundary follows the course of the river at the time it was drawn, the river has since moved. 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 . Why is mass so important to a stars life? Contour Interval on Topographic Map. Map Example Contour plots with Excel and Matplotlib Select the XYZ data arranged as a single range (Range I4:N8 in the data screenshot below). 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. e. Place the paper available from: Open Geosciences. So contour interval = 790 m-780 m=10 m. For further query, add a comment. 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. Write your answer in feet. Topographic a landform it is necessary to construct a topographic profile or cross-section What is the relationship between the relief of an area and the contour interval on a map of he area? 8,194,375 years to sink. Now look farther south of Sloans Crossing at Hwy. 3. What is the elevation of the base of the monument in meters? If the counter interval is 10 feet, which hill (a,b,c) when viewed from the base is 40 feet tall? 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). Controls the size of characters in the contour labels; default is 0.08". Measure the distance using the bar scale between the pole 1400 and 1700 (locations C and F). Lines or isolines on a map that connect points with the same elevation. -- - . Show your work below. What important discovery did the researcher miss? What would happen to the mantle rock at point X if water is added to it? Examine unconformities 1 and 2 indicated in Figure 1.9. The direction system is useful but imprecise. Remember, because of isostasy the denser plate will be lower than the less dense plate. S waves cant travel through liquids and this depth is where the liquid outer core exists. Contour lines tend to enclose the smallest areas on ridge tops, which are often narrow or very limited in spatial extent. 8. Index contour lines: Every fifth contour line is a thicker, "index" line.At some point along that line, its exact elevation is listed. What is the contour interval? When the contour interval is not specified in the map, it can be calculated as explained in the following sections. tops of peaks, and some are marked with xs with numbers next to them. 50m. Why is this so? It is important for the farmer or irrigator to identify the slopes on the land. First, we compute the activation . What is the straight line distance between the 8996 b and the 7202 b benchmarks located north and northwest of Phelps Lake? What type of drainage pattern would this area represent? distance is found on the scale. This content is subject to copyright. 2.The contour interval is 0.025 N m 2.The thick black contour is zero. What can be said about level surfaces of \varphi? Which one travels faster? above or below it, multiplying by the contour interval, and adding or subtracting From the contour map, a profile can be drawn of the terrain. What is the contour interval of the Figure 9 map (shown at the bottom of the page)? pressing down on the middle mouse wheel and moving the mouse forward and The Grand Canyon is an extraordinarily steep area. 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. . the archeologist determines that there is 16.7% of the parent isotope remaining in the cloth sample. which of the above geologic events is the seventh in the sequence? (Answer to the nearest foot.) What happens when the lithosphere at point X is heated to 1500 C? trend up valleys and form a "V" or a "U" where they cross (Hint: Speed= Distance/Time). (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. Closer distance indicates steep slope and wider distance gentle slope. Now calculate the difference between the two-selected index contour line selected from a map. slope percent = (120ft / 1000ft) 100 = 12% Index contours are prominent or dense lines that bob up at every 5th isometric line. 9. Start climbing from the foot of a hill toward the top, this is called a rising slope (see Fig. For all of the following figures, assume north is at the top of the map, and south at the bottom. 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 slope is easy to recognize in a hilly area. What type of tectonic plates are present? An error message is displayed. If you were to walk the path of a contour line in real life, you would remain at the same elevation the whole hike, never traveling up or down. be found. Contour intervals must be obeyed, therefore the contour line elevations can only be multiples of the contour interval . Forests across much of the United States are becoming denser. The final answer we get after dividing is the contour interval of the specific topographical map. 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. What is the change in elevation across each contour interval (i.e., between successive "regular" contours) on this map? Assume that water flowed through these valleys at some time. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. 31? Convergent (Continent-Ocean or Ocean-Ocean). Use a contour interval of 4 inches. What is the benchmark elevation at Sloans Crossing? You can figure out the elevation of What direction is the North American plate moving in comparison to the Pacific Plate at this location? How far apart are North America and Mainland Asia in cm? 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? f. Is the elevation of waypoint C > or < waypoint B? Contour line art is a method of drawing where you draw only the outline of an object, without any shading. It is impossible to determine which location is higher. For the plotting of region, the contour intervals are presumed. If you were standing in the middle on the intermost contour line hill "c", your elevation would be. If the river on this map is 1.93 miles long, what is the gradient for this river? 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? 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. 14. Hint- make sure to re-read the section on plate boundaries before answering! 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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. What type of stream drainage pattern is present on this map? A contour is a line drawn on a map that joins points of equal height above sea level. Vertical exaggeration is the effect that is created when the horizontal and You will receive a link and will create a new password via email. USask GEOL 121 Lab Final Exam Overview. Generally, there are various contour intervals for the various maps. Measure the horizontal map distance between points A and B to get the vertical ground distance. (2 pts) What is the relief on this map? These circular patterns indicate hilltops, like in the diagram below (Figure 3.6). The difference between two adjacent contours is called the contour interval, which is 10 ft for the Figure 2-2 example. You are tasked with creating your own coastal topographic map, so you hike around a coastal area with a GPS receiver (Global Positioning System) and every so often you record your position along with the elevation in metres at that point, which results in the map below (Map 7-E5).

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what is the contour interval for the figure below?