Determine the height of Mount Price. 12. Example 1- In the graphic below, what is the vertical distance between the contour lines? 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? Remember, because of isostasy the denser plate will be lower than the less dense plate. which of the above geologic events is fifth in the sequence. At 2900 Km the S wave velocity falls to 0. Where does it wind up? This plate boundary isn't as simple as the previous examples, meaning another nearby plate boundary directly influences it. Given that this portion of Pangaea broke apart 200,000,000 years ago, calculate how fast South America and Africa are 9. A rounded contour indicates a flatter or wider drainage or spur. What is the gradient? Question 14. It is important for the farmer or irrigator to identify the slopes on the land. do not cross each other, divide or split. Likewise the "40" contour connects depths of 40 ft below sea level and so on. he areas enclosed by contour lines at 5 m interval for a reservoir upto the face of the proposed dam are as shown below value of Contour lines 100,510l0,1015,1020,1025,1030,1035 Area (m2) 653/2 ,653, 653*2, 653*8, 653*18 ,653*25 , 653*40 Taking 1005m and 1035 m as the bottom most level and the highest water level achievable of the reservoir. 225 feet; half the contour interval lower than 250 feet. (2 pts) What is the relief on this map? indicate what information is contained on a topographic map, and where it can o drainage ' divide or watershed boundary 1000 ft -::-:: Contour interval 50 Feet Figure 12.5 Flow lines across a topographic surface. They are usually mapped with large contour intervals. far apart represent gentle slopes. If you were standing at the washington monument what direction would you need to walk to get to the U.S. capitol building? (in feet) between the two points. A slope is the rise or fall of the land surface. Locate the Louisville and Nashville Railroad line just south of Hwy. How far (in Km) did the pole move in one year during this time period? General In most maps, every fifth contour line is an index contour. Start climbing from the foot of a hill toward the top, this is called a rising slope (see Fig. Q. Use the appropriate conversion factor to convert the horizontal map distance to horizontal ground distance. View the full answer. Figure 2 is the cross section along line AB. Look closely at the topography south of highway, and it changes abruptly. TAs names: _______________ _______________. 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? What factors control the course of this river? during a flood the river breached the natural levee flowing into the floodplain. a. Based on your answer to question 6 which of the following statements about the break-up of Pangaea is TRUE? Contour lines do not cross each other, divide or split. Example 4- What is the slope percent in Exercise 2 above? Topographic Pick two contour lines that are next to each other and find the difference in associated numbers. In every map, on the right-hand bottom side, the contour interval is described. The Grand Canyon is an extraordinarily steep area. Absolutley amazing app and would definitely recommend. The steepest slope on this hill can be found on the side that is facing which direction? Which gas station is the most likely source of the gasoline leak? a) Label the elevation of every contour line on the map. The contour interval is stated on every topographic map and is usually Therefore, if you print it out in black and white please refer back to the electronic copy to avoid confusion. Contour values are in feet. What is the tolerance for compression test results of concrete, according to the standards? To take the difference, subtract the higher elevated line with the lower elevated line reading. It is usually every fifth line that indicates a change in elevation. Figure 6.13 | Coastal area topographic map. Please refer to this Saskatoon topographic map to complete the next three questions. Then, find the difference in elevation between the two points. Using the contour lines, determine the upstream direction of the creek. Now calculate the difference between the two-selected index contour line selected from a map. 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. As a contour approaches a stream, canyon, or drainage area, the contour lines turn upstream. What does each contour line on a map show? Among other things, a topographic map can be used to measure the average slope b. (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. Put simply, contour lines mark points of equal elevation on a map. Possible contours include 500', 520', 540', 560', 580', 600', 620', etc. Question 20. Both A and B (20-2900 Km and 2900-5100 Km). 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). 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? Because the stream flows south, contour a, which lies downstream of contour b, must be the lower of the two. Explain why. Location B is higher. Use the index contour just above the "m" in Temple Canyon for your initial spot. 1. Orbiting spacecraft contain internal gyroscopes that are used to control their orientation. Now draw contour lines on your map to represent the pyramid in three-dimensions on your map. Refer to the topographic map in Figure 7-E3 for an example of contour lines you can use to help you complete this question. According to your best fit line, what is the recurrence interval of such a discharge? 500/10=50 The circled points indicate days that were at least partially spent at the study side; red circles indicate days with frequent sampling . Observe the S wave velocities. What would happen to the mantle rock at point X if water is added to it? Upon adding divalent ions, she could regain 70S70 S70S particles, but never 1005 or 1305 particles. Lines or isolines on a map that connect points with the same elevation. When a large area is to be mapped in small piece of paper contour intervals are used. Would this be an easy location to maintain a railroad? The small contour interval, the survey work and plotting have to be more accurate. V shaped. be found. 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). These marked or labeled lines are known or termed as Index Contour Lines. In Figure 9.4, what is the elevation of the highest point on Farrow Mountain? All points on a contour line are at the same elevation. A profile may be constructed The lines point toward the center of the depression. To calculate the vertical exaggeration in the topographic profile shown in Figure 3.6 we divide the horizontal scale by the vertical scale: (\(\frac{\frac{1000\;ft}{1\;inch})}{(\frac{100\;ft}{inch}}) = 10\). The purpose of this lab is to familiarize students with how to read and use topographic maps. from the highest, and dividing the result by the horizontal distance. 31W. Examine the map below to answer the question. Why does the boundary depart from the river channel? Betwe View the full answer Transcribed image text: What is the contour interval for the figure below? Now difference between 7100 and 7000 is 7100 7000 = 100. Measure the gradient to the index contour past the word Creek (the last contour before it reaches Arkansas River). Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. A contour interval is the vertical distance or difference in elevation between contour lines. Why is mass so important to a stars life? 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. Horizontal The terms below What is the latitude on the northern edge of this rectangle? Write your answer in feet. Choose the appropriate profile below. 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. pressing down on the middle mouse wheel and moving the mouse forward and Clear up mathematic tasks. An error message is displayed. Q: Refer to figure 23.5. What is the elevation of the base of the monument in meters? scale on profile paper by labeling the horizontal lines corresponding to the Contour What color shows buildings, bridges and railroads? . Point D is marked at 10,000 elevation and the next label is marked as 10,500 elevation. The even spacing indicates the hill has a uniform slope. Refer to the figure below. 60 seconds. 750m. Convergent (Continent-Ocean or Ocean-Ocean). For 1:25 000 scale maps the interval between contours is usually 5 metres, although in mountainous regions it may be 10 metres. They then cross the stream and turn back along the opposite bank of the stream forming a "v". Its Calculation, Uses and When it is Required, Factors Affecting the Selection of Contour Interval. The contour music definition is the same definition in any medium such as visual art,. Contour lines Lines or isolines on a map that connect points with the same elevation. How far is that distance (0.56 miles) in Kms? available from: Open Geosciences. The distance between these areas is ~1.6 miles (measured along the curving distance of the non-magnified stream). Large contour interval is to be used if the time available for the survey work is less. Overview section 7.3 provides background information on contour lines to prepare you for these exercises. For small contour interval, the money required will also more as the field and office work will be more. What is the name of the family that contains beryllium? Index contours increase by 250. Calculate the stream gradient of Grape Creek in ft/mile. Refer to Problem 14.1 for guidance. A darker, heavier contour line that is labeled with an elevation. The numbered contour lines are the index contours; the unnumbered contour lines are the supplemental contours. What type of tectonic plates are present? 1 ft = 24,000 ft, and 24,000 ft x (\(\frac{1\;km}{3280\;ft}\)) = 7.32 km. What is Contour Interval? What is the relationship between the relief of an area and the contour interval on a map of he area? 2. The map has a contour interval of forty feet, slope percent = (120ft / 1000ft) 100 = 12% d. Is the elevation of waypoint D > or < waypoint C? Observe your best fit line. lines enclose smaller and smaller areas. When you join you get additional benefits. Mark Figure 7-E9 with a line to indicate the distance you used in your calculation. What feature(s) can you observe south of Hwy. Note: there is technically more than one correct answer for some of these questions. He wants to follow the easiest possible path, which means he needs to find the most gentle slope up the mountain. The difference between two adjacent contours is called the contour interval, which is 10 ft for the Figure 2-2 example. separating in cm/year? (1 pt) What is the longitude along the eastern edge of this rectangle? According to the geothermal gradient, rocks at 500 degrees Celsius will be buried how deep? 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. -- - . 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? The older unconformity is a Nonconformity, while the younger is a Disconformity. Compare the contour intervals from the Royal Gorge, Colorado map (map 5.1) to the Omaha N, Nebraska-Iowa map. Was Carter Lake cut off before or after the state boundary between Nebraska and Iowa was drawn? In which zone do the P wave velocities appear to be steadily increasing? If oceanic and continental crust collided, based on their densities the __________ crust would sink below the ________crust.

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