Select the Location B is higher. USask GEOL 121 Rock & Mineral Quiz Information, 8. Show your work below. Would this be an easy location to maintain a railroad? 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. How far did the pole move in meters in one year during this time period? Usually there are different contour intervals for the different maps. What type of bedrock is present in this area? 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. Closely spaced 1) The contour interval between contour is 40m. What is the tolerance for compression test results of concrete, according to the standards? What is the contour interval of the Figure 9 map (shown at the bottom of the page)? What is the physical state of a dry mantle rock at point X? Find Sloans Crossing. The figure above illustrates various topographic features. 3. The horizontal distance between two points on two consecutive contour lines for a given slope is known as horizontal equivalent. To take the difference, subtract the higher elevated line with the lower elevated line reading. In Figure 9.7, what is the elevation of the lowest point in the crater? b. 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? Lines or isolines on a map that connect points with the same elevation. Therefore: Rise = change in elevation = top (Point A elevation) minus bottom (Point B . Write your answer in feet. 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 the following dated flood events, which one would you expect to happen more often? of a hill (or hills). What type of drainage does this appear to be? How to Calculate Contour Interval from Maps? Is the church likely to be at risk of contamination from this same leak? A topographic profile along the A - A' line is shown correctly in: What is the longitude for the northwest corner of the map? Learn more about how Pressbooks supports open publishing practices. How big is the base (area) of the washington monument in sq feet? What is the contour interval? 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Topographic The highest point on a topographic map is marked as 345m. 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? View Source. Stream Observe your best fit line. think about the drainage pattern you selected in the previous answer - what does this tell you about the underlying rocks? What is the term for the geologic feature called Carter Lake? 7. Widely separated contour lines indicate a gentle slope. 1. Contour plots with Excel and Matplotlib Select the XYZ data arranged as a single range (Range I4:N8 in the data screenshot below). Usually there are different contour intervals for the different maps. Write your answer in feet. 1 What is the contour interval on this map? Pick two contour lines that are next to each other and find the difference in associated numbers. (b) Why do you think reassociation to 1005 and 130 S particles did not work? 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. Please refer to this Saskatoon topographic map to complete the next three questions. B. (1 pt) Garibaldi Creek is located east of Deadmans Lake (Figure 7-E8). Does your topographic profile show any peaks or valleys? To determine the %slope from Point A to Point B, the rise and run must first be determined. how old is the sequence of rocks. Look closely at the topography south of highway, and it changes abruptly. Each dot represents an elevation number, spaced evenly at 100 m in the horizontal. All contour lines are spaced at a 20 m contour interval. Which of the three proposed plate tectonic mechanisms would NOT occur at this location? look at a map of the Sulphur-Boundary Creek area along the Middle Fork of the Scale (contour interval): All maps have a horizontal scale. How far is that distance (0.56 miles) in Kms? The shaded areas indicate the 95% confidence intervals. Control of the body is accomplished by which of the following body systems? Calculate the contour interval between index contours, which are are the more prominent, bold-colored lines with the elevation marked on them. In what direction was the main river flowing? Which gas station is the most likely source of the gasoline leak? "Contour" actually means "outline" in French, which is where the name comes from. Write out the longitude for each designated point as was done for Point A Write out the longitude for each designated point as was done for Point A A: Longitudes for the given points are explanied below It is impossible to determine which location is higher. What important discovery did the researcher miss? 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. 13. which Geologic Law did you use to come to the conclusion you made in the previous question (figure 1.8)? They also show some features made by people such as brodges. Compare the contour intervals from the Royal Gorge, Colorado map (map 5.1) to the Omaha N, Nebraska-Iowa map. as sinkholes, underlying soluble rock was dissolved and area collapsed. Contour Lines The difference in elevation between the highest and lowest points in the area on the map. The zone from 5100-6400 represents the Earth's ? Q. What direction is the North American plate moving in comparison to the Pacific Plate at this location? Map (1 pt) Contour intervals located on this map are few and far between. If the user enters 3.14 in response to the following programming statement, what will be stored in value? A simple diagram is shown below on the left. To solve a math problem, you need to figure out what information you have. above or below it, multiplying by the contour interval, and adding or subtracting refers to height in feet, or meters, above sea level). Using the surrounding contour lines, what is the approximate elevation of Deadmans Lake? How does the direction of motion of the Pacific Plate during the last 1.1 million years differ from direction of movement between 4.7 and 7.2 million years ago? Convergent (Continent-Ocean or Ocean-Ocean). What is the latitude for this monument? Observe the S wave velocities. Using a contour interval of 40 m, label the elevation of every contour line on the map below. The following are general The column and row indices of Z are the x and y coordinates in the plane, respectively. A slope is the rise or fall of the land surface. This content is subject to copyright. On a topographic map, a contour line is a line that depicts ground elevation or depression. a landform it is necessary to construct a topographic profile or cross-section To avoid having your profile distorted so that it accurately conveys what the surface of the Earth really looks like in profile, you will want both the vertical and horizontal scales to match. 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? 19. map. tops of peaks, and some are marked with xs with numbers next to them. The Zone from 0-20 km represents the earths? 17. Observe the stream on the Omaha N, Nebraska-Iowa quadrangle. Which is the code used for the design of the RCC Bridge? fairmount. 2. To calculate the vertical exaggeration in the topographic profile shown in Figure 3.6 we divide the horizontal scale by the vertical scale: (\(\frac{\frac{1000\;ft}{1\;inch})}{(\frac{100\;ft}{inch}}) = 10\). A profile may be constructed 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. Transcribed image text: Refer to the hydrologic map in Figure 14.5. Make sure to zoom out to get a good view of the relevant features. It is important for the farmer or irrigator to identify the slopes on the land. Once your contour lines are drawn, you will notice that you had to draw some lines closer together in some areas and wider apart in other areasand that you may have even enclosed an area by drawing a contour line in a circular pattern. (1 pt) If someone decided to climb Mount Price, what would be the easiest and safest route to take? The zone from 2900-5100 represents the Earth's ? Show your work. The image to the left shows a perspective view of a river mouth at the head of a valley between a steep cliff (to the left) and a smoother slope (to the right). Axons from which neuron in the retina make up the optic nerve? 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. What are the different types of handrails used in bridges? It is south of Mammoth Cave. please add a brief explanation thank you on a map that are produced from connecting points of equal elevation (elevation Divide the current maximum elevation of the Big Island by the rate you calculated in the previous question. 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. If you decided to walk to from the monument to the white house how far would u have to walk in miles? (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? 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). Choose the appropriate profile below. Index contours are bold or thicker lines that appear at every fifth contour line. The contour interval is 20 meters ( Figure 10-2 ), thus each one of the intermediate contour lines crossed to get to point (a) adds 20 meters to the 500-meter index contour line. Clear up mathematic tasks. Locations A and B are at the same elevation. Each contour line shows a different elevation. a geologist is trying to date a sequence of sedimentary rocks with abundant fossils and sandstones. Show that the streamlines of \nabla \varphi are orthogonal to the level surfaces of \varphi. During the flood event of 9/23/2009, the discharge measured at this gaging station was 21,200 cfs. Refer to the figure below and assume contour interval of 10 feet. If you examine the graph showing the topographic profile in Figure 3.6, can you imagine what would happen to your profile if we changed the spacing for elevations on the y-axis? According to your best fit line, what is the recurrence interval of such a discharge? 30 seconds. None of these. 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? 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). 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). In the above figure, the dark lines with reading are index contour lines. He wants to follow the easiest possible path, which means he needs to find the most gentle slope up the mountain. How contour lines show a pair of small hills Now look farther south of Sloans Crossing at Hwy. Notice the general shape of this feature. which isotopic system should they use. The final answer we get after dividing is the contour interval of the specific topographical map. How were you able to come to this conclusion? which of the above geologic events is the second in the sequence, which of the above geologic events is the fifth in the sequence. Australia and Antarctica separated after the break-up of Pangaea. If you trace the length of a line with your finger, each point you touch is the same height above sea level. What type of drainage pattern would this area represent? What does each contour line on a map show? Gradient: Stream gradient can also be determined from a topographic As a contour approaches a stream, canyon, or drainage area, the contour lines turn upstream. The Grand Canyon is an extraordinarily steep area. If the river on this map is 1.93 miles long, what is the gradient for this river? Line 1 starts with the contour interval, not the projection point. scale on profile paper by labeling the horizontal lines corresponding to the They are usually mapped with small contour intervals. Based on the map below, which location has a greater elevation, A or B? The following are general characteristics of contour lines: 1. contour lines represent steep slopes, conversely, contour lines that are spaced (2 pts) What is the ratio scale used on this map? Example 2- Draw a profile showing the elevations of the contours. a view of the landscape as seen from above. . How are the tops of hills, mountains or depressions (dips) shown on a topographic map? You can figure out the elevation of The difference between adjacent contour lines. Mathematically, a contour line is a curve in two dimensions on which the value of a function f (x, y) is a constant. C. For a relief map the contour interval is frequently persistent. Figure 3. See example under CONTOUR/SPACING below. The number of contour lines in-between 7000 and 7100 are 4. What feature(s) can you observe south of Hwy. Note: there is technically more than one correct answer for some of these questions. a. A low relief. through a particular interval. What is the elevation of the unlabeled index contour crossing Roaring Creek in the northwest corner of the map? 250/5 = 50. examine the unconformity shown in figure 1.10. what type of unconformity is this? At the point where 2 contour lines would cross would have 2 different elevations which is impossible. If you were standing at the washington monument what direction would you need to walk to get to the U.S. capitol building? slope percent = rise/run 100 contour (X,Y,Z) specifies the x and y coordinates for the values . Forests across much of the United States are becoming denser. The calculation of the contour intervals is as below: Firstly locate 2 index contour lines that are labeled with a specific elevation. Comparable to figure 8 D-F in ref. Given that this portion of the Australian plate moves at a speed of 2.2 inches per year, how old are the snake fossils? A higher contour interval is used for a large area and small contour interval for small area. 400 D. N a) point A 00 D. N a) point A b) point D c) point B d) point Step 3. If so, what are the corresponding highest and lowest elevations? 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. Step 2. When the vertical dimension of your graph is different from the horizontal dimension on your map, you may end up with a graph that shows a vertical exaggerationand the features of the Earth represented by your topographic profile may be deformed such as in Figure 3.7. Slope Worksheet- Use the information from the example above and complete the slope worksheet. hillslope: index contour lines are generally darker and are marked with their elevations. topographic profiles: Remember that topographic maps represent Mark For Ex: If the number of lines between 2 index lines are 5. Please hand in this lab to your TAs at the end of the lab period. A contour is a line drawn on a map that joins points of equal height above sea level. Question 20. 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 collector resistance? Salmon River This map is a geologic map of glacial geology in the area, drawn Are streams in this area downcutting or laterally eroding? What is the area of the slab? The horizontal map distance measures 0.5 inches. To show information. The steepest path on a topographic Surface is always perpendicmar to topographic contour at the point where the flowline crosses the contour. 46, black arrow). . A contour interval is the vertical distance or difference in elevation between contour lines. Figure 2 is the cross section along line AB. Flood stage, or bankfull stage, on Sweetwater Creek occurs at a discharge of ~4,500 cfs. Answers: 1 Show answers Another question on Biology. Contour lines that are far apart show what type of slope? (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. each contour to the horizontal line of the same elevation. In which stage of the cycle of stream erosion is this area? slope of the area you are interested in by subtracting the lowest elevation (1 pt) Mount Price is located next to Garibaldi Lake (just west of Table Bay, Figure 7-E9 above). 40 feet - 20 feet = 20 feet How far (in Km) did the pole move in one year during this time period? elevation of each index contour line. What features would you expect to occur at this type of boundary? Write your estimates for the elevation at each waypoint next to the waypoint. Go back to the location in Google Earth that you examined for question 36 (46 55 25.66 N 152 01 25.17 E). What type of process is going on at this location? A contour interval is a vertical distance or difference in elevation between contour lines. Constructing a topographic map by drawing in contours can be easily done if a person remembers the following rules regarding contour lines: As you draw a contour line on a map you will notice that the elevations on one side of your line will be lower elevations, and elevations on the other side of your line will be higher elevations. shows the surface features, or topography of Earth or a certain area. A mountaineer is planning an expedition. 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. 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. long-term time-average of sea level). Log in to TheConstructor to ask questions, answer peoples questions, write articles & connect with other people. Among other things, a topographic map can be used to measure the average slope Dont forget to add a contour line to the map legend! How is the top of a mountain shown on a topographic map? up or down from the nearest index contour line and multiplying by the contour If the numbers associated with the contour lines are decreasing, there is a decrease in elevation. Hint- make sure to re-read the section on plate boundaries before answering! Using a contour interval of 40 m, label the elevation of every contour line on the map below. contour lines, the steeper the slope. Inspect the P wave velocities. 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? Thus, ais 520'; bis 540'. A rounded contour indicates a flatter or wider drainage or spur. Mountain/Hill Depressions If the counter interval is 10 feet, which hill (a,b,c) when viewed from the base is 40 feet tall? If you were standing in the middle on the intermost contour line hill "c", your elevation would be. These circular patterns indicate hilltops, like in the diagram below (Figure 3.6). The headings indicate the direction the Pacific Plate is moving over the hot spot. Why would a smaller ratio scale be used for this map in comparison to the Garibaldi map? 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. A topographic map may or may not include shaded relief to help visualize steep slopes. Index contour lines: Every fifth contour line is a thicker, "index" line.At some point along that line, its exact elevation is listed. 300 A. Therefore, if you print it out in black and white please refer back to the electronic copy to avoid confusion. A high relief. Note: The intervals are increasing, therefore, the contours indicate a hill. It is impossible to determine which location is higher. Melodic contour is the shape and sequence of movements of a melodic line. Generally, there are totally distinct contour intervals for various maps. 3. They also show elevation. Note: the maps used in this lab are in colour and the colours have significance in terms of the symbols and patterns used on the maps it is best to print this lab in colour and from a pdf version. At 2900 Km the S wave velocity falls to 0. f. Is the elevation of waypoint C > or < waypoint B? The intervals +4tt and 4tt, then, respectively showed intervals ascending and descending from the tonal centre. - Table 8 . At 500 degrees Celsius, rocks will be buried to about _______ km depth. a) Label the elevation of every contour line on the map. This is a graded activity, please submit it to your TA at the end of the lab. What happens when the lithosphere at point X is heated to 1500 C? What is the relief (difference in elevation) between Little Tomah Lake and the top of Tomah Mountain (look for "Tomah Mtn")? Lost your password? It is thought to have formed by the runoff of either precipitation or groundwater. maps also have a vertical scale to allow the determination of a point in three According to the geothermal gradient, rocks at 500 degrees Celsius will be buried how deep? Join TheConstructor to ask questions, answer questions, write articles, and connect with other people. slope percent = rise/run 100 8,194,375 years to sink. The. In the early days of ribosome research, before the exact role of ribosomes was clear, a researcher made the following observation. 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. Step 3. The other side is covered with a layer of fiberglass 2.5cm2.5 \mathrm{~cm}2.5cm thick. It is determined as follows: Let's take an example of two contour lines which are labelled.