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? Zoom out and examine the surrounding area, what geological hazards are likely in the area? 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. 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. . Use the slope percent equation and solve. Country What is the approximate map relief? Contour values are in feet. 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). on a topographic map base. points. The peak is normally considered to be located at half the interval distance. contour (X,Y,Z) specifies the x and y coordinates for the values . Now difference between 7100 and 7000 is 7100 7000 = 100. Assume value is an integer variable. for Interpreting Topographic Maps
Math can be challenging, but with a little practice, it can be easy to clear up math tasks. The terms below
Note where this would plot on your graph. In what general direction is the Pacific Plate moving? Is Lake Creek flowing into or out of Phelps Lake? Calculate the stream gradient of Grape Creek in ft/mile. Location A is higher. (b) Notice how a mountain saddle, a ridge, a stream, a steep area, and a flat area are shown with contour lines. Please use Occams razor as you answer the questions: use the simplest explanation rather than the most complicated explanation to answer the question. The shaded areas indicate the 95% confidence intervals. Usually there are different contour intervals for the different maps. (Answer to the nearest foot.) At the point where 2 contour lines would cross would have 2 different elevations which is impossible. Q: Refer to figure 23.5. Low gradient and abundant sediment supply. Using a contour interval of 40 m, label the elevation of every contour line on the map below. Then, find the difference in elevation between the two points. Controls the size of characters in the contour labels; default is 0.08". This plate boundary isn't as simple as the previous examples, meaning another nearby plate boundary directly influences it. 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? think about the drainage pattern you selected in the previous answer - what does this tell you about the underlying rocks? A darker, heavier contour line that is labeled with an elevation. In Figure 1.9, which of the following geologic structures is. 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. 1 ft = 24,000 ft, and 24,000 ft x (\(\frac{1\;km}{3280\;ft}\)) = 7.32 km. In most maps, every fifth contour line is an index contour. the result from the nearest marked contour line. What is the gradient? (in feet) between the two points. If the arrow is pointing toward the contour lines around your location, your location is a higher elevation than the index contour line. Measure the distance using the bar scale between the pole 1400 and 1700 (locations C and F). Examine the path of the river that feeds into and flows out of Quail Lake. (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. with the elevation of the contour it represents. Which one travels faster? All Rights Reserved. Write your answer in feet. (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. On a topographic map, a contour line is a line that depicts ground elevation or depression. The zone from 5100-6400 represents the Earth's ? The selection of the contour interval is decided by the survey leader before the start of the mapping process depending upon the ground factors. 200 feet. vertical scales on your topographic profile are not the same. To show different features of Earth's surface. Contour intervals must be obeyed, therefore the contour line elevations can only be multiples of the contour interval . Observe the stream on the Omaha N, Nebraska-Iowa quadrangle. Betwe View the full answer Transcribed image text: What is the contour interval for the figure below? Mathematically, a contour line is a curve in two dimensions on which the value of a function f (x, y) is a constant. slope percent = rise/run 100 Index contours are bold or thicker lines that appear at every fifth contour line. 3. A topographic map may or may not include shaded relief to help visualize steep slopes. A. Contour the water table data, using a contour interval of 10ft. Given that this portion of the Australian plate moves at a speed of 2.2 inches per year, how old are the snake fossils? Use the topographic map (Fig. To solve a math problem, you need to figure out what information you have. Sorry, you do not have permission to ask a question, You must log in to ask a question. A low relief. What shape are the contour lines that cross a valley or stream? Location B is higher. Sensor stability as characterized through mean absolute differences (MARD) on every study day including only sensors inserted on study day 1. 8. slope percent = (120ft / 1000ft) 100 = 12% Example 4- What is the slope percent in Exercise 2 above? 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. 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. Observe your best fit line. See the example under CONTOUR/SPACING below. Contour plots with Excel and Matplotlib Select the XYZ data arranged as a single range (Range I4:N8 in the data screenshot below). A contour line is a line drawn on a topographic map to indicate ground elevation or depression. What type of tectonic plates are present? How are the tops of hills, mountains or depressions (dips) shown on a topographic map? contour lines, the steeper the slope. To take the difference, subtract the higher elevated line with the lower elevated line reading. Its Calculation, Uses and When it is Required, Factors Affecting the Selection of Contour Interval. 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). What important discovery did the researcher miss? 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). When the contour interval is not specified in the map, it can be calculated as explained in the following sections. TAs names: _______________ _______________. The Zone from 0-20 km represents the earths? Therefore the topographic profile in Figure 3.6 represents a profile of the map surface (along the A-B line) that has been vertically exaggerated by 10 times (10X). Compare the contour intervals from the Royal Gorge, Colorado map (map 5.1) to the Omaha N, Nebraska-Iowa map. Note: if you are unable to read the contours on the map, view the original map on the web or look at the large printed copy in the lab. The contour line is a line which defines the outline of an object. A higher contour interval is used for a large area and small contour interval for small area. Why do you think then that only a 1-2 drops of indicator is used in an acid-base titration? Explain why. (1 pt) What is the ratio scale of this map? which of the above geologic events is the seventh in the sequence? d. Prepare a vertical
Does your topographic profile show any peaks or valleys? Therefore: Rise = change in elevation = top (Point A elevation) minus bottom (Point B . Write your answer in feet. Both A and B (20-2900 Km and 2900-5100 Km). 2. For example, if you wanted to do a contour line drawing of a pear, you'd simply draw the outline of the pear, add a stem, and stop there. Locations A and B are at the same elevation. Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes. 750m. Why would a smaller ratio scale be used for this map in comparison to the Garibaldi map? the "V" points to the area of higher elevation or upstream. 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? e. Is the elevation of waypoint A > or < waypoint B? 3. (2 pts) What is the gradient between Garibaldi Lake and Mount Price? This content is subject to copyright. Every sixth contour line has an index contour, which is a bolder or thicker line. slope of the area you are interested in by subtracting the lowest elevation
Based on the assemblage of organisms (A-I) in this sample, what is the age of this rock? 14. 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. separating in cm/year? In what direction was the main river flowing? 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 far did the pole move in meters in one year during this time period? Now calculate the difference between the two-selected index contour line selected from a map. Now look farther south of Sloans Crossing at Hwy. (1 pt) If someone decided to climb Mount Price, what would be the easiest and safest route to take? Q. How far apart are North America and Mainland Asia in cm? How big is the base (area) of the washington monument in sq feet? Line 1 starts with the contour interval, not the projection point. How far (in Km) did the pole move in one year during this time period? 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. 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? 6. The small contour interval, the survey work and plotting have to be more accurate. CONTOUR/SPACING= Sets spacing for contour labels; default spacing is 5".
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