30 seconds. The map has a contour interval of forty feet, which means that every place between the marked 6800 foot line and the next The difference in elevation between one contour line and the next. "Contour" actually means "outline" in French, which is where the name comes from. Intervals involvinq the tonal centre, and their directions of movement -1 1 0 0 0 -1 0 1 0 0 -9 0 0 0 -8 1 0 0 -7 0 0 0 -6 . Each contour line shows a different elevation. What does each contour line on a map show? Locate the Louisville and Nashville Railroad line just south of Hwy. 8. which isotopic system should they use. Also no adds. As a rule, hilltops will be slightly rounded to show a slight increase in elevation to represent the crest of the hill, but be careful not to draw the hilltoptoo high on your graph paper. Contour lines that are very close together indicate a steep slope. 31. Put simply, contour lines mark points of equal elevation on a map. These circular patterns indicate hilltops, like in the diagram below (Figure 3.6). 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). In Figure 1.9, which of the following geologic structures is. Mountain/Hill Depressions The contour music definition is the same definition in any medium such as visual art,. lowest line (which is 6760 feet, and not marked) has an elevation equal or greater Q. available from: Open Geosciences. f. Is the elevation of waypoint C > or < waypoint B? Look closely at the topography south of highway, and it changes abruptly. C. Contour lines are used to show elevation on a topographic map. A simple diagram is shown below on the left. quickly and accurately across any straight line on a map by following this procedure: a. far apart represent gentle slopes. What type of stream drainage pattern is present on this map? 7. Lakes/Ponds. 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. For Ex: If the number of lines between 2 index lines are 5. USask GEOL 121 Rock & Mineral Quiz Information, 8. What bearing would you need to walk to go to the Smithsonian from the monument? 14. They are usually mapped with large contour intervals. of a hill (or hills). Hint: draw a simple map or a rough cross-section sketch to help illustrate your logic. Overview section 7.3 provides background information on contour lines to prepare you for these exercises. The headings indicate the direction the Pacific Plate is moving over the hot spot. Index contour lines: Every fifth contour line is a thicker, "index" line.At some point along that line, its exact elevation is listed. For the plotting of region, the contour intervals are presumed. A higher contour interval is used for a large area and small contour interval for small area. Calculate how fast the Hawaiian Islands are sinking, by using the ages and elevations of Maui and Nihoa. The rock that most closely resembles the composition of oceanic crust based on the description in the previous section is: Based on the choice you made for question 17, what is the density of the rocks that make up oceanic crust? The smallest circles represent the fairmount. It is determined as follows: Let's take an example of two contour lines which are labelled. Examine the path of the river that feeds into and flows out of Quail Lake. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. (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. Where does it wind up? Calculate the contour interval between index contours, which are are the more prominent, bold-colored lines with the elevation marked on them. Do Pole movements seem to be steady every 100 years or variable? What is the approximate map relief? In this case, to find out the intermediate points elevation, contour intervals are used. Locations A and B are at the same elevation. Joyce McBeth; Karla Panchuk; Tim Prokopiuk; Lyndsay Hauber; and Sean Lacey, 1.3 GEOLOGY & RESOURCE MAPS FOR CANADIAN PROVINCES & TERRITORIES, 1-E1 LAB EXERCISES CANADIAN GEOLOGY & MINERAL AND ENERGY RESOURCES, 1-E2 LAB EXERCISES REGIONAL GEOLOGY & MINERAL AND ENERGY RESOURCES, 2-E1 LAB EXERCISES MINERAL IDENTIFICATION, 3.5 IGNEOUS ROCK FORMATIONINTRUSIVE VS. EXTRUSIVE, 3.6 LAB EXERCISES IGNEOUS ROCK IDENTIFICATION, 4-E1 LAB EXERCISES SEDIMENTARY ROCK IDENTIFICATION, 5.4 LAB EXERCISES METAMORPHIC ROCK IDENTIFICATION, 6.7 LAB EXERCISE CHOOSING ABSOLUTE DATING METHODS, Answers to Practice Lab Exercises in section 7-E1, 8.6 GEOLOGIC STRUCTURES CREATED BY PLASTIC & BRITTLE DEFORMATION, 8-E5 EXERCISES COMPLEX GEOLOGICAL MAPS & CROSS-SECTIONS, 9-E1 LAB EXERCISE LOCATING AN EPICENTER, 9-E3 LAB EXERCISE HISTORICAL EARTHQUAKE, 10.3 STREAM GRADIENT AND THE CYCLE OF STREAM EROSION, Introductory Physical Geology Laboratory Manual First Canadian Edition (v.3 Jan 2020), https://pub.data.gov.bc.ca/datasets/177864/pdf/092G/092G095.pdf, Next: Extra Practice Question on Topographic Maps, Introductory Physical Geology Laboratory Manual First Canadian Edition (v.3 - Jan 2020), Creative Commons Attribution-ShareAlike 4.0 International License. Controls the size of characters in the contour labels; default is 0.08". The figure above illustrates a depression and its representation using contour lines. Show your work. Complete this map by adding in contour lines using a contour interval of 100 m. Draw the contour lines so that they are continuous: they will either continue to the edge of the map or form an enclosed circle. 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. (b) Notice how a mountain saddle, a ridge, a stream, a steep area, and a flat area are shown with contour lines. What is the physical state of a dry mantle rock at point X? The word contour comes from French, and it is defined as meaning the "outline" of a subject, it often defines a form or an. Why does the boundary depart from the river channel? Log in to TheConstructor to ask questions, answer peoples questions, write articles & connect with other people. In the given figure contour interval is 50 feet. What is the contour interval on a map based on? Observe the velocities of waves on the graph. 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. The contour interval is 20'. Suppose that (x,y,z)=i+k\nabla \varphi(x, y, z)=\mathbf{i}+\mathbf{k}(x,y,z)=i+k. example. A person standing at point "F" would only be visible to a person standing at: Examine the figure below. Index contours are bold or thicker lines that appear at every fifth contour line. Lay a strip 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. Lighter contour lines do not have elevations, but can be determined by counting Contour lines that are close together show what type of slope? The run is 1000 feet and the rise in elevation is 120 feet. Hint- make sure to re-read the section on plate boundaries before answering! For example, the first hill on the left has a top contour line of 50ft. o drainage ' divide or watershed boundary 1000 ft -::-:: Contour interval 50 Feet Figure 12.5 Flow lines across a topographic surface. Trees growing in denser stands experience more competition for essential resources, which can make them more vulnerable to disturbances. If the counter interval is 10 feet, which hill (a,b,c) when viewed from the base is 40 feet tall? The commonly used contour interval is 20 feet for a 1:24,000 map scale. Assume value is an integer variable. The difference between adjacent contour lines. If the topographic map in Figure 3.6 has a fractional scale of 1:12,000 then 1 inch is equal to 12,000 inches or 1000ft; this 1inch = 1000ft equivalency is for the horizontal scale. When you join you get additional benefits. Contours make it possible to show the height and shape of mountains, the depths of the ocean bottom, and the steepness of slopes. For 1:25 000 scale maps the interval between contours is usually 5 metres, although in mountainous regions it may be 10 metres. of paper along a line across the area where the profile is to be constructed. Step 3. 3. 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? How big is the base (area) of the washington monument in sq feet? 2.The contour interval is 0.025 N m 2.The thick black contour is zero. British Columbia Topographic Map 092G095. 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). What important discovery did the researcher miss? Taking the area to be mapped, contour intervals are considered. Forests across much of the United States are becoming denser. a landform it is necessary to construct a topographic profile or cross-section Index contours are bold or thicker lines that appear at every fifth contour line. What happens when the lithosphere at point X is heated to 1500 C? A mountaineer is planning an expedition. Contour Interval on Topographic Map. A high relief. a) Label the elevation of every contour line on the map. Scale: Maps come in a variety of scales, covering areas ranging from vertical scales on your topographic profile are not the same. 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 . Write your estimates for the elevation at each waypoint next to the waypoint. Figure 7 . Contour line art is a method of drawing where you draw only the outline of an object, without any shading. which of the above geologic events is the seventh in the sequence? The overview section 7.4.2 provides useful background to help you answer questions 4 & 5. What is the latitude on the northern edge of this rectangle? What is the dc saturation current? Note: there is technically more than one correct answer for some of these questions. (2 pts) What is the gradient between Garibaldi Lake and Mount Price? Closely spaced long-term time-average of sea level). To use the same interval for both x and y , specify xyinterval as a two-element vector of the form [min max]. First, subtract the lower number from the higher number and then divide the result by the number of contour lines. Measure in centimeters the distance (Map Length) between the two points you recorded in the previous question. The contour lines in this figure are equally spaced. Widely separated contour lines indicate a gentle slope. Go back to the location in Google Earth that you examined for question 36 (46 55 25.66 N 152 01 25.17 E). If so, what are the corresponding highest and lowest elevations? Stream Assume that water flowed through these valleys at some time. Control of the body is accomplished by which of the following body systems? (Answer to the nearest foot.) 12. Contour lines Want to create or adapt books like this? The river in this area has a rather particular pattern, what geologic process caused this? a stream or river and dividing the distance (in miles) into the vertical difference 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. Expert Answer. Map Example (1 pt) Contour intervals located on this map are few and far between. Refer to Problem 14.1 for guidance. Contour lines that are far apart show what type of slope? Q: Refer to figure 23.5. index contour lines are generally darker and are marked with their elevations. 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. What is the area of the slab? Step 2. According to the geothermal gradient, rocks buried 75 km beneath the surface would normally be at what temperature? If you trace the length of a line with your finger, each point you touch is the same height above sea level. 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. Contour Lines Write your answer in feet. 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. As you look at the map, notice that the contour Practice questions on Topographic Maps, 5. These marked or labeled lines are known or termed as Index Contour Lines. it shows natural features such as rivers and lakes. The vertical distance or difference in elevation between contour lines is known as a contour interval. Calculate the stream gradient of Grape Creek in ft/mile. Question 14. Remember, because of isostasy the denser plate will be lower than the less dense plate. maps also have a vertical scale to allow the determination of a point in three located below the scale. (1 pt) How much higher is Mount Price than Garibaldi Lake? Which gas station is the most likely source of the gasoline leak? What type of drainage does this appear to be? The intervals +4tt and 4tt, then, respectively showed intervals ascending and descending from the tonal centre. The distance between these areas is ~1.6 miles (measured along the curving distance of the non-magnified stream). Example 4- What is the slope percent in Exercise 2 above? 15. The final answer we get after dividing is the contour interval of the specific topographical map. Note: This lab is in colour. It is usually every fifth line that indicates a change in elevation. slope percent = rise/run 100 Observe the S wave velocities. topographic profiles: Remember that topographic maps represent 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. If you were standing in the middle on the intermost contour line hill "c", your elevation would be. The contour interval is stated on every topographic map and is usually If the arrow is pointing toward the contour lines around your location, your location is a higher elevation than the index contour line. A contour interval is a vertical distance or a difference in elevation between contour lines in a topographic map, index contour lines are bold or thick lines that appear on every fifth contour line and if the number associated with specific contour lines is increasing, the elevation of the area is also increasing. 19. Q. Step-by-step explanation. 9. lines enclose smaller and smaller areas. 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. Because the stream flows south, contour a, which lies downstream of contour b, must be the lower of the two. This is a graded activity, please submit it to your TA at the end of the lab. contour lines represent steep slopes, conversely, contour lines that are spaced It is a plane section of the three-dimensional graph of the function f parallel to the-plane. A contour map consists of contour lines of a given geographical region. slope percent = (120ft / 1000ft) 100 = 12% the entire earth to a city block (or less). Generally, there are various contour intervals for the various maps. 2. To take the difference, subtract the higher elevated line with the lower elevated line reading. Please enter your email address. 16. 6. B. Construct flow lines emanating from each point " x " to illustrate the groundwater flow field on the map. Creating 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. Contour Lines: Contour lines are used to determine elevations and are lines on a map that are produced from connecting points of equal elevation (elevation refers to height in feet, or meters, above sea level). Please give your answer in grams/milliliter. What factors control the course of this river? A. Contour the water table data, using a contour interval of 10ft. examine the unconformity shown in figure 1.10. what type of unconformity is this? 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). 8,194,375 years to sink. Course Hero uses AI to attempt to automatically extract content from documents to surface to you and others so you can study better, e.g., in search results, to enrich docs, and more. Zoom out and examine the surrounding area, what geological hazards are likely in the area? At 500 degrees Celsius, rocks will be buried to about _______ km depth. BIOMEDICINE: Digestive System | Description o. 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. b. Location B is higher. 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? 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 . Which of the three proposed plate tectonic mechanisms would NOT occur at this location? (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. Point D is marked at 10,000 elevation and the next label is marked as 10,500 elevation. Contour lines The purpose of this lab is to familiarize students with how to read and use topographic maps. S waves cant travel through liquids and this depth is where the liquid outer core exists. Sorry, you do not have permission to ask a question, You must log in to ask a question. please add a brief explanation thank you Write your answer in feet. Location A is higher. -- - . Learn more about how Pressbooks supports open publishing practices. In which direction does it flow? The difference in elevation between the highest and lowest points in the area on the map. Topographic What would cause two separate samples of pure water to have slightly different pH\mathrm{pH}pH values? The figure above illustrates various topographic features. Expert Answer. 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. In the context of evolution through natural selection, explain why multicellular organisms have specialized exchange systems and surfaces. which of the above geologic events is the second in the sequence, which of the above geologic events is the fifth in the sequence. 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). (1 pt) What is the longitude along the eastern edge of this rectangle? The peak is normally considered to be located at half the interval distance. Step 1. Each dot represents an elevation number, spaced evenly at 100 m in the horizontal. how old is the sequence of rocks. What is the change in elevation across each contour interval (i.e., between successive "regular" contours) on this map? 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 . characteristics of contour lines: 1. Why is this so? A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical map. When you join you get additional benefits. 31? What type of tectonic plates are present? The contour line is a line which defines the outline of an object. We further visualize the globally normalized responses of each convolution filter on the image of grating interval 6 in Figure 5 B. The direction system is useful but imprecise. Contour They also show some features made by people such as brodges. What is the dc collector resistance? a geologist is trying to date a sequence of sedimentary rocks with abundant fossils and sandstones. Using a contour interval of 40 m, label the elevation of every contour line on the map below.
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