Contour lines do not cross each other, divide or split. Take that distance and divide it by the speed you calculated in question 3 to estimate when the next supercontinent will form. 31W. In Figure 1.9, which of the following geologic structures is. The Wadati-Benioff zone is associated with which type of plate boundary? All melodies have contours. long-term time-average of sea level). 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. during a flood the river breached the natural levee flowing into the floodplain. 40 feet - 20 feet = 20 feet a. The direction of plate movement in the last 1.1 million years. Closer distance indicates steep slope and wider distance gentle slope. (1 pt) What is the ratio scale of this map? Where do the P waves abruptly change? elevation of each index contour line. First, we compute the activation . 17. The even spacing indicates the hill has a uniform slope. When we hold a ruler to the y-axis of the topographic profile in Figure 3.6, we see that 0.5 inches = 50ft, which means 1 inch = 100ft on the vertical scale. (10 pts) Imagine you are a geologist working for the Geological Survey of Canada. 68 and south of the Edmonson County Line. Contour lines make a v pattern as they cross streams and rivers, and the v always points towards the upstream direction. Mark In which stage of the cycle of stream erosion is this area? Terms and conditions apply. What is the elevation of the base of the monument in meters? If the user enters 3.14 in response to the following programming statement, what will be stored in value? It is impossible to determine which location is higher. do not cross each other, divide or split. Was Carter Lake cut off before or after the state boundary between Nebraska and Iowa was drawn? Taking the area to be mapped, contour intervals are considered. For example, the first hill on the left has a top contour line of 50ft. 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. Refer to the figure below and assume contour interval of 10 feet. Example 4- What is the slope percent in Exercise 2 above? (Answer to the nearest foot.) They also show some features made by people such as brodges. What type of stream drainage pattern is present on this map? 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? how old is the sequence of rocks. in Figure 9.4, what is the elevation of the intersection of U.S. Route 1 and Maine Route 6 in Topsfield? 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. 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? A. Given that this portion of Pangaea broke apart 200,000,000 years ago, calculate how fast South America and Africa are 2.The contour interval is 0.025 N m 2.The thick black contour is zero. In a large map, index contour lines are less to keep it simple to read the map easily. 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). View the full answer. slope percent = rise/run 100 "Contour" actually means "outline" in French, which is where the name comes from. What type of tectonic plates are present? Contour intervals must be obeyed, therefore the contour line elevations can only be multiples of the contour interval . The contour interval is stated on every topographic map and is usually There are fossils such as Glossopteris and Lystrosaurus that are found in rocks in South America and Africa that indicate they were part of Pangaea approximately 200 million years ago. 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? To construct a profile, you need graph paper, a ruler, and a pencil. 8,194,375 years to sink. Refer to the figure below. Give the elevation of the highest and lowest contour lines as well as the difference between them. When the contour interval is not specified in the map, it can be calculated as explained in the following sections. below cuts the mountain at equal intervals of elevation. Which of the following statements about them is true? B. Construct flow lines emanating from each point " x " to illustrate the groundwater flow field on the map. They then cross the stream and turn back along the opposite bank of the stream forming a "v". The figure above illustrates various topographic features. (1 pt) What is the longitude along the eastern edge of this rectangle? 3. For the following exercises, please refer to British Columbia Topographic Map 092G095 of the Mount Garibaldi area in southern BC. What is the change in elevation across each contour interval (i.e., between successive "regular" contours) on this map? Figure 2 is the cross section along line AB. 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. 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? Both A and B (20-2900 Km and 2900-5100 Km). Based on the map below, which location has a greater elevation, A or B? which of the above geologic events is seventh in the sequence. Index contours are bold or thicker lines that appear at every fifth contour line. examine the unconformity shown in figure 1.10. what type of unconformity is this? within the sequence is a distinctive clay layer that under closer inspection is fine grained volcanic ash. Betwe View the full answer Transcribed image text: What is the contour interval for the figure below? 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. To use the same interval for both x and y , specify xyinterval as a two-element vector of the form [min max]. Math can be challenging, but with a little practice, it can be easy to clear up math tasks. For this computation, the rise, or vertical ground distance, and run, or horizontal ground distance, are needed. Observe the velocities of waves on the graph. Be sure to only plot those elevations that are at the intersection of the contour line with line A-B. How contour lines show a pair of small hills Lay a strip If the river on this map is 1.93 miles long, what is the gradient for this river? contour (X,Y,Z) specifies the x and y coordinates for the values . How far did the pole move? 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. 2. Explain how you made this decision. A standard topographic map uses contour linesto express elevations above sea level and show the shape of the land. A low relief. If the numbers associated with the contour lines are decreasing, there is a decrease in elevation. Want to create or adapt books like this? be found. The highest point on a topographic map is marked as 345m. Practice Questions on Geological Structures, 7. C. (1 pt) How much higher is Mount Price than Garibaldi Lake? Do Pole movements seem to be steady every 100 years or variable? If you were standing in the middle on the intermost contour line hill "c", your elevation would be. Contour lines are used to show elevation on a topographic map. in the southern portion of the map, the area is underlain by limestone. Please hand in this lab to your TAs at the end of the lab period. The numbered contour lines are the index contours; the unnumbered contour lines are the supplemental contours. Contour values are in feet. Assume that water flowed through these valleys at some time. In most maps, every fifth contour line is an index contour. 19. Which of the following places represent a Wadati-Benioff zone? For consistency, assume that elevations between contour lines are 1/2 a contour interval higher than elevation of the lower line. A topographic profile along the A - A' line is shown correctly in: What is the longitude for the northwest corner of the map? the entire earth to a city block (or less). 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). These same fossils can be found in Australia, which indicates it, along with Antarctica, was also part of Pangaea at that time. CONTOUR/SIGDIG= Sets the number of digits after the decimal point for contour labels; default is 2. Now calculate the difference between the two-selected index contour line selected from a map. it shows natural features such as rivers and lakes. Why does the boundary depart from the river channel? Sharp contour points indicate pointed ridges. TAs names: _______________ _______________. In which stage of the cycle of stream erosion is this area? 1 What is the contour interval on this map? Trees growing in denser stands experience more competition for essential resources, which can make them more vulnerable to disturbances. Keeping the abrupt topography change in mind, which of the following is true? hillslope: CONTOUR/SPACING= Sets spacing for contour labels; default spacing is 5". Write your estimates for the elevation at each waypoint next to the waypoint. Assume value is an integer variable. Where do the S wave velocities abruptly change? any point by finding the nearest labeled line, counting the number of lines 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. Location A is higher. Melodic contour is the shape and sequence of movements of a melodic line. What direction is the North American plate moving in comparison to the Pacific Plate at this location? available from: Open Geosciences. as sinkholes, underlying soluble rock was dissolved and area collapsed. 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? The headings indicate the direction the Pacific Plate is moving over the hot spot. 0.5 in 24,000 in/in = 12,000 in e. Place the paper Follow the creek along its path. 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. A contour interval in surveying is the vertical distance or the difference in the elevation between the two contour lines in a topographical 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. Step 3. Please refer to this Saskatoon topographic map to complete the next three questions. This is a critical skill to prepare students to learn about more complex geologic maps. Absolutley amazing app and would definitely recommend. Contour line art is a method of drawing where you draw only the outline of an object, without any shading. These features you are seeing are linear valleys. Refer to the topographic map in Figure 7-E3 for an example of contour lines you can use to help you complete this question. For producing a detailed study of The more closely spaced the The lines point toward the center of the depression. What does each contour line on a map show? The small contour interval, the survey work and plotting have to be more accurate. What color shows buildings, bridges and railroads? What happens when the lithosphere at point X is heated to 1500 C? The figure on the right shows the 500 mb height map for December 9 with the position of a trough and ridge . The result is expressed in feet per mile (ft./mi.). The elevation at sea level is zero meters. 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? a landform it is necessary to construct a topographic profile or cross-section At the point where 2 contour lines would cross would have 2 different elevations which is impossible. Topographic The smallest circles represent the A profile may be constructed In the context of evolution through natural selection, explain why multicellular organisms have specialized exchange systems and surfaces. (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? These marked or labeled lines are known or termed as Index Contour Lines. Why are colors and symbols used on topographic maps? 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. 40 feet. What type of bedrock is present in this area? As a contour approaches a stream, canyon, or drainage area, the contour lines turn upstream. Expert Answer. Sensor stability as characterized through mean absolute differences (MARD) on every study day including only sensors inserted on study day 1. Using a contour interval of 40 m, label the elevation of every contour line on the map below. slope percent = rise/run 100 You will receive a link and will create a new password via email. through a particular interval. 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.
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