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? Usually there are different contour intervals for the different maps. CHAPTER 3 - ELEMENTS OF TOPOGRAPHY - Food And Agriculture Organization 46, black arrow). Example 1- In the graphic below, what is the vertical distance between the contour lines? 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? 11. 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. Why is mass so important to a stars life? Show that the streamlines of \nabla \varphi are orthogonal to the level surfaces of \varphi. Transcribed image text: Contour lines rules: 1. slope of the area you are interested in by subtracting the lowest elevation in Figure 9.4, what is the elevation of the intersection of U.S. Route 1 and Maine Route 6 in Topsfield? LAB EXERCISE 9.4 Rules for Reading Contour Li, LAB EXERCISE 9.3 Understanding Stream Behavio, LAB EXERCISE 11.2 The Logic of Locating Earth, EXERCISE 9.4: Determining Elevations From Top, LAB EXERCISE 2.10 - Estimating the Amount and, LAB EXERCISE 2.13 - Why Are There More Earthq, LAB EXERCISE 6.9 - Gaining Insight into Depos, EXERCISE 2.1 - Recognizing Plates and Plate B, Chapter 2: Understanding and treating mental, Fundamentals of Engineering Economic Analysis, David Besanko, Mark Shanley, Scott Schaefer. 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. Generally, there are totally distinct contour intervals for various maps. LAB EXERCISE 9.2 Determining Elevations from Topographic Maps - Quizlet Clear up mathematic tasks. Lab 7 Activity - Laboratory Manual for Earth Science - BCcampus 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). The number of lines obtained in the above step is taken and added with 1. (b) Notice how a mountain saddle, a ridge, a stream, a steep area, and a flat area are shown with contour lines. The elevation at sea level is zero meters. Based on the assemblage of organisms (A-I) in this sample, what is the age of this rock? (Answer to the nearest foot.) Write your answer in feet. 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 from a distance), you can draw what is known as a topographic profile. Salmon River This map is a geologic map of glacial geology in the area, drawn Index contour lines: Every fifth contour line is a thicker, "index" line.At some point along that line, its exact elevation is listed. vertical scales on your topographic profile are not the same. A simple diagram is shown below on the left. Q: Refer to figure 23.5. We also acknowledge previous National Science Foundation support under grant numbers 1246120, 1525057, and 1413739. Every sixth contour line has an index contour, which is a bolder or thicker line. Examine the map below to answer the question. What are the different types of handrails used in bridges? It is usually shown in or near the map's legend. The column and row indices of Z are the x and y coordinates in the plane, respectively. In every map, on the right-hand bottom side, the contour interval is described. which Geologic Law did you use to come to the conclusion you made in the previous question? 18. Make sure to zoom out to get a good view of the relevant features. Why? Topographic (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. Given that this portion of the Australian plate moves at a speed of 2.2 inches per year, how old are the snake fossils? Contour lines 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. What type of drainage pattern is present in this area? 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. Would this be an easy location to maintain a railroad? What happens when the lithosphere at point X is heated to 1500 C? Transcribed image text: Refer to the hydrologic map in Figure 14.5. 31W. 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. This makes reading the map easier. 750m. Closely spaced In the given figure contour interval is 50 feet. Approximately how far did the pole move per day? Contour lines that are far apart show what type of slope? As an example, The contour interval is determined by the scale of the map and the degree of relief of the terrain being represented. The overview section 7.4.2 provides useful background to help you answer questions 4 & 5. quickly and accurately across any straight line on a map by following this procedure: a. Measure the gradient to the index contour past the word Creek (the last contour before it reaches Arkansas River). characteristics of contour lines: 1. Now difference between 7100 and 7000 is 7100 7000 = 100. (1 pt) Find Deadmans Lake (it is located close to Cheakamus River and south of Daisy Lake; refer to Figure 7-E8 which is a close up from the map area). 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. ATMO336 - Spring 2021 - University Of Arizona 0.5 in 24,000 in/in = 12,000 in A contour line is a line drawn on a topographic map to indicate ground elevation or depression. Figure 4: Reading Contour Maps . How far have the snake fossils moved apart since they were originally deposited? What shape are the contour lines that cross a valley or stream? In above Figure, what is the contour interval of the map? A contour line is a line drawn on a topographic map to indicate ground elevation or depression. How is the top of a mountain shown on a topographic map? on a map that are produced from connecting points of equal elevation (elevation Adjacent means next to. Using the map below ( Figure 6 ), what is the contour Refer to the figure below and assume contour interval of 10 feet. Set up the cancellation table so all units will cancel, except the desired unit, feet. What does each contour line on a map show? Contour chart in excel | Math Index Hint- make sure to re-read the section on plate boundaries before answering! How to Read a Topographic Map | REI Co-op What is the gradient of the GC, What is the contour interval for the map below, Between the index counters on this map, the river gradient is. What type of drainage does this appear to be? o drainage ' divide or watershed boundary 1000 ft -::-:: Contour interval 50 Feet Figure 12.5 Flow lines across a topographic surface. 2009-2021 The Constructor. below cuts the mountain at equal intervals of elevation. What is the physical state of a dry mantle rock at point X? Comparable to figure 8 D-F in ref. 2. look at a map of the Sulphur-Boundary Creek area along the Middle Fork of the Is the church likely to be at risk of contamination from this same leak? What is the dc saturation current? 12. Each contour line shows a different elevation. What is Melodic Contour in Music? - Study.com 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? Index contours increase by 250. They also show some features made by people such as brodges. The selection of the contour interval is decided by the survey leader before the start of the mapping process depending upon the ground factors. It is impossible to determine which location is higher. Practice questions on Topographic Maps, 5. What is the approximate map relief? 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? on a topographic map base. Keeping the abrupt topography change in mind, which of the following is true? Figure 3. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. Example 2- Draw a profile showing the elevations of the contours. A thumbnail version of the map is shown in Figure 7-E10, 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. How big is the base (area) of the washington monument in sq feet? For small contour interval, the money required will also more as the field and office work will be more. B. The given point, 537', therefore, must lie between the 520' and 540' contours (contours aand b). The purpose of this lab is to familiarize students with how to read and use topographic maps. Figure 7 . 1. PDF 2-1. BATHYMETRIC CHARTS - UMass D All contour lines are spaced at a 20 m contour interval. How far (in Km) did the pole move in one year during this time period? The Zone from 0-20 km represents the earths? Contour Line Drawing in Art | History & Examples - Study.com Upon adding divalent ions, she could regain 70S70 S70S particles, but never 1005 or 1305 particles. Mark Figure 7-E9 with a line to indicate the distance you used in your calculation. In every map, on the right-hand bottom side, the contour interval is specified. (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. What does this type of drainage pattern indicate about the area? What would happen to the mantle rock at point X if water is added to it? Absolutley amazing app and would definitely recommend. Q. Contour Lines Chapter 3 Topographic Maps by Karen Tefend and Bradley Deline, CC BY-SA 4.0. above or below it, multiplying by the contour interval, and adding or subtracting Topographic Use the appropriate conversion factor to convert the horizontal map distance to horizontal ground distance. 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 run is 1000 feet and the rise in elevation is 120 feet. 3. the archeologist determines that there is 16.7% of the parent isotope remaining in the cloth sample. First, we compute the activation . Index contours are bold or thicker lines that appear at every fifth contour line. It is usually every fifth line that indicates a change in elevation. You can figure out the elevation of On which date did a flood event have a recurrence interval of 0.5? In which stage of the cycle of stream erosion is this area? Likewise the "40" contour connects depths of 40 ft below sea level and so on. If the numbers associated with specific contour lines are increasing, the elevation of the terrain is also increasing. 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 Wadati-Benioff zone is associated with which type of plate boundary? If the relief is high (bigger change) you will need a bigger contour interval. Then, find the difference in elevation between the two points. Please hand in this lab to your TAs at the end of the lab period. Notice the general shape of this feature. According to the geothermal gradient, rocks buried 75 km beneath the surface would normally be at what temperature? If you were standing in the middle on the intermost contour line hill "c", your elevation would be. See the example under CONTOUR/SPACING below. maps also have a vertical scale to allow the determination of a point in three The peak is normally considered to be located at half the interval distance. The outside of the fiberglass is maintained at 35C35^{\circ} \mathrm{C}35C, and the total heat flow through the copper-fiberglass combination is 52kW52 \mathrm{~kW}52kW. On a topographic map, a contour line is a line that depicts ground elevation or depression. 300 A. 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. A map has index contours at 250m, 500m, and. 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. Refer to the figure below. To show information. Flood stage, or bankfull stage, on Sweetwater Creek occurs at a discharge of ~4,500 cfs. a geologist is trying to date a sequence of sedimentary rocks with abundant fossils and sandstones. shows the surface features, or topography of Earth or a certain area. In the early days of ribosome research, before the exact role of ribosomes was clear, a researcher made the following observation. Zoom out and examine the surrounding area, what geological hazards are likely in the area? Using the speed you calculated in the previous question (and ignoring possible changes in sea level), when will the Big Island of Hawaii sink below the surface of the ocean? Is the school likely to be at risk of contamination from this same leak? 31. First, subtract the lower number from the higher number and then divide the result by the number of contour lines. View the full answer. 9.4) to estimate the elevation of this point as accurately as possible. In which zone do the P wave velocities appear to be steadily increasing? Write your answer in feet. Also no adds. Hint: draw a simple map or a rough cross-section sketch to help illustrate your logic. Show your work. The following are general the "V" points to the area of higher elevation or upstream. Q. A contour interval is the vertical distance or difference in elevation between contour lines. 14. Assume value is an integer variable. 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). What is the area of the slab? 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. - Table 8 . At 500 degrees Celsius, rocks will be buried to about _______ km depth. contour lines represent steep slopes, conversely, contour lines that are spaced Sorry, you do not have permission to ask a question, You must log in to ask a question. It is thought to have formed by the runoff of either precipitation or groundwater. These circular patterns indicate hilltops, like in the diagram below (Figure 3.6). 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