Task 1: Identify features from contour line patterns Examine the contour map below. a. Write the correct lecter next to the following features ridge, hill, highet point, perennial river, non-perennial tiver, sput, flat land, sterp gradient. b. Give the contour interval used on this map. c. What do we call the height feature with the number 1567 ? d. Give the height of the trig beacon. e. Drw the cortour lines of the landscape feature shown at. B. Label a slope that has a sreep gradient and a slope that has a gentie gradient. L. Describe the landscape in the north-wat quarte of the map. Include the height of the land and the landscape features youcan see in this area.

**a. Feature identification** Assuming that the map uses letter‐labels for key features, one might match them as follows (note that actual labels depend on the given map): - **Ridge:** A line of high ground with “V”–shaped contour breaks pointing away from the ridge; label it with the letter marking the narrow, elongated high elevation (e.g. “B”). - **Hill:** A rounded, closed contour pattern that rises above the surrounding land; label it with the letter identifying the enclosed, roughly circular arrangement (e.g. “D”). - **Highest point:** A closed contour with a spot elevation (the highest number on the map) indicating the summit; label it with the letter at that enclosed peak (e.g. “E”). - **Perennial river:** A continuous blue line (or symbol) that follows a valley and shows “V”–shaped patterns indicating flow; label it with the letter marking this feature (e.g. “A”). - **Non-perennial river:** A similar line (often dashed or lighter) representing a stream that does not flow year‐round; label it with its letter (e.g. “C”). - **Spur:** A projection of contours from a higher region into lower lands (an “arm” off a ridge); label with the letter at the protruding part (e.g. “F”). - **Flat land:** An area where contour lines are widely spaced, indicating little change in elevation; label it with the corresponding letter (e.g. “G”). - **Steep gradient:** An area where contour lines are closely spaced, indicating a rapid change in elevation; label it with the letter marking the area of very close contours (e.g. “H”). *(The letters above are examples. In your actual map, use the provided letter labels next to each corresponding feature.)* --- **b. Contour interval** The contour interval is the constant vertical distance between successive contour lines. In many topographic maps the interval is given in the map legend. For example, if the difference in elevation between adjacent contours is \[ 20\,\text{m}, \] then the contour interval is \(20\,\text{m}\). --- **c. Height feature with the number 1567** A number inscribed on the map at a specific point that does not lie on the continuous contour lines is called a **spot elevation**. In this case, the label “1567” indicates that the ground at that particular spot is at an elevation of \[ 1567\,\text{m}. \] --- **d. Height of the trig beacon** A trig beacon (or triangulation station) is typically marked by a small triangle symbol on top of a spot. Its elevation is usually given either next to the triangle or can be deduced from the surrounding contour lines. For example, if the map indicates that the trig beacon lies on or between the \(1520\,\text{m}\) and \(1540\,\text{m}\) contours and is labeled accordingly, then its height may be \[ 1530\,\text{m}. \] *(Use the number provided on your map for the trig beacon.)* --- **e. Drawing the contour lines and labeling slopes** 1. **Sketching the Landscape Feature:** Assuming the landscape feature at point B is a hill or valley, draw a set of roughly concentric, closed contour lines. Keep in mind that the spacing of these lines indicates slope steepness. 2. **Labeling a Steep Gradient Slope:** On one side of the hill (or valley), draw contour lines that are very close together. Label this part as a **steep gradient** because the rapid change in elevation means the slope is very steep. 3. **Labeling a Gentle Gradient Slope:** On the opposite side, show contour lines that are more widely spaced. Label this part as a **gentle gradient** because the elevation changes gradually. *(Your drawing should clearly distinguish these two types of slopes.)* --- **L. Description of the landscape in the northwest quadrant** Examine the northwest portion of the map. In your description, include: - **Elevation:** Determine the approximate elevation by identifying the contour lines present. For instance, if the land is bounded by contour lines labeled from \(1400\,\text{m}\) to \(1450\,\text{m}\), you might say that the land is around those elevations. - **Landscape Features:** Note the type of land here. For example, you might observe: - A gently undulating terrain with broader spacing between contour lines indicating relatively **flat** or gently sloping land. - The possible presence of a valley if you see a “U–shaped” pattern in the contours, or a ridge if there is an elongated high area. - A stream or river channel if you see a blue line cutting across the contours; if it is continuous, it is a **perennial river**, otherwise a **non-perennial river**. A sample description might be: “In the northwest quadrant, the map shows an area with contour lines ranging from approximately \(1400\,\text{m}\) to \(1450\,\text{m}\). The contours are widely spaced, suggesting gentle slopes and relatively flat land. A small meandering line, marked in blue, indicates a non-perennial stream cutting through the valley, while a subtle ridge appears along the eastern edge of the quadrant.” *(Adjust the descriptions and numbers to match the details shown on your actual map.)*