Contour Maps and Landforms | Class 7 | Geography | Chapter 11| Maharashtra State Board
Explore the art of topography with our channel dedicated to contour maps and landforms. Dive into the intricacies of contour lines, unravel the secrets of the Earth’s surface, and harness the power of these tools for practical applications in GIS, urban planning, and environmental management. Join us to elevate your understanding of the world’s terrain!
Questions & Answers
1. Answer the following questions:
1. How can the distribution of the height and landform in a region be shown?
Ans. The distribution of height and landforms in a region can be shown using contour maps. These maps are created using mathematical survey methods and depict various aspects of landforms such as altitude, relief, slope, direction of slope, and drainage. Contour lines on these maps join places of equal altitude, helping to understand the characteristics of the landforms.
2. To whom are contour maps useful?
Ans. Contour maps are particularly useful for:
Mountaineers and trekkers to navigate and plan routes.
Soldiers and defence officers for strategic planning and understanding terrain.
Engineers and architects to identify suitable sites for construction projects.
Geographers and environmental planners to study landforms and natural resources.
3. What do you understand by observing contour lines?
Ans. By observing contour lines, you can understand several aspects of the terrain:
Elevation: Contour lines connect points of equal altitude above sea level.
Relief: The variation in elevation and the arrangement of landforms.
Slope: The closeness of the lines indicates the steepness of the slope; closer lines mean a steeper slope.
Direction of Slope: The ‘V’ or ‘U’ shapes point towards higher ground, indicating the direction of the slope.
Drainage Patterns: The arrangement of the lines can suggest the flow of water and the location of streams and rivers.
4. How will a contour map be useful to a farmer?
Ans. A contour map can be beneficial to a farmer as it helps in contour farming, a practice of tilling sloped land along lines of consistent elevation. This method conserves rainwater, reduces soil losses from surface erosion, and maximizes nutrient uptake for abundant crop production. It also reduces fuel consumption and is easier on farming equipment. Thus, contour maps can guide farmers in implementing efficient and sustainable farming practices.
2. Fill the blanks with appropriate words:
1. If the contour lines are closer to each other, the slope is steep.
2. The contour lines on the map represent places of same altitude.
3. The slope can be understood from the distance between the contour lines.
4. If the distance between two contour lines is more then the slope is gentle.
E X T R A
1. Answer the following questions:
1. How are contour maps helpful to us?
Ans. Contour maps are helpful to us because they provide a visual representation of the terrain's elevation and shape, aiding in various activities such as urban planning, engineering projects, environmental management, hiking, and navigation. They help us understand the landscape's features, including hills, valleys, and slopes, enabling better decision-making in resource management, infrastructure development, and land use planning.
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