Question

What connects points of equal elevation on a map? A. legend C. scale B. series D. contour line

Short answer

Contour line (Option D).

Step-by-step solution

Identify the Definition

Points of equal elevation are connected by lines on a map to indicate areas of constant height above a given level, usually sea level. These are essential in understanding the topography of the land.

Understand the Potential Answers

Review the given options: A. Legend is a key to symbols on a map, B. Series generally means a sequence of items, C. Scale provides a ratio of map distance to real distance, and D. Contour line represents a line connecting points of equal elevation.

Choose the Correct Option

Contour lines on a map are specifically used to connect points of equal elevation, making it possible to visualize the three-dimensional shape of the land on a two-dimensional map.

Key concepts

Contour Lines

Contour lines are an essential element of topographic maps, connecting points of equal elevation. Imagine tracing a path along a specific altitude on a three-dimensional surface, like following the edge of a mountain at a consistent height. These lines create a flat representation of varying elevations on a two-dimensional map, letting you visualize the lay of the land. - Contour lines never cross or intersect because one point cannot have two different elevations. - The spacing between contour lines indicates the slope steepness. Closely spaced lines mean a steep slope, while wider spaces indicate a gentle slope. This method allows for understanding complex landscapes easily, making analysis and navigation simpler. Whether planning a hiking route or construction project, contour lines provide crucial information.

Map Reading

Map reading is a skill that enables the interpretation of various map elements to understand and navigate the environment. A map is a simplified representation of an area and reading one involves identifying key symbols and markings: - **Legend**: This tells you what each symbol on the map stands for, helping you decipher the information provided. - **Scale**: This shows the ratio of a distance on the map to the actual distance on the ground. For example, a 1:50,000 scale means 1 cm on the map equals 50,000 cm (or 500 meters) in reality. - **Contour Lines**: Using these, you can gauge elevation changes and the shape of the terrain, crucial for tasks like planning a hiking trip or understanding land use. By identifying these elements, you can effectively read and interpret the map, allowing for better planning and navigation experiences.

Elevation

Understanding elevation is crucial in many fields, such as geography, engineering, and recreational activities. Elevation refers to the height of a point in relation to a reference level, commonly sea level. - **Absolute Elevation**: This is a fixed measurement, like how high a mountain is above sea level, giving a clear idea of its true altitude. - **Relative Elevation**: This refers to the height difference between two points, useful for understanding terrain contours and determining slope grades. On topographic maps, contour lines effectively convey elevation data, allowing you to assess height variations and slopes. This information is invaluable when planning construction sites, assessing potential flood zones, or simply appreciating the scope of a landscape. Understanding elevation helps in making informed decisions and gaining insight into the physical world.