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What is the term for a type of physical map that shows changes in elevation or height above sea level?

1. Relief map

2. Prime Meridian

3. Route Map

4. Rivers

The correct answer is: Relief map

The term for a type of physical map that shows changes in elevation or height above sea level is a relief map. Relief maps use contours, shading, and color variations to represent the topography of an area, illustrating how high or low different parts of the landscape are in relation to sea level. This kind of map is particularly useful for understanding the terrain of a region, including mountains, valleys, and plains, making it essential for geographical studies, hiking, and planning travels through diverse landscapes. The other options do not represent maps that specifically depict elevation. The Prime Meridian is a reference line for longitude, while a route map focuses on pathways or connections rather than topographical changes. Rivers, in this context, refer to bodies of water and not to a mapping technique or a specific type of map. Thus, relief maps stand out as the correct choice for illustrating elevation and height variations.