What term is used for the representation of water features on maps?

• A. Isopleths
• B. Hydrography
• C. Legend
• D. Halftone

Answer: (B)

This question tests understanding of how water features are shown on maps. Hydrography is the term used for mapping and describing bodies of water, including the symbols, colors, and labeling that depict rivers, lakes, coastlines, and other water features on charts and maps. The other terms don’t fit this specific purpose: isopleths are lines of equal value (such as elevation or temperature), a legend is the map key that explains symbols, and halftone refers to a printing technique for shading rather than to water feature representation.