if the earth is round why is the suez cannel completely flat for 120 miles?

The Suez Canal, like many other large-scale engineering projects, appears flat when viewed over relatively short distances, such as the 120 miles of the canal. This perception of flatness is due to several factors: 1. **Earth’s Curvature**: The Earth's curvature is subtle at such short distances. While the Earth is approximately 24,901 miles in circumference, the curvature becomes noticeable only at greater distances. For example, the curvature means that for every mile of distance, the Earth's surface drops about 8 inches, which is not easily perceivable over the span of a canal. 2. **Engineering Design**: The Suez Canal was designed to be as straight and level as possible to facilitate navigation. Engineers worked to keep the canal as straight and flat as practical, which contributes to the appearance of flatness. 3. **Perspective**: Our visual perception can be affected by the scale of the landscape. When you look at large structures like canals, they can appear flat because the horizon is relatively close in comparison to the vastness of the Earth's curvature. In conclusion, the apparent flatness of the Suez Canal does not contradict the Earth's sphericity, as the curvature becomes noticeable only over larger distances.