Band 7+: The diagrams below show how people supply water to a city using Roman Aqueduct and Modern Syphon. Summarise the information by selecting and reporting the main features, and make comparisons where relevant.

The diagrams illustrate how water is transported from a reservoir to a city using two different systems: the Roman aqueduct and the modern syphon system.

Overall, both systems serve the same purpose: delivering water from a reservoir to urban areas. However, the modern system consists of an additional step and a different method of transporting water over terrain.

In the Roman aqueduct system,w ater from the reservoir is first collected at the intake point and then flows through a conduit. The aqueduct bridge allows the water to maintain a downward flow over uneven land, ensuring it reaches the city using gravity only. After that, the water is delivered directly to the city and flows into the sea.

On the other hand, the modern syphon system witnessed several updates. After passing through the intakeon conduit, water flows through a syphon which enables it to move up and down without a continuous downward slope. Before reaching the city, the water is processed at a treatment plant, cleaning the water and ensures its safety before consumption.