week+9

Look up in the online dictionaries the next words

=
ARCADE : a covered area or passage in which there are shops, or a covered passage joined to a building on one side and with columns and arches along the other side/ Pasillo =====

downhill: (moving) towards the bottom of a hill/ cuesta abajo

burrow: to dig a hole in the ground, especially to live in/ Madriguera carve: to make something by cutting into especially wood or stone, or to cut into the surface of stone, wood, etc/ Atrincherar

shaft: a long, either vertical or sloping, passage through a building or through the ground / Pozo

dig: to break up and move earth using a tool, a machine or your hands / cavar

crawl: to move slowly or with difficulty, especially (of a person) with the body stretched out along the ground or on hands and knees / avanzar lentamente

shallow: having only a short distance from the top to the bottom / superficie

Raise: to lift something to a higher position / elevar

Beneath: in or to a lower position than, under / debajo

watertight having no openings to allow the entry of water:/ Estancar

force: to use physical strength or effort to make something move or open / fuerza

Ask the Question:

1. What is a chorobates?

Is a tool used to measure a slightly sloping line that connects the water source in the city

2. Why is it used? engineers can figure out where the water needs to flow below ground in tunnels, on the surface in covered trenches or in pressurized pipes, or above ground on walls or arcades.

3. What are the parts of an aqueduct?


 * [|Covered Trench]
 * [|Tunnel]
 * [|Pressurized Pipe]
 * [|Wall]
 * [|Arcade]

4. When should you build a trench?

Because The Trenches are used when the aqueduct follows the contours of the land

5. Under what conditions should you build one?

Sometimes, aqueduct engineers should carve a tunnel through a mountain rather than build a trench around one.

6. Why do you need to build shafts?

When not too deep, shafts are dug down vertically from above to intersect with the proposed path of the tunnel.

7. When will you need to use pressurized pipes?

When faced with a deep valley

8. What are they made of?

The pipes are usually built of lead

9. When will you have to build walls?

When aqueduct engineers have to cross shallow depressions in the landscape, they should build the aqueduct on a wall

10. What disadvantages are there to building these?

walls can impede the natural flow of water and people.

11. When should you build an arcade?

When the aqueduct must flow higher than about five feet

12. What are the advantages of building them?

The arched arcades require less material than walls and don't interfere with the passage of water or people through the environment.