cold water

Question 1

what is considered cold water?

Answer 1

water under 70 degrees

Question 2

what is transpiration?

Answer 2

water moves through plants until it reaches the leaves where it evaporates into the atmosphere

Question 3

what is precipitation?

Answer 3

another word for rain when water vapour precipitates condenses back into water droplets and falls on the earth as rain.

Question 4

what is evaporation?

Answer 4

water is constantly evaporating from the oceans,lakes,rivers and streams

Question 5

what is filtration?

Answer 5

there are several types to filter used to filter drinking water

Question 6

What are springs?

Answer 6

These occur naturally,following directly from the earths surface.

Question 7

What year was the water act?

Answer 7

2003

Question 8

What is screening?

Answer 8

First,the water is passed through a series off coarse meshes to remove large debris such as leaves,plants

Question 9

What is disinfection?

Answer 9

The final stage of the water treatment process is disinfection.this is where small amount of chlorine usally less then 1 milligram per litre of water

Question 10

What are bore wholes?

Answer 10

These are man-made small diameter wells

Question 11

What are deep wells?

Answer 11

Usually dug by a machine from below the shallowest imperamble strata.

Question 12

What are shallow wells?

Answer 12

Historically; shallow wells have been dug by hand and only penetrate the first water bearing strata or aquifer

Question 13

What is distribution of water supply?

Answer 13

After the water has gone through the treatment process it is distributed to home and businesses throughout the uk

Question 14

Which is British standard makes recommendations of cold water cistern for a particular property?

Answer 14

Bs6700

Question 15

The water flow rate from a cold water tap is 8 litres per min what is the flow rate measured per second?

Answer 15

0.13l/s

Question 16

What is the first stage of the rainwater cycle?

Answer 16

Evaporation

Question 17

What is the primary purpose of flocculation in water treatment?

Answer 17

To remove color and turbidity

Question 18

What device prevents backflow in outdoor taps?

Answer 18

Double check valve

Question 19

In indirect systems, what should cold water cisterns provide?

Answer 19

Adequate storage capacity

Question 20

Which material is commonly used for modern cold water supply pipes?

Answer 20

Medium-Density Polyethylene (MDPE)

Question 21

At what depth should a supply pipe be installed?

Answer 21

750-1350mm

Question 22

What is a key advantage of gravity water distribution?

Answer 22

No pumps are required

Question 23

In an indirect cold water system, which outlet is usually fed directly by the mains?

Answer 23

Kitchen sink

Question 24

What is the final stage of the water treatment process?

Answer 24

Disinfection

Question 25

What is a major disadvantage of a direct cold water system?

Answer 25

Risk of contamination during failure

Question 26

What is the purpose of a water tower in a distribution system?

Answer 26

To increase pressure through height

Question 27

Which type of shower valve adjusts for fluctuations in water pressure?

Answer 27

Pressure-compensating valve

Question 28

Which type of pump boosts water after the shower valve?

Answer 28

Single impeller

Question 29

What is required for cold water cisterns installed in the roof space?

Answer 29

Structural support

Question 30

Which tap type avoids mixing water inside the tap body?

Answer 30

Bi-flow mixer taps