Houses & Buildings - SWIMMING POOL & SPA TECHNICIAN
pH
and Pool Technicians
Primary
Middle
Australian
Curriculum General Capability:
Literacy
1. Read the following
information and visit the website to understand "pH"
"The pH level indicates
how acidic or alkaline the water is at any given time. A pH level of
7 means that water is neutral; above 7 means the water is alkaline,
while below 7 indicates acidity. You should aim for a pH level of
between 7 and 7.6. If the water pH is higher than 8, anyone who
swims in the pool is at risk of skin rashes, while a pH of lower
than 7 can sting the swimmers' eyes.
Some of the many factors that can affect your pool's pH level
include heavy rain, lots of swimmers and pool chemicals."
(Source:
Better Health Channel)
The pH Factor - Miami Science Museum
This site explains pH and has been translated into Chinese and Japanese.
2. Play the pH Scale Game
3. Make Red Cabbage pH Paper following the instructions below:
How to make Red Cabbage pH Paper
4. After you have made this pH Paper, test it on pool water! Was it a neutral pH (7)?
What
lies lurking in your swimming pool? Fact check!
Secondary
Australian
Curriculum General Capability:
Literacy
Australian
Curriculum General Capability:
Personal and social capability
1. Read the following article
in
The Conversation 25 December 2015 and draw up a list of
microorganisms, their names, find a photo or image and describe the
diseases they cause in a table.
| Name of microorganism | Picture of Microorganism | Diseases caused |
2. Now read the following article from
The Australian Academy of Science
3. Draw up a fourth column on your table called
"Interesting facts" and add any information that you found
interesting from this new article from the Australian Academy of
Science.
What did you find particularly "yucky"?
|
Did You Know? Peeing in the Swimming Pool can change its chemistry?  (Source: ABC Splash) Ammonia and ammonia-like compounds found in human sweat and urine react with hypochlorous acid, producing chloramines. It is these, not chlorine, that cause the characteristic smell of swimming pools. They can cause wheeziness and sore eyes for some swimmers. Peeing in the pool helps produce more trichloroamine, as the uric acid present in urine helps to create it. It also produces small amounts of cyanogen chloride. Chlorine contained in these kinds of by-products of chlorination is referred to as ‘combined chlorine’ (CC). (Source: ABC Splash) |
Websites,
Games & Apps
Cost: $1.99
"Designed for pool and spa owners, select the
Easy Balance feature to enter pH, Chlorine and get the basic
information. For those more curious, enter more information and test
results (from any test kit) into the Pool Doctor app, and get a
customized treatment prescription. This app has calculators for
determining water volume in 3 standard pool/spa shapes (rectangular,
circular, oval), along with information on how to calculate water
volume in unusually shaped pools and spas. It's hard not to smile
when "Doctor's Orders" are issued. Includes an Ask the Doctor
feature with 24 hr email response to your tough chemical questions."
(Source:
Pool Apps for your Smartphone)
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