Archimedes

how do you get water uphill?

Job: agriculture soil specialist
Scenario: your client wants to plant crops in a field 1.5 m above the local river. he needs to get water to this field and has no electricity to run a pump and no hose. he must start from scratch! how will he achive this?




this is the screw pump he invented to bring water 1.5 metres up a hill
Archimedes' screw. The Archimedes screw, also called the Archimedean screw or screwpump, is a machine historically used for transferring water from a low-lying body of water into irrigation ditches. Water is pumped by turning a screw-shaped surface inside a pipe. The Archimedes screw is a machine that can raise water with much less effort than lifting buckets. It was invented by the Greek scientist Archimedes, though the year is not known. Archimedes lived in Syracuse, Sicily (now part of Italy) between the years 287 B.C. and 212 B.C.

Exploring blogs

We are learning to create a positive digital footprint.

We often share personal information when we are online. The people we share with could be our friends and family or people we don't know. We need to make smart decisions about what personal information we share online.

Reflection

Engineer.

What is an Engineer?
What type of engineers are there?


 What is an engineer?  
an engineer is a person who designs, builds, or maintains engines, machines, or structures.

what type of engineers are there?
Software 
Aerospace
Civil
 Environmental
Biomedical 

mechanical

Task:

build a tower to support 500g.
3 sheets of news paper.
1m sellotape.
1m string.

My Audience

We are learning to create a positive digital footprint.

We often share personal information when we are online. The people we share with could be our friends and family or people we don't know. We need to make smart decisions about what personal information we share online.

buisness and enterprise today

today we did alot of paper work and made our animal packages


my next step is to get breanna to do more work at paticipate as a group

Christchurch Water

1. chch storm water:                                                                                                   
                                                                                                                                    
what is it?    surface water in abnormal quantity resulting from heavy falls of rain or snow.        where does it go?  storm water goes directly into streams, rivers, ponds, lakes and wet and damp places.
 what contaminates it?  The water gets contaminated by difrent types of rubbish such as cigarettes ,cans, paper or plastic bags

2. chch waste water: 
what is it? The ccc maintains wastewater systems to provide the community with a safe and healthy environment through the appropriate treatment.
where does it go? chch waste water goes to a treatment plant.
what contaminates it: drug contaminated our waste water




3. where does chch get its water? chch gets its water from underground reservoirs.
how is it purified? chch water is treated in a special way if not treated right it can give you a disease called waterborne.
what pollutes our city water before we drink it?  trash pollutes the water

4. where does Aucklands water supply come from? Aucklands water supply comes from hunua and waitakere ranges together they supply 80 percent of the regions drinking water.
(more than one place)

5. what water borne diseases are parasites can we catch in nz?  ( hopefully not in chch!!!)

Diarrhoea,arsenicosis,typhoid,trachoma,schistosomiasis,malaria,intestinal worms,HIV/Aids,  guinea worm disease and fluorosis

What do they do to us ie how do they affect us?   All of these diseases can kill you

6. chch's waste water is treated after use.
where is it treated? at a water waste treatment plant one located in lyttelton.
what are the steps involved in treating it? they use filters

What happens at each step? gutters leads to lakes and rivers
how long does each step take? each step takes about 5 mins.
Where does the treated wastewater go? the wastewater goes to a water plant to store the treated water to keep fresh.

7. small towns do not always treat their waste water in the same way as chch. TASK. name a small town that has a waste water treatment system.
waimangaroa is a small town with a water system
how do they treat their water? with water systems and they water their garden in special ways.
is it as good as chchs system? no it is not as good but it does its job and since its a small town with small numbers of people they dont need as much water as we do 

cabbage chemistry

what does organic mean?
" is an indicators?

Prac:
Red cabbage is used as an indicator. It will change colour in acids and bases. Put a couple of drops of each test sample onto a spotting tray. Add a couple of drops of red cabbage. Note the colour.

Chemist

What does a chemist do?
Prac.   BIG PIECES/ small pieces

Use: Quiz Eze tablets
Expt: for each of the following use 60 ml water and record to dissolve completely. You will have 4 beakers.

A.  Use a hole tablet
B.  Cut 1 tablet in half and put both into the water.
C.  Cut 1tablet into 4 pieces and put all 4 pieces into the water.
D.  Crush 1tablet and add all of it into the water.


Results:

we need to chew the tablets up for a fast reaction and to dissolve quickly in your stomach a whole tablet takes about 30 minutes to dissolve completely half is about 20 minutes and in quarters 15 minutes where the chewed up one takes about 5 - 6 minutes minimum.

Hokey pokey

 1.   5T sugar
       2T Golden syrup

2. 1t  baking soda


A.  Heat gently stir constantly

B. Add stir vigorously