LEARN: Fundamentals of water recycling

Learning Manual

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H O Pump2H O Pump2

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LEARN: Fundamentals of water recycling

How it works?

Science behind atmospheric pressure and pressure difference:

? Insert 2 AA size batteries to the battery compartment.? Water will flow through the pump and the rocket and finally back to the reusable box. ? During this process, you can see the foam ball floating in the rocket and even push away the rocket head!? Ensure all wires are correctly connected to the battery terminals and spring connector.? Bend the spring connector over and insert the exposed shiny conductor part of wire into the spring connector. ? If the circuit does not work, make sure the insulated “plastic” part of the wire is not obstructing the connection to the spring connector? Make sure the wires are securely connected.? Fill the rocket body with water to a level slightly higher than the lower hole of the rocket body? Dip the shaft with water to ensure smooth action of the pump? Do not immerse the tube 5(a) in the water? The tube must stay above the water; otherwise water in the rocket would not flow back to the reusable box.? Switch ON

H O Pump is a “recycle water” pump. You just have to fill adequate water in the water tank 2and connect all tubes as instruction. Then the kit will function non-stop and without the need of refilling the water tank. You can see the water runs from lower level to higher level through the H O pump system as a “cycle”. H2O pump is a device which pumps water from lower ground to 2higher ground and the recycle the water back to the water tank. How water can be pumped to higher level? This is because pump creates a pressure difference, and thus water in the water tank will be pushed by atmosphere pressure to go upward .At the same time the pump will push water in the water tank will be pushed by rocket body. The water pump is powered by electric power and works by using mechanical force to physically pull and push water from lower ground to higher ground.

This is a D.I.Y (do-it-yourself) educational science kit that provides useful knowledge about simple physics. “You'll be amazed” to learn realistic concepts of basic physical theory through exciting activities.

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Water pumped out from dipper underground areas is usually cleaner. Therefore water pump is common equipment used in some developing countries to provide cleaner and safer water. Underground water is pumped for use due to absence of clean drinking water from polluted river, and lack of reliable water supply system such as a reservoir.

How does water slide work?

Do you know?

As we've seen, a water slide needs a constant stream of water to reduce friction between you and the fiberglass surface. To maintain this stream, the water park has to get a supply of water to the top of the slide. Most water slides do this with a pump, housed in a building near the base of the slide. In the standard design, the pump motor turns a drive shaft, which is attached to a propeller. The spinning propeller drives water forward, in the same way an airplane propeller moves air particles.

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The pump draws water from a collection sump, typically the pool at the base of the slide, and pushes it up through a narrow pipe to the top of the slide. In this way, the water running down the slide is constantly recycled. In some parks, the water is cycled through several connected pools before it is pumped back up to the top of a slide.

Close up View of water pump

From collectionpool

Collection Pool

Send

Gravel

Water Filter

One wayvalve

To slide Tower

Pump motor

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Quiz

1.What would happen if the upper most pipe of the rocket is dipped in the water tank? (a)Water flow easily in the water tank (b)Flow of water will be slow (c)There is no water flow (d)There is no effect on water flow

2.What would happen if we remove the foam ball from the rocket? (a)There will be no water flow from the upper pipe of the rocket (b)There will be no water displace from the rocket (c)There will be less pressure create into the rocket (d)Both (b) and (c)

Additional DIY

1.Water Pressure

Focus Certainly you must have tried to dive to the bottom of a swimming pool. It's not so easy. At the bottom, you must have felt the pressure of water on your body and especially in your ears. Pressure can be used to move water through pipes and appliances in your home.

Where is pressure greatest? Materials required:

I. 2x2L plastic bottle, with lidii. Heated sewing needleiii. Tidy trayiv. Waterv. Food dyevi. Plastic piping or straw

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Procedure

Step 1: Heat one end of the needle using a match and place four holes equidistant up the 2L bottle. Step 2: Place a strip of sticky tape over the holes firmly. Place in tidy tray. Using food dye to make water clearer to see, fill with water. Step 3: When the tape is pulled off what will the water do as it comes out?

Observation:

Pull off the strip of tape with one movement. Q1. What did the water do as it came out? Sketch your observations on Diag.2 Q2. Was your guess corrects? Explain your observations: Q3. Why did the squirts of water go different lengths? Q4. Where do you think the pressure (push) is greater?

2. Measuring the difference? What might happen if a water tank sprung a leak? Suppose you fill a plastic soft drink bottle with water and make a hole on one side, what will happen to the water? What if the bottle is only half full?

Focus

Thumb tack or blue tack

Bottle cap

Pan

Can or plastic box 1 liter funnel

Rule

Materials required:

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Procedure

Step 1: Put the can or plastic box upside down in one corner of the pan.

Step2: The 1 liter bottle has a hole near the bottom. Put the thumb-tack in the hole.

Step 3: Fill the 1 liter bottle with 5cms of water.

Step 4: Put the bottle on the can or box with hole facing the opposite corner. Pull out the thumb-tack and measure how far the water squirts into the pan from the edge of the bottle. Put the thumb tack back in. Record your result.

Step 5: Repeat the steps 3-5 for each of the entries in the following table.

Step 6: When you have finished, graph your results. Remember to label your graph.

Observation:

Pull off the strip of tape with one movement. Q1. What did the water do as it came out? Sketch your observations on Diag.2 Q2. Was your guess corrects? Explain your observations: Q3. Why did the squirts of water go different lengths? Q4. Where do you think the pressure (push) is greater?

Results

Height of water in bottle

5cm

10cm

15cm20cm

25cm

Distance water squirts (cm) Average

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References:

http://www.nrw.qld.gov.au/waterwise/resources/pdf/activities/6_9waterpressure.pdfhttp://www.pbs.org/wgbh/buildingbig/educator/act_pressure_ei.html

http://qldscienceteachers.tripod.com/junior/expt/physics_density.html(Similar activities)

(Experiments based on water pressure)

How to connect:

1• Put the foam ball (04) into How to play the rocket body (02). Combine he rocket head (01), body (02) and stand (03) together

2• Insert plastic tubes (5a & 5b) into the upper and lower holes of the rocket body respectively.

3• Insert the shaft (07) into the pump (06).

4• Fix the cap (08) on the gearbox (09).

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5• Install the gearbox (09) and the pump (06) on the box base (13). Make sure that both gearbox and pump are placed at the right position, andthe cap of the gearbox is fully locked in the shaft of the pump.

6• Install the rocket on the box base (13).Connect the plastic tube (5b) opening ends of the rocket to the pump’s hole (6b).

7• Install the battery compartment (10) and the ON/OFF switch (11) on the box base (13).

8• Install 3 spring connectors (12a,12b,12c) on the base (13). Narrow end faces down, push the spring as far as it will go.

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9• Connect red battery wire to the spring connector (12c) and black battery wire to the spring connector (12a).

10• Connect one wire of the ON/OFF switch to the spring connector (12b) and the other wire connects to the spring connector (12c).

11• Connect the gear box (09) to the spring connectors, red wire to the spring connector (12b) and black wire to the spring connector (12a).

12• Install the 2 extend stands (14) and put the box base (13) on top. Place the plastic tube (5a) somewhere above the Eco- friendly reusable box (15),so that water passing through the tube will return to the box.

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13• Finally connect the plastic tube (5c) to the pump’s hole (6a) and the other end to the Eco friendly reusable box (15). Fill water into the Eco-friendly reusable box (15). Note that tube (5c) has to be submerged in the water and tube (5a) has to remain above the water level.

Gallery:

Warning ! Do not short-circuit the battery terminals and spring connectors. It may cause overheating. Do not lock the motor or other moving parts. It may cause overheating. Water toys sometimes get messy. Protect play surfaces before use. Drain, rinse, clean and dry all items thoroughly before storing.

http://www.youtube.com/watch?v=S4B2gODY3Mk&feature=PlayList&p=EA3FF83DC8D9FCA0 & playnext=1&playnext_from=PL&index=2

http://www.youtube.com/watch?v=JFMENA- 7X3k&feature=related

(How micro hydro power work?)

If at any time in the future you should need to dispose of this product please note that waste electrical products should not be disposed off with household waste. Please recycle where facilities exist. Check with your local authority or retailer forrecycling advice. (Waste Electrical and Electronic Equipment Directive)

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