Boat Design

 

Water Experiments

 

Title:DLO	Water Tension DLO
Question	How much tension can multiple water droplets hold?
Research	Test water tension on a 20c coin
Hypothesis	Can the coin hold 8 drops on the heads side?
Experiment Equipment method	We got given a straw, A flask of 20ml of water and a 20c coin.  We used the straw to collect the water by sealing the pressure on the top of the straw and slowly releasing the pressure of the water to make a water droplet fall on the coin.
Collect Data	7 drops on heads side, 18 on tails side.
Analyze	We could fit 18 droplets on the tails of the coin.
Conclusion	We think that this was the limit because we couldn’t manage to fit anymore droplets on the coin. There was another group that could only get to the same amount.
Report	We had a hypothesis and that was how many droplets of water could fit on a 20c coin. We estimated 5 droplets of water on the heads side of a 20 cent coin, the result we got was 7 drops of water on the coin before the surface tension burst and the water flowed off the coin!

School Bike Ride

     School Bike Ride

On Wednesday the 26 of May we went on a school bike ride. For the start we had to get to school early in the morning and do a quick recap of the rules and where we needed to go in order to get to the first bike ride location. We were heading to the Mananui Tramline. Then as our second bike ride we would do the Hurunui Jacks bike ride. Both were part of the wilderness trail. 

We set off on our way. We had to go through Hokitika and pass the Hokitika bridge. The sun was high in the sky and it was warm, but cold at the same time. 

It was freezing when we got there and some of the surrounding farm paddocks were white with frost. The Mananui tramline was a simple flat trail that went through a couple of paddocks where cattle were grazing. The trail eventually led out to Lake Mahinapua where there was the site of an historic deadly battle, but we did not do that part of the trail. Every once in a while we had to stop to read our compasses that Ms Kemp gave us. We kept going through to the end where there was a car park. On the way back there was a lot of downhill and some nice roots and rocks to jump over with speed. Overall it was pretty basic.

The second bike ride was harder because it had a lot more uphill and narrower trail sections. It was also a lot longer with sharp corners and water races and boardwalks that were slippery. Most of the trail was gravel with the odd dirt section. Every once and a while there was a water ford that you could ride through. A few people fell off but only one of them had blood involved. When we got to the end we had an option to go fast and I along with some others did that. It was a fast trip back to the end of the bike track as it was downhill. 

In conclusion both bike rides were enjoyable because one was fairly easy, and one was medium and everyone could do both. Both bike rides went to outdoor activity hours for William Pike.