Monday, November 04, 2013

Science: Race A Speedboat Experiment

Race a Speedboat
Can you make a paper boat race across the water just by gently touching the surface of the water?
Hypothesis
I think that as you touch the water gently with a little dish wash on your finger the water might get a little bubbly and it might make the water push away. Just like how I wash the dishes at home. As I put the dish wash on any plate or glass the soap starts getting bubbly.



Materials
Coloured card, washing up liquid, pencil or sharpie, scissors, large container of water.

Method
We created a boat out of paper. Mine was shaped like a ghost because it is a Halloween. My group ( Me, Jessica, Emma, Imaan and Nikitah  ) all had a dab of dish washing liquid on our finger and placed the paper boat in the water. We put our finger behind the boat and the boat went flying off without touching it

Observation
As we put the boat in the water along with the dish washing liquid behind it the paper boat started to move like a real boat out at sea.



Conclusion
The boat was spread out on the water surface. So the dish-washing liquid was actually spread out. The dish washing liquid changed the waters tension by as you touch the water behind the boat it makes the water weak so your are actually pulling it.




Short Experiment to Follow Up
Make Metal Float
Gently place a paperclip on the water’s surface.

Hypothesis/Prediction
When the paperclip is placed on the calm water I think that it will maybe float because the paperclip has holes in it just like a yacht and kayak. The water helps both of them float.



Observation
The water kind of makes a dent around the paperclip. The water helps the paperclip do that because the paperclip is on a side.



Conclusion

If another metal thing like an anchor was thrown out to sea it wouldn't float but will stay underwater but if you put it on a side just like the paperclip it will stay because of the dent I was talking about before.

Wow it works! The boat is calmly floating as someone puts their finger behind it.

Oh no, we are going to crash!


2 comments:

  1. Awesome Hemani
    I like how you put captions in
    Keep up the good work
    Well done

    ReplyDelete
  2. Awesome Hemani
    Great work.
    Your captions are great.
    Keep up the good work.
    Well done:)

    ReplyDelete

Related Posts Plugin for WordPress, Blogger...