Monday, February 17, 2014

Lego Travel Adventure Pt. 2 by Eleanor & Sophia

For Lego Travel Adventure Part 2, we did one day at my house and one day at Keon and Levi's house.
We learned about travel by water.





Eleanor: We made tin foil boats and we put Sophia's mini figures into the tin foil boats and this is all the minifigures in MY boat. We were learning about buoyancy, I have found out it's not how good and how much you put for wall, it has to be - well, if you do it out of tin foil it has to be skinny and long. And one layer of tin foil.

We learned about parts of a boat and we ate snack.


 

 Sophia: Water is heavy. Because of this, something is buoyant when it displaces the same water as it weighs. If something is not quite sinking, but not quite floating, you call it neutrally buoyant. This is neutral buoyancy. The coke can in the water above was also neutrally buoyant. This is an example of neutral buoyancy.


 
The toothbrush and the coat hanger were neutrally buoyant too.

  The next week at Keon and Levi's house, we did an experiment on surface tension, and made Lego vehicles to float them using surface tension. If they didn't float we had to re-design them.

We used surface tension to see how much water we could cram into a water bottle drop by drop, and also we did a cool experiment where we had a plate filled with water and pepper sprinkled in the water and we put a tiny drop of soap on the middle. The pepper, because of density, ran away and stuck to the sides of the plate. Even when Levi stuck more soap on the plate, the pepper didn't move.

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