Why not? Girl-ancy

Hey guys! Get it? GIRL-ancy, BOY-ancy? Bahahahahahahahaha.... SuperSara here, and just to warn you, I am very hyper, due to the fact Katie gave me some chocolate! Yummmmmmm....and the fact that Fatima just might be the worst singer ever. Anyways, today we are going talk about something totally new, something the world had never seen before. Haha, just kidding, but really, today we will be talking about buoyancy. Buoyancy is the way objects float, sink, you know all that jazz. There are three types of Buoyancy:

POSITIVE BUOYANCY:
When something Floats. Simple as that. Now why does it float? Look in the picture below.

  You see that boat? It's floating, so it has positive buoyancy. So how does a boat float... and yet a penny sicks almost instantly? Doesn't a ship weigh more than a penny? Weight has nothing to do with whether something sinks/floats. The boat is less dense than the water. Density has to do with how tightly packed the atoms are. A penny is denser than water, causing it to sink... which brings me to my next topic:    

NEGATIVE BUOYANCY:
When something sinks.  Now why does it sink?

  The penny is denser than water, as you see above. So, it sinks. 

NEUTRAL BUOYANCY: 

When something doesn't sink or float. Weird right?

  So yesterday we were doing this experiment. We had a test tube sort of thing, filled with water and oil. Of course, the oil rose above the water so it looked like this:

  Again, density in action! The water is denser than the oil, causing the oil to rise and not mix with the water. But anyways, we tried to put a rock or something... I can't remember... but it didn't float or sink, it just awkwardly stayed there in the middle. So that... is neutral buoyancy.

  Now for the second part....

ARCHIMEDES! 

  So once upon a time (seriously wayyyy long ago), the King of the town (I'm guessing Sicily, that's where Archimedes was born) asked the gold smith to make him crown made out of gold, which the king gave to him. After the crown was finished, Archimedes noticed that the crown did not resemble real gold, and the gold smith might have mixed in some silver and kept some gold for himself.

   Archimedes was thinking about how to solve this problem (to see whether the gold was real/ not) and decided to take a bath. During his bath, he noticed when he got out of the tub there was less water (because your body takes up the space of the water). He is so excited he runs naked through the streets shouting "EUREKA!" which means "I've found it!". Archimedes used water to prove that if the crown was real gold, the water would sink just to the top of the glass he used, and if it was gold and silver, it would overflow. It overflowed, the mystery was proved, and history was made. 

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  Welllll.... here's a video. Cool experiment; try it at home for sure.

  Well... I think that's it. Check out some of the cool links below for other blog-mates/ cool stuff to read! SuperSaraSuperBye!!!!!!!!!

Feebers' Blog

Kiwi's blog

I want to do Logan's blog but I can't find the link!

Another cool experiment!

Density Games

Again... THE BIG SMILEY!!!