Sportsmanship!

All the facts you need to know about sportsmanship is just below!

Wait Till Martin Comes

Go here to see my podcast!

https://soundcloud.com/sasvidpro/wait-till-martin-comes

Full video on my blog will be posted later.

Cartesian Diver Investigation

To make the diver float in an upright position in a bottle or a beaker, you have just got to fill the diver up with a small bit of water and then put it in the bottle or beaker. When we put the diver into the beaker with a small bit of water in it, the mass changed because the dropper and more water went in it, so it would effect/change the mass. What we used as a ballast to make the diver float up right, was of course the little bit of water in the diver.

What our group did to get the diver work in the bottle, was at first we realized that you can't fill up the diver with to much water to put in the bottle. Otherwise it will just sink to the bottom and you can't squeeze it up. So after that observation we tried filling up the dropper with different amounts of water and tested it in the beaker. Once we got the right amount of water we put it in the water bottle and started to investigate.

So at first we realized when the dropper is first in the water without squeezing it, we observed that it was in an upright position, so it is perfectly straight. Also that the water in it made it perfectly float just right. As well as that the density of it is less than 1g/cm3. And the volume is more than the mass.

When we squeezed the bottle so the diver would be in the middle we observed that the dropper has fully emerged. The droppers position was also slightly tilted when it went in the middle. We also observed that the deeper the dropper get it fills up with more water so it can float in different areas. So the water raised to half way through the dropper. The density of  the dropper half way would be 1g/cm3. And the volume and mass are equal.

Lastly we squeezed the bottle even more so the dropper was finally at the bottom. Again the dropper filled up with more water so the water was at 3/4 filled. As well as the dropper was in an upright position. Also the density of it was more that 1g/cm3. As well as, the volume is less than its mass.

So to make the dropper sink, you need a ballast which is something to that you add to the floating object to make it sink. Also known as, that you just add more mass to the floating object to make it sink. The ballast, in this case would be the water as when we squeeze the bottle it sinks and more water fills into the dropper.

Submarine Homework

How a submarine works is that it has a thin, long shaped body so it can move lightly and swiftly in the ocean. How a submarine goes up and down in the water by using a Ballast Tank.  The Ballast Tanks are made of air so its density is less than the water surrounding it. How the Ballast Tanks work so you can move is that the Ballast Tanks then fill up with water making the entire amount of density of the ship higher than the the surrounding water.

The Food Adventure!

5...4...3...2...1...+8

1,000 Locker's Explanation

In the lockers problem out of the 1,000 lockers 31 lockers will be open in the end. The 31 lockers that are open 1 ,4 ,9 ,16 ,25 ,36 ,49 ,64 ,81 ,100 ,121 ,144 ,169 ,198 ,225 ,256 ,289 ,324 ,361 ,400 441, 484, 529, 576, 625, 676, 729, 784, 841,900, and lastly 961. The reason why these lockers are open is because they are all square numbers. The reason why these square numbers are open is because they have an odd amount of factors.

How I figured out this answer is that on a hundreds chart I went up to the number 30 doing the number pattern from the book. Then I figured out that all the lockers open are square numbers, So then I figured out the rest of the square numbers up to a thousand. SO in the end there are 31 lockers open.