Monday, October 25, 2010
Cartesian Diver
Whether an object floats or sinks in fluid depends on the object's density versus the density of the fluid. Since the density of the air in the diver was less than the density of the water, the diver floats. When you squeeze the sides of the bottle, why does the diver fall?
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The diver falls because you add pressure to the bootle and the the water went into the diver and the diver went down.
It floats because when you squeeze it, it increases the pressure. Which changes the volume. And when you find density it's mass divided by volume. So if the volume increases the density increases, making the diver sink.
I learned that if you add pressure to the diver in the water than water will go into the tube and make the diver sink and if you release the pressure some of the water will go out and the diver will float again.
Brittney
the driver sinks when you squeezed the side of the bottle because you are making more water pressure wich fill the driver up with water causeing it to sink. LOgan
hello
I think it sinked because when you squeezed on the bottle water fillde the droper with more water and sank
As you squeeze the bottle the diver starts to fill with some more water compressing the air inside the diver, making it more dense then the water causing it to sink. when you release the bottle the air exanpands and is less dense then the water.
The diver sinks when you squeeze the bottle because the pressure forces the water to go in the diver the make the diver's density be more then water. Zeke Ivanich
when you put presure on the bottle the density is higher then in the tube so it sinks
In this lab , it floats because the density of increases the pressure. This will change the volume. The diver was less denser then the water so it floated and when you squeezed the diver went further down.
The diver falls because you added more pressure to the bottle than there was before.
I learned that you can sink an object by changing the density of the water. And to change the density of the water you squeeze the container that the water is in.
When you squeeze it puts water in the diver. So then it sinks. Then it goes to the bottom of it.
Bridgette
the diver sank because water filled the diver and the diver sank.
At first the diver was less dense that water, Then when you added water presure the volume got bigger and the air molecules condensed and so the diver became more dense than water so it sank.
The reason that the diver goes down is because when you speeze the bottle the gas molecules in the diver gets compressed. Then the volume increases and it goes down. it goes up because the gas molecules expand because the pressure is gone and the volume decreases.
i think it sank because when you squeezed on the bottle, the density in the diver increased so the diver is heavier then the water so the diver sank.
Density is mass/volume. Since the mass of the divers was constant, we can assume it was the volume that changed to cause the density to change to cause the diver to sink. The diver sank because the pressure added to the bottle caused the gas bubble to compress, increasing the density, causing the diver to sink. When you released the pressure, the bubble expanded, giving the molecules more space - increased volume, so decreased density, and the diver floated again.
The divers sank becuase as we added pressure to the little divers the gas molecules compressed and became more dense so therefore they sank to the bottom of the bottle. The mass of the divers didn't increase it stayed as a constant. So the reason we could get them to sink in the correct order is because the different amounts of room for the gas molecules to compress made different amounts of density.
The diver sank because the water was in the diver and the water made it more dense. If there was no water in the diver then it would have been less dense because the diver would not have sunk.
when you squeze the diver it sinks all the way to the bottom. I learned that you can sink an object by the changing of the density of water and to change the density of the water you squeeze the container that the water had been in. When you put pressure on the bootle the density increases or gets higher.
If you squeeze the diver it sinks down to the bottom.
Tristan
what i learned is that when you compress the bottle the tube sinks and its volume changes while the mass is constant. let go it floats and the density is less then water again.
The diver in out lab was first put in water to see if it was more dece or less dence than water. When it was put in the water we found out that it was less dense because it flouted. Then we added water and it became more dense because it sunk.
the diver sang becuase we added pressure to the divers. The gas molecules compressed which made it more dense so it sank to the bottom. The diver was more dense then the water when it sank to the bottom when it floated up it was less dense then the water.
The diver was less dense then water then when you increased pressure on the bottle the air bubble in the diver compressed. Then when you let go the pressure decreased and the air bubble expanded making it float to the top. The divers mass was always the same but its volume changed with decreased and increased pressure.
The diver sank because when you squeeze the bottle it increased pressure which made the air molecules in the diver compress. This made the diver's density increase, which made it sink.
The mass of the bottle is constant it doesn't change. Whenever you squeeze the bottle, the diver sinks and it's volume changes. When you don't squeeze the bottle, the density of the diver is less than the water, so it floats.
the mass of the diver was constant. The diver sank because there was pressure added to the bottle, which made it compress. more density. the diver sank.when the pressure was realesed the diver came back up. molecules having more room. the volume helped the diver float. err something like that :/
As you add pressure the diver sinks and as you let go of the bottle there is less pressure and the diver rises.
It floats because when you squeeze it, it increases the pressure. Which changes the volume. When it does this, it sinks. When you let go, the volume changes back to it's normal state and floats back up.
when u put preasure on the bottle the divers sunk when u released the bottle the preasure became less and the divers rose
The diver falls because there was more pressure added and that made the diver's density more dense than being at the top of the water so it sank because it was more dense than water.
The Diver was less dense than the water when squeezed the bottle,but when you took the pressure off of the bottle there was a huge air bubble, so its density increased and it floated to the top.
The diver sank because when you squeeze the bottle it increased pressure in the bottle which made the air molecules in the divers tube compress. This made the diver's density increase, which made it sink.
When the diver was in the bottle unchanged, the volume was greater than or equal to water. When you added pressure to the bottle, the small amount of air was compressed, reducing the volume. That made the divers more dense, so they sank.
when u squeez the bottle the volume goes down dencity goes up. SO THE DIVER BECAME MORE DENCE AND SANK.
In the beginning, the diver was less dense then the water. When pressure was applied, the volume decreased but mass stayed the same, making it more dense. It got denser then the water and therefore it sunk. When pressure was released the diver began to float.
When doing the Cartesian Diver lab I learned that when you squeezed the bottle, the pocket of air at the top of the bottle shrank so the air had less volume while the diver's density increased to more than water's and sank. When pressure was released from the bottle the air pocket at the top of the bottle grew and had more volume making the diver less dense so it floated to the top once again.
the mass of the bottle is constant. when you squeeze the bottle the little diver thingy sinks down becuse there was pressure added.
In the pop bottle of water, there is an air bubble. When I squeezed the bottle, the Volume of the air bubble decreased and it got compressed together. That made the density heavier than the water which made the divers sink to the bottom depending on how much pressure I put on the bottle. When I let go, the air bubble expanded and the pressure decreased while the volume on the air bubble increased.
By: Marika Bich
In this lab, we had a "diver" dive into a pop bottle. By this, we can predict that by putting pressure on the bottle will cause the diver to sink, making it more dense, than the water itself. Once you released your grip from the bottle, the diver rose once again to the top of the bottle.
The divers pressure increased and decreased when the bottles pressure increased and decreased which caused the diver to go up and down when you squeezed it.
The greater the density the more pressure it puts on the diver. The diver didn't have much density, putting (squeezing the bottle) pressure on that not so much dense bottle of water with the diver made the diver sink. Once the pressure on the diver decresed, so did the density of the bottle. I'm honestly just ramblind on about what comes to mind but, then again, I could be right... but I doubt this. There that's five sentences or so...
-<3&RocketsWinter-
By doing this lab we have all learned that putting pressure on the bottle will make the diver sink. Now what we are trying to figure out why it sinks. I have concluded that the diver sinks because when you squeeze the bottle the diver hole sucks in water which causes it to sink. The density of the diver is larget than the water at that point. When the diver goes up the air molecules inside of it expand. When it sinks the air molecules obviously are compressed.
The Cartesian diver would sink because when you squeeze on the bottle the air bubble would get smaller and so it caused the little cartesian things to sink because of the pressure.
Then when you let go the pressure releases and cause's the cartesian sinkers to float back up.
The diver sank because we added pressure. The molecule were compressed together so the diver sank to the bottom of the bottle. If you let go on the bottle the molecules well expand and it will float back to the top of the bottle
when u add pressure to the bottle the divers sink.as u let go of the bottle u put less pressure on it so the divers rise :)
When you squeeze the botter it increases the pressure. When you do that it changes the volume in the bottle so it sinks. When you let go of the bottle the density of driver is less then water so the volume goes back and so it floats back up.
When you squeeze the bottle, the diver compresses to the bottom and pressure is added. When you add water, it becomes more dense. The mass of the diver remains the same but the water can change. So that is how it sunk.
When you apply pressure onto the bottle, the some fluid is displaced and the only place to go is up. This means more water on top of the diver which means more downward force. This additional downward force causes the downward force to be greater than the buoyancy that was keeping it afloat.
hope this works for my science hw haha
The eyedropper sinks because you are increasing the pressure inside the container and the air molecules in the dropper are becoming less dense and more compressed and it now has a higher density than water and sinks
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