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The ball sinks because it has a higher density than water, causing it to displace less water than its own weight. The cube floats because it has a lower density than water, allowing it to displace more water than its own weight. This difference in density and volume determines whether an object sinks or floats in water.
A marble sinks because it weighs more than the volume of water it displaces (that is, it weighs more than the mass of water having the same volume as the marble). In contrast, a tennis ball is made of a thin rubber shell (which is slightly less dense than water), but more importantly, is hollow inside (and air is MUCH less dense than water). A tennis ball then weighs much less than the same volume of water, therefore it floats. See Archimedes principle.
http://library.thinkquest.org/27948/archimede.html
A marble has closer packed molecules than water and is thus more dense than water and thus sinks.
Materials that are less dense than water float, and materials that are more dense than water sink.
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How do you get an ice cube to sink?
To get an ice cube to sink in water, you need to increase its density. You can achieve this by adding salt to the water. The salt water is denser than the ice, causing the ice cube to sink.
How-to make a floating and sinking bowling ball?
To make a bowling ball float or sink, it's necessary to manipulate its density. To make it float, decrease its density by drilling holes or using materials like foam. To make it sink, increase its density by adding weight to the ball or filling it with denser materials like lead.
Inwater a steel will float or sink?
Steel is denser than water, so it will sink in water. For an object to float in water, it needs to be less dense than water.
If a ball is dropped into a very viscous liquid it will?
A solid metal ball would sink into the very viscous liquid, a hollow metal ball would float. The speed of descent is dependent on the density of the liquid.
Does helium float or sink?
Helium is light and it will float / rise.
Will a solid ball float or sink?
float
Will a perfect cube sink or float?
it depends what the cube is made out of it depends what the cube is made out of
Would a cube that's 50 gram sink or float in water?
it would sink
What happens when you place an ice cube in a beaker of water does it float or sink?
float dua
Will 5 cm cube sink or float in seawater?
It depends on the density of the cube, not the length of its side.
Whould an aluminum ball sink or float?
Depends on the medium, and whether the ball is solid or not. A solid ball would float on mercury, sink in water. If it were hollow enough (or filled with, say, cork) it would float in water.
Which property causes a ball to sink and a boat to float?
Density is the property that causes a ball to sink and a boat to float. If an object is denser than the liquid it is placed in, it will sink, while if the object is less dense than the liquid, it will float.
Will the wooden cube float in water?
It depends on the density of the wood. If the wood is less dense than water, the cube will float. If the wood is more dense than water, the cube will sink.
Does tar float or sink?
It will float for a while than slowly sink because its density as a cube is Heavier than water (by the way waters density is 0.9-1.0 g and Tar is 1.02 g). I hereby conclude with all reasons that tar ( in a shape of a cube) will float then sink
A cube measuring 2cm on each side weights 5g will it sink or float?
Calculate its volume. Divide mass by volume to get its density. Compare that to the density of water - assuming you want to figure out whether it will float or sink in water.
Does a plasticine ball float on water?
No, plasticine is denser than water, so a plasticine ball will sink in water rather than float.
Will a tennis ball float or sink?
A tennis ball will float in water because it is less dense than water. The air inside the ball helps to keep it buoyant on the surface of the water.
