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It is because some things have air in them. A sponge has air in it so it would float. a pair of socks would soon soak up all of the water and sink.
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It really is complicated. Some objects float mainly because of their shape; you could float a glass bowl on water if it has a stable enough shape, but a sphere of glass with the same mass as the bowl would obviously sink. Many of the materials in an ocean liner would sink, including the materials that make up the hull and basic inner structure, if they were formed into spheres.
But not all substances would sink even if formed into solid spheres. Such an object will sink in water if its density is greater than the density (specific gravity) of the water. It will float if it is less dense than the water.
What else can I help you with?
What determines whether objects float or sink in water?
The density of an object compared to the density of water determines whether it will float or sink. If the object is less dense than water, it will float. If it is more dense, it will sink.
Will a fork sink or float?
A fork will sink in water, as it is denser than water. The density of an object determines whether it will sink or float in water.
Do ceramic float or sink?
a solid ceramic object would sink. however, if the object is displacing enough water proportional to it's weight, then it will float. If you put an empty glass bowl in the water, it will float; but if you allow water in, it will sink. This applies to ceramics.
How do you determine if something will sink or float in water?
To determine if an object will sink or float in water, you compare the density of the object to the density of water. If the object is denser than water, it will sink. If the object is less dense than water, it will float. The principle of buoyancy, which states that an object will float if it displaces an amount of water equal to its weight, also plays a role in determining whether something will sink or float.
What will an object less dense then water do when placed in water float or sink?
float
What affects how an object sink and float in water?
the density of the object
Can you use density of an object to predict whether it will float or sink in water?
Yes, you can use density to predict whether an object will float or sink in water. If the density of an object is less than the density of water (1 g/cm³), it will float. If the density of an object is greater than the density of water, it will sink.
If an object is less dense than water will it float or sink?
It will float.
What happens when an object is placed in water?
it will sink of it will float.
How can you use density to determine if an object will sink or float a fluid?
If the density of an object is lower than water then it will float, if the density is higher it will sink.
Will a marble float in water?
No, a marble will sink in water because it is denser than water. The density of an object determines whether it will float or sink in water.
Does the denser object sink in water?
It depends! If it is more dense than water then it will sink. If not it will float.
