How are density and buoyancy related?
102929
Density is the mass per volume.  Buoyancy is the comparison of an object's density with the density of the surroundings.  Helium balloons rise being lifted by the surrounding air sinking around them.  They are less dense than the air they displace, hense are buoyant.
885671
DENSITY is the key.\n\nRemember, an aircraft carrier will float in water because it is less dense than the water.  To calculate density, divide mass - kilograms (m) by volume - cubic meters (v).\n\nPure water at 25 degrees Centigrade has a density of 998 kg/m^3 so any object with a density lower than this would float.  Higher would sink.\n\nInteresting note:  If you could find a body of water large enough, the planet Saturn would actually float in it since it is less dense.
58570
Density is measured by weight per unit of volume, such as the density of water is 62.4 pounds per cubic foot.\n\nViscosity is a measurement of the rate at which a liquid flows or more accurately, its resistance to flowing. Water has low viscosity, honey has high viscosity.
258755
Density doesn't have properties. Density IS a property of all matter. All matter has density. Density measures the amount of matter in a given volume. In other words, density measures the amount of 'stuff' packed into a given shape. The formula for density is density = mass divided by volume.
209077
THere are layes of the ocean with differing salinity (salt) concentrations.  I don't think that a layer as you described could exist.  Buoyancy is a result of several factors.
38813
density has an equation density=mass/volume\nClay in a ball has the same mass and volume as rolled into a ball (considering of course no clay comes off on the table). So the density would be calculated the same,no matter the shape.
122240
Buoyancy\nIn physics, buoyancy is an upward force on an object immersed in a fluid (i.e. a liquid or a gas), enabling it to float or at least to appear to become lighter. If the buoyancy exceeds the weight, then the object floats; if the weight exceeds the buoyancy, the object sinks. If the buoyancy equals the weight, the body has neutral buoyancy and may remain at its level. It was the ancient Greek, Archimedes of Syracuse, who first discovered the law of buoyancy, sometimes called Archimedes' principle:\n\nThe buoyant force is equal to the weight of the displaced fluid.\nSuppose a rock's weight is measured at 10 newtons when suspended by a string in a vacuum. Suppose that when the rock is lowered by the string into water, it displaces water whose weight is 3 newtons. The force it then exerts on the string from which it hangs will be 10 newtons minus the 3 newtons of buoyant force: 10 − 3 = 7 newtons.\n\nBuoyancy is the underlying principle of many vehicles such as boats, ships, balloons, and airships.
1102336
Density is the mass per unit volume of a substance while specific gravity is an index that describes the ratio  of the substance density to the density of water.
162268
The density of the fluid and the density of the object.
289385
Denser materials can "float" in the sense of remaining suspended, if they are small enough; think of candle soot. The particles must be small enough so that their fall rate is dominated by their air resistance rather than their weight. Such floating is also helped by brownian motion.
314230
yes...if you change the temperature....the density of water for example changes with its temperature....
594106
Density is a factor that cannot be changed except by physical changes such as phase changes. 1 Liter of water at 5°C will have the same density as 1 Liter of water at 90°C, and because density is g/cm^3, the density of 1, 10, or 100 milliliters(a unit of liquid volume) of water is the same, because water weighs 1 gram per millilter, so 1/1=1density),\n10g/10ml=1, and 100g/100ml=1
347041
density has to do with the relationship between mass and volume. Water has a density of 1. As long as the mass stays in the same relationship with the volume of water, it has the same density.
494602
density of substance is equal to the ratio of mass of the substance to the volume of the substance.\n \ndensity=mass/volume
677263
Density is mass/volume.  Find its mass by weighing it. Find its volume by immersing it in water and measuring how much water it displaces.  That is its volume.\nDivide mass by volume and you've got density.\nP.
443459
Buoyancy is responsible for floating everything on the water surface. Buoyant force is proportional to the surface area of the object. For ship is is too much and for ball it is too less.
886684
It would be because of the density of the matter..