Because they are. They don't have to be but if you dropped one it would sink to the bottom. Also if they weren't they would be a bit difficult to lift due to the weight.
Ice is less dense than water
A wooden block can be less dense than water.
no
Oil IS already less dense than water.
Easy, put a fruit in water and if it floats it is less dense than water.
Yes. Anything that is less dense than water will float on water.
Chlorine gas is less dense than water, so it will float on top of water if the two are in contact.
Water is less dense than any of the other materials listed.In order of density from least to highest:Water (least dense)GraniteBasaltIron (most dense)
no beacause a rubber duck floats and if an object floats in water, is is less dense than the water if it sinks it is more dense
No, the only planet in the solar system less dense than water is Saturn.
You can put a uniform object into water.If it sinks density is higher than water,if floats lesser than water.If you can place anywhere in water,density is equal to water.
You can determine whether a solid substance is more or less dense than water by comparing their densities. If the density of the substance is greater than the density of water (1 g/cm^3), then the substance is more dense. If the density of the substance is less than the density of water, then the substance is less dense.