Floating rocks: pumice.
Non-floating rocks: all but pumice.
Pumice can float on water because its density is so low, due to trapped bubbles of air which formed during its solidification from lava.
Porous lava rock is called pumice. If placed in water, it would float as it possesses a density that is less than water.
With out knowing further knowledge about the rock it is unable to determine the exact density. However, since the rock floats, presumably in water, the density must be less then 1.00g/L.
Pumice ^^This answer helped me with my 13 pages of science homework.
Pumice is a type of rock that can float on water due to its high porosity and low density. It is formed from volcanic eruptions and is commonly found near volcanic regions.
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
Pumice is a lightweight volcanic rock that floats on water due to its high porosity.
Pumice
Pumice is a grey volcanic rock so full of gas bubbles that it is able to float on water.
Pumice is such a rock.
pumice stone
Porous lava rock is called pumice. If placed in water, it would float as it possesses a density that is less than water.
The rock comes from a volcano and is known as pumice.
Very porous rocks such as pumice can be very light and have the potential to float on water. Pumice is a volcanic rock.
Of course. Fresh water floats on salt water, warmer water floats on cooler water, and ice floats on any water.
If you add the salt to the water, the density of the water increases. so the what ever floats on the water will come up. That mean it will get immersed in the water to less extent. If the salt does not dissolve in the liquid, like rock oil, there will be no difference.
It is less dense than water, therefore it floats on water.
Pumice is a porous rock and slat is not. Pumice floats in water because of the air pockets in the rock. Slate is a layer of rock that is tightly packed, or is very "dense".