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Why pumice floats while a rock of similar size will sink in the same tank of water?
Wiki User
∙ 7y ago
When pumice is formed - it traps minute amounts of gas in bubbles within the rock itself. This makes it buoyant.
Wiki User
∙ 7y ago
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Why does pumice float while a rock of similar size will sink in the same tank of water?
the rock pumice has air pockets making it less dense than water, while a rock that has a similar size has no air pockets making it more dense than water and therefore sinking.
Does pumice contains ice in it?
Pumice contains silica so you need protection while using it.
Does water have greater density than oil?
No, water has more density than oil. If something denser than water(Eg=Iron) is dropped to water, it sinks, while less denser will float. Oil floats on water. Really I've tested it
What is the size of grains in pumice?
Pumice normally doesn't have any grains at all. It would be very unusual for it to have grains. Just like Obsidian, Pumice is cooled too fast to have any grains in it. One of the biggest differences between them is that Pumice is cooled with pockets of air while Obsidian has a glassy look.
How do you describe pumice rocks?
A pumice rock is an extrusive rock as we all know it can float on water ,the only rock that can float on water it can float because of the holes that have formed due to gas bubbles while it was forming.
Why does pumice float while a rock of similar size will sink in the same tank of water?
the rock pumice has air pockets making it less dense than water, while a rock that has a similar size has no air pockets making it more dense than water and therefore sinking.
Why does a coin sink while a piece of styrofoam of a similar shape and size floats?
Because a coin is more dense than water, while styrofoam is not.
Why does a coin sink in water while a piece of Styrofoam of a similar size and shape floats?
Coins are denser than water. Styrofoam is less dense than water.
What kind of rocks are around pumice?
Pumice is a very light weight rock - it floats in water. It is part of the ejecta of a composite volcano. It may be found in streams or on coastlines nearby to composite volcanoes. If you wanted to buy a small quantity, then one of the science supply houses would help.
Does silk float or sink in water?
It floats, but after a while silk will sink.
When gasoline and water are mixed together which one ends on top?
Gasoline has a density of around .71g/mL while water's density is 1g/mL so Gasoline floats on Water.
Does pumice contains ice in it?
Pumice contains silica so you need protection while using it.
Is there pumice in clay?
No. Clay consists of highly weathered material. While some components of pumice may by re-worked into clay, it will have long since ceased to be pumice.
A block of styrofoam floats on water while a same size block of lead lies submerged in the water The buoyant force is greatest on the?
The block of Styrofoam floats on water while a same size block of lead lies submerged in the water. The buoyant force is greatest on the lead. Compared to an empty ship, the same ship loaded with Styrofoam will float lower in the water.
Does water have greater density than oil?
No, water has more density than oil. If something denser than water(Eg=Iron) is dropped to water, it sinks, while less denser will float. Oil floats on water. Really I've tested it
Why are ships are no sinking while they are in the sea?
if the water the object displaces wieghs more than the object it self then it floats
What floats and does not float?
A pencil floats, a human no float, a feather floats, paper floats, ice floats, keys do not float, rocks do not float, coins do not, flip flops float. Second answer: I think you meant to ask, 'What floats and then some time later starts to sink. If that is what you meant, the answer is: There are absorbent substances which float when dry, then after absorbing water while they are floating, they increase in density and then sink.
