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The rock that sinks has a higher density than the rock that floats. (The only rock that floats is pumice.)
More specifically, for a rock to float it must have a lower density than the fluid it is placed in.
This will mean that a given volume of the material will have a smaller mass (and hence weight) than the fluid it displaces. As such the material will have positive bouyancy and will tend to float on top of the more dense material.
What else can I help you with?
Why doesn't a rock float?
A rock sinks in water because its density is greater than that of water. The weight of the rock is heavier than the water it displaces, causing it to sink rather than float.
What floats and sinks in water?
Objects that are less dense than water will float, while objects that are denser than water will sink. For example, wood, plastic, and cork typically float in water, while metals like lead and iron sink. The shape and size of an object can also affect whether it floats or sinks.
What force other than gravity is pushing on a rock when it sinks?
The "buoyant" force is acting on it, in the vertically upward direction. That force is equal to the weight of the water that would be in the volume of the rock if the rock weren't there.
Do all rocks sink?
It depends on the type of rock. A rock like sandstone would not sink if it is a small peice. Small rocks can float. That's when its called silt.
What is a substance that floats or sinks in another because of its relative?
A substance floats or sinks in another liquid based on its relative density compared to that of the liquid. If the substance has a lower density, it will float, while a substance with a higher density will sink. This principle is exemplified by oil floating on water, as oil is less dense than water. Conversely, a rock sinks because it is denser than the water.
Why does pumice float while a rock of similar size will sink in the same tank of water?
Pumice is porous and filled with gas bubbles, which make it less dense than water and causes it to float. In contrast, a solid rock of similar size is more dense and lacks air pockets, so it sinks in water.
Does Anorthite sink or float in water?
It will float. Its a rock. It actually depends on how much water you have, if you you tried float it in the ocean, it would obviously sink. But if you tried to float it on a gladd or bowl or water, it would float,
What happens when you throw a blue rock in a red stream?
A wet rock.
What rock can actually float where does it come from?
Pumice is the only rock that will float. It is a volcanic rock.
How does a stick float and an rock sinks?
A stick floats because it is less dense than water, so the buoyant force is greater than its weight, causing it to stay on the water's surface. A rock sinks because it is denser than water, so its weight is greater than the buoyant force, causing it to sink to the bottom.
What sound does a rock make when dropped into water?
Since the weight of pumice is less it will float on water for some time and then..
Will shale rock sink or float?
Sink. Taking is from a third generation coal miner's son. The land around here is all shale, slate, coal and tailings. And it all sinks.
