A metal boat, on its own metal would sink but in the form of a boat-with the overall mass spread out and pockets of air making up most of the interiors- will not sink.
It isn't really a question of density it is a question of construction.
Because the object's weight pushes down on the water itself.That's why if you put in a large object inside,the water pushes itself out.
because some objects are much denser(heavier) than water so they sink
Objects float because the air in the object causes it to rise because it is less denser than water. Objects float better in salt water because the salt makes the water more denser helping even heavier objects to float. -Kimberly P.S. I learned all this in 4th grade!!!!!!!!!!!
No. Molten rock is heavier than water.
Objects that float in water have a lower density than water. -anonymous18_K
Objects that float in water are less dense than water; while objects that sink in water are more dense than water.
Iron doesn't float. To float it has to be lighter than water. It is heavier.
objects that are less dense float to the top.
An object will float on water if it has less density than water.
objects with higher density than water sink, ones with a lower density float
Any object that is less dense than water will float.
Objects which are less dense than water will float. Objects denser than water will float or sink depending on the volume of water that they displace and that will depend on their shape.
A bottle, though heavier than water, can be made to float by trapping air inside of it. This same bottle can be made to sink by filling it with water, or a substance heavier than water. It can again float by emptying it and trapping air in it.