Yes , most of the time
Yes, if all of the objects have the same amount of volume they will displace the same amount of water!
equal to their weight
Fill a cup to the brim with water. Put egg in water (it should sink), capturing all of the overflow of water. Measure volume of water. This volume will match the egg's volume. Sinking objects displace volume, floating objects displace mass.
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.
buoyancyAn object that displaces its own weight in water is said to be "floating".
objectsfloats on water, oil and kero depending on the objects density or the objects weight.
Objects that Float in water are less dense than water. Objects that sink are more dense than water. More clearly stated Objects that sink displace less water than their weight of equal measure.
neither a sponge would
Any number of things will float in fresh water. Any boat that can be used in salt water will also stay afloat in fresh. However, fresh water has a lower specific gravity than salt water, and as a result, objects that displace a certain amount of sea water will displace more fresh water; they will sit lower in fresh water.
Unplace, replace, displace.
The lower an objects density the less likely it is to sink in water. Objects with a higher density than water will sink if placed in it while objects with a lower density than water will float if placed in it.
An object will sink if it weighs more than the water it pushes away, and an object will float if it weighs less than the water it pushes away. The Greek mathematician Archimedes discovered that the amount of water displaced by an object depends on the mass of that object. Mass is the amount of matter in a substance, and dense objects have more mass than less dense objects. Dense objects that do not displace much water will sink, while less dense objects that displace a lot of water will float.