A piece of wood floats on water (true or false)

Yes, the statement is true — wood floats on water because it is less dense than water, no matter how big or small the piece is. If you compare the weight of a block of wood with an equal volume of water, you’ll find that the wood weighs less. This shows that wood has a lower density than water. As a result, the buoyant force acting on wood equals its weight, allowing it to float.

Role of Upthrust (Buoyancy)

• An upthrust force, also known as buoyancy, always acts on objects placed in a fluid.
• If the density of the object is less than the fluid, buoyancy is greater, and the object floats.
• If the object’s density is greater than the fluid, the buoyant force is not enough, and the object sinks.
• In simple terms: positive buoyant force → floats; negative buoyant force → sinks.

Note

• Here, terms like “size” or “amount” are used instead of “volume” for easier understanding.
• Similarly, “weight” and “light/heavy” are used in place of “mass.”

Key difference:

• Weight = measure of how heavy an object is.
• Density = measure of how much matter is packed into a given volume.