Sink or Float

What is density?

• Density is the mass of an object divided by its volume.

• Density is the weight of an object multiplied by its volume.

• Density is the volume of an object divided by its mass.

• Density is the mass of an object plus its volume.

What does it mean for an object to float?

• An object floats when it is less dense than the fluid it is in, meaning it weighs less than the water it displaces.

• An object floats when it is heavier than the fluid it is in, meaning it sinks to the bottom.

• An object floats when it is equal in density to the fluid it is in, meaning it remains suspended.

• An object floats when it is made of a material that is not soluble in the fluid.

What is a common misconception about floating and sinking?

• Only heavy objects sink; lighter objects float.

• All objects sink if they are heavy enough.

• Only objects made of metal sink.

• It depends on density, not just weight.

What is an example of an object that floats?

• A rubber duck

• A rock

• A metal ball

• A piece of wood

What is the principle of Archimedes?

• An object submerged in a fluid experiences a downward force equal to the weight of the fluid displaced.

• An object submerged in a fluid experiences an upward buoyant force equal to the weight of the fluid displaced.

• An object submerged in a fluid will float if it is less dense than the fluid.

• An object submerged in a fluid will sink if it is more dense than the fluid.

How can you tell if an object will float or sink?

• By comparing its weight to the weight of the fluid.

• By comparing its density to the density of the fluid.

• By measuring its volume and surface area.

• By observing its color and texture.

What is the relationship between weight and buoyancy?

• An object will float if its weight is less than the buoyant force acting on it; it will sink if its weight is greater.

• Buoyancy is always greater than weight, causing all objects to float.

• Weight and buoyancy are unrelated forces that do not affect each other.

• An object will float if it is heavier than the water it displaces.

What happens to a plastic bottle filled with water in water?

• It will float because it is less dense than water.

• It will sink because it is denser than water.

• It will remain suspended in the middle of the water.

• It will dissolve in the water.

What is an example of an object that sinks?

• A feather

• A rock

• A piece of wood

• A plastic bottle

What is displacement?

• Displacement is the amount of fluid that is pushed away by an object when it is placed in the fluid.

• Displacement is the distance an object travels in a straight line.

• Displacement is the total volume of an object regardless of its shape.

• Displacement is the change in position of an object over time.