Understanding Density and Buoyancy

What is density defined as?

• Density is mass per unit volume.

• Density is the weight of an object.

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

• Density is the total mass of a substance.

Why does cork float in water?

• Cork sinks in water because it is heavier than water.

• Cork floats because it is made of plastic.

• Cork floats in water due to its high moisture content.

• Cork floats in water because it is less dense than water.

What is the density of cork compared to water?

• Cork is more buoyant than water.

• Cork is less dense than water.

• Cork has the same density as water.

• Cork is denser than water.

What happens to an object with a density less than water?

• The object will float.

• The object will sink.

• The object will dissolve in water.

• The object will evaporate.

Why does an iron nail sink in water?

• An iron nail sinks due to its shape being flat.

• An iron nail floats because it is made of plastic.

• An iron nail sinks because it is lighter than water.

• An iron nail sinks in water because its density is greater than that of water.

What is the relationship between density and buoyancy?

• Buoyancy increases with the density of the object.

• Buoyancy is influenced by the density of the object and the fluid; an object floats if its density is less than that of the fluid.

• Density has no effect on whether an object will float or sink.

• An object sinks if its density is equal to that of the fluid.

How does the upthrust of water affect floating objects?

• Upthrust allows objects to float by counteracting their weight.

• Upthrust causes objects to sink in water.

• Upthrust increases the weight of floating objects.

• Upthrust has no effect on the buoyancy of objects.

What can be inferred about an object that floats?

• The object is heavier than the fluid.

• The object is made of metal.

• The object is always solid.

• The object is less dense than the fluid.

What can be inferred about an object that sinks?

• The object has a density greater than the fluid.

• The object is made of a lightweight material.

• The object is filled with air.

• The object has a density less than the fluid.

How does the density of a substance determine its behavior in a liquid?

• The density of a substance determines its buoyancy in a liquid, affecting whether it floats or sinks.

• Density affects the color of a substance in a liquid.

• Density influences the taste of a substance in a liquid.

• Density determines the temperature of a liquid.