Understanding Density and Archimedes' Principle

What is the formula for density?

• Density = Mass / Volume

• Density = Mass + Volume

• Density = Volume / Mass

• Density = Mass x Volume

How does Archimedes' principle relate to buoyancy?

• Buoyancy is determined by the density of the object alone.

• Archimedes' principle states that heavier objects sink regardless of fluid displacement.

• The buoyant force is always greater than the weight of the object.

• Archimedes' principle explains buoyancy by stating that the buoyant force on an object is equal to the weight of the fluid it displaces.

If an object has a mass of 10 kg and a volume of 2 m³, what is its density?

• 20 kg/m³

• 5 kg/m³

• 10 kg/m³

• 2 kg/m³

What happens to the density of an object when it is submerged in water?

• The density of the object increases when submerged in water.

• The density of the object becomes equal to the density of water when submerged.

• The density of the object remains the same when submerged in water.

• The density of the object decreases when submerged in water.

Explain how Archimedes' principle can be used to determine the volume of an irregular object.

• The volume is equal to the mass of the object divided by its density.

• The volume is calculated by measuring the object's dimensions directly.

• The volume can be found by weighing the object in air.

• The volume of the irregular object is equal to the volume of water displaced when it is submerged.

What is the density of water in kg/m³?

• 1500 kg/m³

• 500 kg/m³

• 2000 kg/m³

• 1000 kg/m³

How does temperature affect the density of liquids?

• Higher temperatures increase density of liquids.

• Temperature inversely affects the density of liquids; higher temperatures decrease density, while lower temperatures increase density.

• Temperature has no effect on the density of liquids.

• Lower temperatures decrease density of liquids.

If an object is less dense than water, will it float or sink?

• It will dissolve in water.

• It will remain suspended in water.

• It will float.

• It will sink.

What is the significance of the buoyant force in Archimedes' principle?

• The buoyant force is irrelevant in gases.

• The buoyant force is significant as it determines whether an object will float or sink in a fluid.

• The buoyant force is the same as gravitational force.

• The buoyant force only affects objects submerged completely.

Describe a real-world application of Archimedes' principle.

• The calculation of the area of a circle.

• The design of ships and submarines.

• The study of planetary motion.

• The principles of thermodynamics.