Density and Upthrust Quiz

What is the definition of density?

• Mass per unit area
• Mass per unit volume
• Volume per unit mass
• Weight per unit volume

If an object has a mass of 200 grams and a volume of 50 cm³, what is its density?

• 4 g/cm³
• 2 g/cm³
• 5 g/cm³
• 10 g/cm³

Which of the following statements about upthrust is true?

• It is always equal to the weight of the object
• It is always equal to the weight of the fluid displaced
• It is a downward force
• It only acts on solid objects

According to Archimedes' Principle, what determines the upthrust acting on a submerged object?

• The object's mass
• The object's shape
• The density of the fluid
• The volume of fluid displaced

A steel object with a density of 8050 kg/m³ is submerged in water. What will happen to the object?

• It will float
• It will sink
• It will remain suspended
• It will dissolve

If the density of water is 1000 kg/m³, what is the upthrust on a steel pendulum bob with a volume of 5 cm³ submerged in water?

• 0.005 N
• 0.05 N
• 0.5 N
• 5 N

What is the formula for calculating density?

• Density = Volume × Mass
• Density = Mass / Volume
• Density = Mass + Volume
• Density = Volume / Mass

If an object is less dense than the fluid it is placed in, what will occur?

• It will sink
• It will float
• It will dissolve
• It will compress

How does increasing the temperature of a fluid generally affect its density?

• Density increases
• Density decreases
• Density remains the same
• Density fluctuates

What happens to the upthrust force if the volume of fluid displaced increases?

• It decreases
• It increases
• It remains the same
• It becomes zero