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

Which of the following best describes upthrust?

• A downward force on an object
• An upward force experienced by a submerged object
• A force that acts only in air
• A force that increases with depth

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

• 5 kg/m³
• 20 kg/m³
• 10 kg/m³
• 15 kg/m³

What happens to the upthrust force as the depth of the fluid increases?

• It decreases
• It remains constant
• It increases
• It becomes negligible

Which of the following factors does NOT affect the density of a substance?

• Temperature
• Pressure
• Mass
• Volume

An object is submerged in water and experiences an upthrust. What can be inferred about the object's weight?

• It is greater than the upthrust
• It is equal to the upthrust
• It is less than the upthrust
• It has no relation to the upthrust

How does the density of a substance generally change with an increase in temperature?

• It increases
• It decreases
• It remains the same
• It fluctuates randomly

If two objects have the same volume but different masses, what can be concluded about their densities?

• They have the same density
• The object with greater mass has a higher density
• The object with lesser mass has a higher density
• Density cannot be determined

Which of the following statements about buoyant force is true?

• It acts only on solid objects
• It is always equal to the weight of the fluid displaced
• It decreases with the size of the object
• It is independent of the fluid's density

What is the primary reason for the upthrust experienced by an object in a fluid?

• Gravity pulling down
• Pressure differences on the object's surfaces
• The object's shape
• The object's temperature