Part 2: Review of Density

What is the definition of density?

• The speed per unit time of a substance

• The force per unit area of a substance

• The volume per unit mass of a substance

• The mass per unit volume of a substance

What is the SI unit for density?

• grams per liter (g/L)

• kilograms per liter (kg/L)

• kilograms per cubic meter (kg/m³)

• grams per cubic centimeter (g/cm³)

How does density change as mass increases, assuming volume remains constant?

• It remains the same

• It fluctuates up and down

• It increases

• It decreases

At what temperature is the density of water often used as a reference point?

• 4°C

• 25°C

• 0°C

• 10°C

What is the importance of density in understanding the buoyant force?

• It has no relation to buoyancy

• It changes the temperature of the fluid

• It determines whether an object floats or sinks

• It affects the color of the fluid

 Which of the following industries are density measurements widely used? Mark all that apply.

• metallurgy

• agriculture

• food production

• shipbuilding

What does density help characterize and distinguish?

• Shape

• Color

• Material composition

• Temperature

What variables are found in the density formula?

• Temperature

• Pressure

• Mass

• Volume

What is the density of water at standard conditions?

• 1.5 g/cm³

• 1 g/cm³

• 0.5 g/cm³

• 2 g/cm³

What happens to the density of an object if its volume increases but its mass remains constant?

• It remains the same

• It increases

• It decreases

• It fluctuates up and down