Density

Density is defined as

• a.mass/volume.
• b.volume * mass.
• c.volume + mass.
• d.volume - mass.

What is the density of a substance that has a mass of 55.4 g and a volume of 10 cm3?

• a.0.554 g/cm³
• b.5 kg/l
• c.5.54 g/cm³
• d.554 g/cm³

An object will float in a liquid if it is

• a.cooled to the same temperature.
• b.heated to the same temperature.
• c.less dense than the liquid.
• d.more dense than the liquid.

What is the density of water?

• a.0.11g/cm³ 
• b.0.1g/cm³
• c.1.0g/cm³
• d.2g/cm³

Density measurements and weight measurements are, essentially, the same thing.

• a.true
• b.false

How are density and buoyancy related?

• a.Buoyancy affects the density of an object.
• b.Buoyancy is not affected by density.
• c.Objects that are denser than the material that surrounds them will be buoyant.
• d.Objects that are less dense that the material that surrounds them will be buoyant.

A submarine is able to move throughout the water column by

• a.altering its density.
• b.altering its mass.
• c.altering its volume.
• d.altering its weight.

When two materials that have different densities, like oil and water, encounter one another, they will

• a.exchange densities.
• b.mix uniformly.
• c.repel one another.
• d.separate according to their densities.