Understanding Density and Specific Gravity

What is the primary focus of the video?

• The difference between density and specific gravity

• The difference between volume and area

• The difference between mass and weight

• The difference between speed and velocity

What is specific gravity?

• The weight of a substance compared to water

• The ratio of the density of a substance to a reference substance

• The mass of a substance compared to its volume

• The volume of a substance compared to air

What is the official SI unit for density?

• Kilograms per meter cubed

• Liters per kilogram

• Grams per cubic centimeter

• Pounds per square inch

How is specific gravity calculated using water as a reference?

• By adding the density of the substance to the density of water

• By multiplying the volume of the substance by the volume of water

• By dividing the density of the substance by the density of water

• By dividing the mass of the substance by the mass of water

What happens if the specific gravity of a substance is greater than 1?

• The substance will float

• The substance will sink

• The substance will dissolve

• The substance will evaporate

What percentage of an iceberg is typically underwater?

• 50%

• 70%

• 90%

• 100%

What is the density of ice compared to water?

• Ice density varies with temperature

• Ice is denser than water

• Ice has the same density as water

• Ice is less dense than water

How does glycerol's density affect the specific gravity of pine?

• Pine floats lower in glycerol than in water

• Pine floats higher in glycerol than in water

• Pine dissolves in glycerol

• Pine sinks completely in glycerol

What is the density of glycerol used in the video?

• 1260 kg/m³

• 2500 kg/m³

• 940 kg/m³

• 1000 kg/m³

What happens to glass in glycerol?

• Glass sinks to the bottom

• Glass floats on the surface

• Glass dissolves in glycerol

• Glass is suspended in the middle