Density STAAR Review

Front

What is density?

Back

Density is the mass of an object divided by its volume. It tells us how much matter is packed into a certain space.

Front

How do you calculate density?

Back

Density = Mass / Volume

Front

What units are used to measure density?

Back

Common units for density include grams per cubic centimeter (g/cm³) and kilograms per cubic meter (kg/m³).

Front

What happens to the density of an object if its mass increases but its volume stays the same?

Back

The density increases because density is directly proportional to mass.

Front

What happens to the density of an object if its volume increases but its mass stays the same?

Back

The density decreases because density is inversely proportional to volume.

Front

If an object has a density less than that of water, will it float or sink?

Back

It will float, because objects with lower density than water are buoyant.

Front

If an object has a density greater than that of water, will it float or sink?

Back

It will sink, because objects with higher density than water are not buoyant.

Front

What is the density of water?

Back

The density of water is approximately 1 g/cm³ at 4°C.

Front

How does temperature affect the density of liquids?

Back

As temperature increases, most liquids expand, which decreases their density.

Front

What is buoyancy?

Back

Buoyancy is the ability of an object to float in a fluid, which is determined by the object's density compared to the fluid's density.