Density is a ratio of the mass/people/things to volume/area. Given the density and one of the two quantities in the ratio, solve for the other quantity in the ratio.

From a chapter on Fluid Statics in a Physics textbook. This section of the chapter defines density, explains how to use a known density to find the mass of a substance, and compares different densities. Includes examples, questions,...

This is a guided inquiry activity in which learners use simple lab procedures and discussions to develop and apply the concept of density. Students collect and graph data which they use to explore the relationship between mass and...

Practice your density, mass, and volume calculations with these interactive review problems.

It is very common to take data and apply the same transformation to every data point in the set. For example, we may take a set of temperatures taken in degrees fahrenheit and convert them all to degrees celsius. How would this...

From a chapter on Fluid Statics in a Physics textbook. This section of the chapter provides a detailed discussion of Archimedes' principle, buoyant force, floating and sinking, and the role of density. Includes questions, problems and...

From a chapter on Fluid Statics in a Physics textbook. This section of the chapter looks at the relationship of weight, depth, density, and altitude to pressure. Includes questions, problems and exercises.

On many occasions, physicists, other scientists, and engineers need to make approximations or "guesstimates" for a particular quantity. What is the distance to a certain destination? What is the approximate density of a given item? About...