Learn how to use the density number like a conversion factor, to solve for mass or volume. Watch this video after the density introduction or before the more complicated video on density exercises that has unit conversion. [8:55]

In order to understand how we study the universe, we need to talk a little bit about light. Light is a form of energy. Its wavelength tells us its energy and color. Spectroscopy allows us to analyze those colors and determine an object's...

Learn how various physical properties of matter may affect processes with which the matter interacts.

In this video episode of Crash Course Physics, Shini is very excited to start talking about Fluids. You see, she's a Fluid Dynamicist and Mechanical Engineer, so fluids are really important to her. Actually, they're really important to...

A guided screencast which demonstrates how to calculate density to the correct number of significant figures. [2:06]

A series of short videos and a presentation illustrate the concept of density and its formula. Follow several real world example problems to help with understanding the concept. [7:31]

A tutorial screencast which illustrates how to compare an observed, calculated density to the actual density reported in reference sources. [4:27]

The technology that keeps huge cargo ships afloat is amazingly simple. PJ, a masters student in Naval Construction and Engineering at MIT, explains just how simple it really is. [3:04]

Watch kids use the scientific method to figure out why hot air can lift things. Discover how a hot air balloon works.

A video showing that density determines whether an object sinks or floats. Density is the measure of mass divided by volume. [1:28]

This video segment adapted from ZOOM offers a clever demonstration of buoyancy by showing how to pour a cup of air into a cup filled with water. [1 mim, 42 sec]