Earnings: Amgen, Inc., United States Steel Corporation, Western Digital, More (AMGN, X, WDC, More) January 27, 2015. After the bell on Tuesday, a number of big name, dividend paying companies announced their quarterly earnings. Below, we look at these earnings reports and break down the important points for investors.
As temperature increases, the density of liquids and gases decreases; as temperature decreases, the density increases. Density is the amount of mass per unit of volume.
Air pressure is influenced by temperature because, as the air is warmed, the molecules start moving around more, so they bump into each other more often and create more pressure. But, air pressure also affects temperature - the more those molecules bump into each other, the more heat they generate.