Two Types of Reactors in the US
http://www.nrc.gov/reading-rm/basic-ref/students/reactors.html

Nuclear Regulatory Committee


This site from the NRC provides animations of how the two types of nuclear reactors used in the US, the pressurized water reactor and the boiling water reactor, function.

This resource is referenced here:
Subject: Environmental Science:Energy:Nuclear Energy
Resource Type: Audio/Visual:Animations/Video