The Basics of Rocket Science

We discuss the basics of rocket science. What is the difference between a rocket and a jet? What is the rocket equation? What is delta-v? Was Wall-e actually saying delta-v? What is rocket fuel? What is rapid unscheduled disassembly? What is a specific impulse? What are stages of a rocket for? Why does it look like rockets aren't going straight up? Why are rockets clamped to the launch pad?