Chapter 12 Flashcards
What is Work?
The application of force through a distance.
What is Energy?
The capacity to do work.
What is Power?
The rate of flow of energy, or the rate at which work is done.
What is a BTU?
British thermal unit, the energy required to heat one 1 lb of water 1 degree (faranheit).
What is a joule?
the ammount of work done by a force needed to accelerate 1 kilogram 1 meter per second. Another definition i sthe force of an electrical current of 1 amp/second through a resistance of 1 ohm.
What percentage of the world’s energy comes from coal?
26%
What percent of the world’s energy comes from oil?
37%
What percent of the world’s energy comes from gas?
24%
What percentage of the US’s energy supply is produced by Nuclear Power?
7%
Name 2 things that have made Nuclear power less attractive and popular?
Construction costs, safety concerns, nuclear waste, terrorist threats.
In a nuclear reactor, what do the control rods absorb?
Neutrons, this is to control reaction rate.
What is used to remove excess heat in a nuclear reactor?
Water or other cooling fluid, possibly saline solution.
U235 is a
Radioactive isotope of uraniam U238
What takes place in the core of a nuclear reactor?
Nuclear fission.
70% of the world’s Nuclear power plants are…
PWR’s, or Pressurized Water Reactors.
