Week 9: Sun and Fusion

Every element has what?

What is an element with a fixed number of protons but a variable number of neutrons?

An element made out of only what can not exist for long becuase there is insufficient strong nuclear force to hold it together?

What provides strong nuclear force without add any addition electro-magnetic repulsion?s

Nitrogen-13 has how many protons, neutrons and nucleons?

The process of nitrogen-13 being radiactive and producing carbon-13 by electron capture to convert one proton into a neutron is called what?

The process of fission produces what?

What takes heavy elements and converts them to lighter elements?

What are chargless, massless particles that carry energy away from fission reactions?

The process of carbon-12 slamming together with a proton producing nitrogen-13 plus energy in the form of gamma rays is called what?

The building of heavy elements from lighter ones is called:

The Sun cannot be a burning ball of coal because if it was, it could only burn for how many years?