Energy From The Nucleus Flashcards
0
Q
Nuclear fusion
A
Process of forcing two nuclei close enough together so they form a single larger nucleus
1
Q
Nucleus fission
A
Splitting of an atomic nucleus
2
Q
By what process is energy released in stars
A
Nuclear fusion
3
Q
What is the major source of background radiation
A
Radon gas
4
Q
Galaxy
A
Collection of billions of stars held together by their own gravity
5
Q
What happened to the temp of universe as it expanded
A
Temp fell decreased
6
Q
In the universe there are
A
Billions of galaxies
7
Q
Stages of a star
A
Protostar -> main sequence star -> if high mass turns into red supergiant then neutron star or black hole, if low mass -> red giant turns into white dwarf then black dwarf
8
Q
Chemical elements are formed by
A
Fusion process in stars
