What is a star
A star is a ball of?
plasma
stars begin their lives as
clouds of dust
How old is the sun?
4.603
All stars live by fusing
Hydrogen and Helium
magnitude is
bright ness
Nuclear reactions occur in?
stars
the lifespan of stars depends on its
Size
how big is the sun?
432,690
helium fuses with carbon to make
oxygen
apparent magnitude it how ______ a star appears from earth
bright
Nuclear reaction is released as.
Electromagnetic radiation
stars live for about
10 billion years
How hot is the sun?
5,778
The formation of elements in stars occurs in
massive stars
True or false luminosity is how bright a star actually is.
True
what is a star?
huge celestial bodies that are made up of hydrogen and helium.
a stars main sequence may only last a few
hundred thousand years
how far is the sun from earth?
92.275
carbon and oxygen fuse together to make
silicon
stars give off their own
Light
The _________ continues to condense
protostar
the sun gives off its own
Light
____ silicon atoms fuse to make iron
Two