Shared Flashcard Set

Details

ch. 15
ch. 15
11
Science
8th Grade
06/03/2009

Additional Science Flashcards

 


 

Cards

Term
spectrum
Definition
a rainbow of colors seen when u look at a white light through a glass prism
Term
apparent magnitude
Definition
the brightness of a star seen from earth
Term
absolute magnitude
Definition
the brightness that a star would have ar a distance of 32.6 light yers from earth
Term
light year
Definition
the distance that light travels in one yr; 9.46 trillion killometers
Term
parallax
Definition
ab apparent shift in the position of an object when viewed from diff. locations
Term
main sequence
Definition
the location on the h-r diagram where most stars lie
Term
h-r diagram
Definition
a graph that shows relation between a stars surace temp and absoulte magnitude
Term
galaxy
Definition
a collection of stars, dust, and gas bound together by gravity
Term
nebulas
Definition
a large cloud of gas and dust in intersteller space a region in space where srars are born
Term
big bang theory
Definition
te theory that all matter and energy in the universe was compressed into an extremely small vol. that 13 billion yrs ago exploded and began expanding in all directions
Term
supernova
Definition
a gigantic explosion in which a massive star collapses and throws its outer layers into space
Supporting users have an ad free experience!