Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/24

Click to flip

24 Cards in this Set

  • Front
  • Back
stage stars spend most of their life
MAIN SEQUENCE
the balance between the outward press of heat and inward push of gravity
HYDROSTATIC EQUILIBRIUM
leads to stability in main sequence
HYDROSTATIC EQUILIBRIUM
what causes a star to move out of main sequence
RUNS OUT OF HYDROGEN IN CORE
requirement to do helium fusion
EVEN HOTTER TEMPERATURES
fusion patterns post-main sequence
HYDROGEN BURNING IN SHELL
what happens to temperature as a star first leaves main sequence
DROPS SLIGHTLY
what happens to luminosity as a star first leaves main sequence
INCREASES
two reasons why luminosity may increases
INCREASE TEMPERATURE OR SIZE
stage indicated by substantial increase in size and luminosity, but cool in temperature
RED GIANT
fusion patterns near the end of red giant stage
HELIUM FUSION
2 He fust to yield...
Be (BERYLLIUM)
Be + He fuse to yield...
C (CARBON)
another name for He-4 nuclei
ALPHA PARTICLES
a rapid rise in temperature as nuclear reactions are temporarily out of control in core
HELIUM FLASH
result of the helium flash
REDUCTION IN ENERGY OUTPUT, CORE COOLS, SLIGHT DECREASE IN LUMINOSITY
what is required for oxygen to be formed in the core?
C + He and EXTREME COMPRESSION
primary component of central core of a planetary nebula
CARBON
ionizing radiation from hot star embedded in cool gas
PLANETARY NEBULA
fate of a low mass star
BLACK DWARF
dying stage of a low mass star, small with high temperature
WHITE DWARF
cold, dense, dead star
BLACK DWARF
star that never undergoes nuclear fusion
BROWN DWARF
mass of a brown dwarf
0.08 SOLAR MASS