Star Cycle
Where all stars come from (start as)
Nebula
Most stars in the universe are in what stage?
Main Sequence
What is the name of the diagram astronomers use to compare stars
What is the name of Earth's Galaxy
Milky Way
On which side of the x-axis is the highest temperature
Left hand side
A sphere of matter with density and temperature great enough to cause a nuclear reaction (fusion)
A star
Which life stage creates a gravity pull so strong that it traps light
Black Hole
DAILY DOUBLE: What two elements form a star?
Hydrogen and Helium
What is the shape of Earth's Galaxy
Which stars are on the top right of the HR Diagram?
Giants and/or Supergiants
What would be the color of stars with the highest surface temperature?
Blue
A star ages as the process in which it creates fuel decreases (the chemical reaction that makes it shine)
Nuclear Fusion
The location of the sun in the HR Diagram
Middle of Main sequence
What are the three shapes of a galaxy
Spiral, Irregular and Elliptical
DAILY DOUBLE: What is the term for brightness in the HR Diagram?
Luminosity
Event in which an aging star collapses inward creating a major explosion as bright as the entire galaxy
Supernova
Which physical feature determines what type of life cycle a star will have?
Mass
What are the four life stages seen in a H-R Diagram?
Main Sequence, Red Giant, Supergiant and White Dwarf
What theory states that the universe came from an explosion
The Big Bang
Which type of stars are the brightest and less hot on the HR Diagram?
Supergiants
DAILY DOUBLE: What are the next four life stages of the sun?
A star's color is related to which physical feature
Its surface temperature (red = hot, blue = hotter)
What is the name of a letter-based classification system to organize stars based on temperature?
Spectral Class
What is a common unit to measure distance between and within galaxies (Hint: It goes really fast)
Light-years
Which stars are on the hottest in the the HR Diagram?
Blue stars on the top left of the main sequence