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Int Sci 1.1 - Unit 3 - Characteristics of Stars
Transcript of Int Sci 1.1 - Unit 3 - Characteristics of Stars
color reveals temperature
hottest stars (20,000 deg C) are blue
coolest stars (3,200 deg C) are red
most stars are size of our sun
large stars are giants or supergiants
white dwarfs are about size of Earth
neutron stars 20km in diameter
are approximately 73%
and 2% other elements
a device that breaks light into colors and produces an image of the resulting spectrum
Characteristics of Stars
Int Sci 1.1 - Unit 3
Line Emission Spectra
Depends on size and temp
brightness as seen from Earth
the brightness if placed at standard distance from Earth
Apparent change in position of an object when you look at it from different places
Used to measure distance of stars
Space and everything in it
distance that light travels in one year
9.46 trillion kilometers
light travels at 300,000,000 m/s