27 And 29 Flashcards
Star
A body of gases that gives off tremendous amounts of radiant energy
Spectrometer
A decide that separates light into different colors or wavelengths
Spectrum
The display of lights and colors that a spectrometer emits
What is the sun’s size
Medium size
Star life cycle
Nebula, protostar, main sequence, red giant, supernova, and planetary nebula
Dark line spectra
Used to reveal certain characteristics of stars such as composition and temp
Blue stars are normally _____ c°
35,000-50,000
Red stars are normal _____c°
3000c°
Yellow stars
5,500c°
Actual motion
The way a star actually moves
Apparent Motion
How much a star visible moves to eyes on earth, due to the movement of the earth.
Most stars are moving
Westward or around Polaris
Circumpolar stars
Stars rotating around polaris
Parallax
To determine the distance between stars and earth
Nebula
Gas cloud