2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt H-R diagramLife cycleStar chartsEMSBig Bang FJ
What is the coolest star color ?
Red
Which is brighter a star with a magnitude of 6 or -6
-6
Color of the largest main sequence stars
blue
Color of the sun
yellow
Higher absolute magnitude (luminosity) stars are bigger than low absolute magnitude (luminosity) stars.
true
A star forms when ____ starts in its core
fusion
Our sun will end up as a
White dwarf
The formula of fusion is
H + H ->He + stuff
The force that draws the stellar dust together
gravity
The factor that determines the life of a star
Size of the nebula
When the spectral lines are red shifted the star is moving ___
away
90% of the visible universe is ___
hydrogen
Who was the 1st to see the galaxies red shifted
Edwin Hubble
The big bang is believed to have occurred approximately 12 ____ years ago
billion
Red shift and blue shift is based on what phenomenon
Doppler Effect
Which part of the EMS has the greatest energy
Gamma rays
A rainbow of colors is produced when white light passes through a prism because the light ___ varying amounts based on wavelength
refracts
List visible light from the longest to shortest wavelength
ROYGBIV
The speed of light is
186,000 miles/second
Light year is a unit of
distance
Stars that can be seen only during certain times of the year
seasonal
On a star chart, how are the stars written
upper and lower case
The outside edge of a star chart represents the ____
horizon
Does Polaris change its position throughout the year
no
If Polaris is 43˚ above the horizon, you would be ____ north of the equator.
43˚
Do we see the past, present or future ? TIME past