A Closer Look at Light
Light is a form of _________________________, which is energy that travels in waves
electromagnetic radiation
A group of stars that form a pattern or shape
Constellation
The graph that puts stars into distinct groups based on brightness and temperature
HR Diagram
Systems containing billions of stars, planets, dust, and gases
Galaxies
The theory on the origin of the universe
Big Bang Theory
The type of EM wave that has the longest wavelength
Radio waves
The difference between apparent and absolute magnitude
Apparent - brightness from earth, Absolute - brightness with all stars at a common distance.
The stage a star is in for most of its life
Main Sequence
the three types of galaxies
spiral, elliptical, irregular
The first stage of a star's life
Nebula
The device used to separate visible light into its component colors
Spectroscope
An AU is the distance between...
Earth and Sun
The factor/variable that determines how long a star lives and how it will die
Mass
the name of our galaxy and its type
Milky way, spiral
The name of the measure of distance that uses parallax for its basis
Parsec
The type of spectrum that helps determine the elements in the outer layer of a star
Absorption spectrum
The spectral classes of stars, in order from hottest to coolest
O B A F G K M
Describe the path of a star about the mass of our Sun after it leaves main sequence
Red giant stage - starts fusing helium to carbon, cools down and expands
White dwarf - loses its outer atmosphere and slowly cools as a glowing core. hot but not bright
the type of galaxy that contains old stars
elliptical
How Andreas is going to do on this test
Fail
Wavelengths shorten, light shifted toward blue end of spectrum and sound becomes higher pitched.
The colors for each spectral class
O - blue
B - blue-white
A - white
F - yellow-white
G - Yellow
K - orange
M - red
Describe the death of a massive star
red giant/supergiant
supernova
neutron star or black hole
Redshifting or Cosmic Background Radiation
If observers from earth did not have earth's atmosphere between them and sun, the type of spectrum the Sun would have
continuous spectrum