Life Cycle
What is the first stage of stars?
Stars start out as a nebula
The lower the number for luminosity, the ____ it is
brighter
What type of star is the Sun?
The Sun is a main sequence star
What does AU stand for?
Astronomical Unit
What does a star turn into after a supernova?
Black hole
Cooler stars are ____ in color
red
Are white dwarfs or red dwarfs hotter?
White dwarfs
What is the temperature of stars measured in?
Kelvin
Describe a white dwarf
Very small in size, hot, dim, and towards the second half of the life cycle
What is the difference between absolute and apparent magnitude?
Absolute magnitude is how bright the object is from a set distance, and apparent magnitude is how bright an object is from Earth.
What is the brightest star in the sky?
The Sun
What are minutes and seconds used to measure in terms of stars?
They are used to measure diameter
Why do black holes not cause a lot of destruction if their gravity is so strong?
They tend to be very small.
What stars have high luminosity and are hot?
Blue Giants
What type of stars are in the bottom left of the HR Diagram?
White dwarfs
What are light years?
The distance light travels in one earth year
In comparison to the Sun, how dense is Betelgeuse?
What is the Absolute magnitude of the Sun?
+4.7
What type of stars are in the bottom right of the HR diagram?
Red dwarfs
How much is an AU?
150,000,000 Km