Stars
more Stars
HR Diagram
the Sun
Galaxies
123
This star is the next stage of a small to medium main sequence star.
Red Giant
123
The beginning of every star is a giant cloud of space dust and gases called what?
A nebula
123
Which color will the colder stars be?
Red
123
What stage of its "life cycle" is our sun in?
Main Sequence
123
Which galaxy is our sun, earth and solar system located in?
BONUS FOR DOUBLE
What type of galaxy is the Milky Way?
Milky Way
BONUS
Spiral
234
This type of star is the stage before a Black Dwarf.
White Dwarf
234
What about a star will determine if it has a short or long life cycle?
BONUS FOR DOUBLE POINTS (all or nothing)
Which stars will have a longer life cycle?
Its mass
BONUS
Small to medium stars will "live" longer
Large stars fuse hydrogen at a faster rate
234
What color, size and temperature are White Dwarfs?
White, small and hot
234
What size is our sun compared to other stars in our galaxy?
Medium or Average
234
Name the types of galaxies shown below.
1. 
2. 
3. 
1. Spiral
2. Irregular
3. Elliptical
345
This star will explode as a super nova.
Red Super Giant
345
What spectral class is our sun?
G
345
Which star is has a temperature of about 12,000 K and is very bright?
BONUS FOR DOUBLE POINTS
What is that star's color and size?
Rigel
BONUS
White and large or very large
345
How does the sun's brightness, temperature and size compare to other stars in our galaxy?
It is medium/average brightness, temp & size
345
Which type of galaxy looks flat when viewed from the side?
Spiral
456
If a main sequence star is average/medium sized, what will its luminosity (brightness) and temperature be?
average/medium
for Main Sequence Stars:
Temperature = brightness = size
456
Every star will go through these 3 stages at the beginning of its life cycle.
Nebula --> Protostar --> Main Sequence Star
456
What is the approximate (use numbers) temperature and luminosity of our sun?
About 6000 K and a luminosity of 1
456
If you were to travel at light speed, how long would it take to get to our sun?
BONUS FOR DOUBLE POINTS (all or nothing)
How long would it take to get to the next closest star to earth traveling at light speed?
about 8.5 minutes
BONUS
over 4 years
456
Our sun is located on a spiral arm about half way between the center and outer edge of our galaxy. Which point represents where our solar system is located within the milky way galaxy?
B
578
During the life cycle of a large star a stellar nebula is created because of what stage?
BONUS FOR DOUBLE POINTS (all or nothing)
During the life cycle of a small to medium star a planetary nebula is created because of what stage?
Supernova spreads dust and gas to create a stellar nebula
BONUS
A red giant will pulse and expel its outer layers (gas and dust) to create a planetary nebula
578
What color will a super large main sequence star be?
Blue or white
for Main sequence stars:
size = temperature = brightness
(very large will be very hot)
578
What is the general temperature and luminosity (brightness) of each quadrant of the HR diagram?
A: Hot & Bright B: Cool & Bright
C: Hot & Dim D: Cool & Dim
578
What stages are next for our sun in its life cycle?
Red Giant --> Planetary Nebula & White Dwarf --> Black Dwarf
578
List 3 facts about the milky way galaxy.
1. It contains our solar system
2. It is about 100,000 light years in diameter
3. It has a black hole at its center
4. It is a spiral
5. It is disc/pinwheel shaped
6. It has 4 arms
7. It contains 200 billion to 400 billion stars