Stars
HR Diagram
The Universe
Galaxies
Comparing Stars
100
Where are stars formed?
Nebula
100
How does the HR diagram classify stars?
By brightness + temperature
100
What is the speed of light?
300,000 km/s
100
What are the three type of galaxies?
Spiral, Irregular, Elliptical
100
Which is brighter: Barnards Star or Deneb?
Deneb
200
What is a star?
a burning ball of gas made of hydrogen & helium
200
What are the characteristics of stars located on the bottom and right?
They are dim and cold
200
What is a light year?
The distance light travels in a year.
200
What is the name of our galaxy?
Milky Way
200
Which is hotter, Betelgeuse or Sirius B
Betelgeuse
300
What is the closest star to us?
The Sun
300
What color are the coldest stars?
Blue
300
What is the evidence that our universe is still expanding?
Red Shift
300
What does an elliptical galaxy look like?
A flattened football, or egg.
300
Which is colder, the Sun or Mira?
Mira
400
What happens to the most massive of stars when they die?
They form a black hole
400
What does the HR Diagram not measure/tell you about a star? (List at least two)
Size, location, age, constellation
400
How do we measure distances in space?
Light Year
400
What does an irregular galaxy look like?
It does not have a fixed shape
400
What group of stars are the dimmest?
The White Dwarfs
500
What are the characteristics of our sun? (Name at least two!)
It is a main sequence, yellow star of medium temperature, and medium brightness.
500
Where would a star that is bright but cold be located on the HR Diagram?
The top right
500
What is the big bang theory?
The theory that all matter and energy started in one point and exploded outwards.
500
What type of galaxies have a central bulge?
Elliptical & Spiral
500
Complete this sentence: As main sequence stars get ________ they get _________.
hotter/brighter
M
e
n
u