Show:
Misc. 1
Misc. 2
Stellar Evolution
Motion
Galaxies/ Universe
100

The sun is classified as a __________

Main Sequence star

100

What is a circumpolar constellation

A constellation that circles the poles, does not set, seen year round

100
How does a star form from a nebula? Explain in detail.
Gravity pulls the gas and dust together forming a protostar, when the contracting dust becomes dense and not nuclear fusion begins and a star is formed.
100

What is apparent motion

They way something appears to move

100
What is a neutron star? What does it result from
remains of high mass stars from the explosion
200
Name three characteristics to classify stars
color temperature size mass composition brightness
200
What color are the "cooler stars"
reddish
200
What is a protostar?
early stage of life of a star before nuclear fusion begins.
200

Star Destiny is 25 light years away from Earth and Star Kristen is 37 light years away from Earth. Which star would have a greater apparent motion and why?

Star Destiny, because the closer a star is to Earth, the more it appears to move

200
Why do some stars become white dwarfs and others neutron stars or black holes.
depends on the mass of star
300

What is the difference between apparent brightness and absolute brightness.

Apparent: How bright a star appears to be as seen from Earth 

Absolute: The brightness a star would have if it were at a standard distance to Earth

300
What two charactersitics are shown IN An H-R diagram?
Surface temperature of a star and absolute brightness.
300
What factor determines how long a star lives?
mass
300

Do constellations change shape? Explain.

Yes

300
What is a black hole? What does it result from?
intense body of gravity, a supernova exploding star
400

Fill in the blanks In general Hotter stars have a _________ brightness

In general Bigger stars have a __________ brightness

high high

400
What are two ways astronomers can use an H-R diagram for?
To classify stars understand how stars change over time
400
Why do bigger stars live shorter lives than smaller stars?
They burn their fuel faster.
400
What is parallax?
The apparent change in position of an object when viewed from different place.
400
What is a galaxy? Explain 3 types of galaxies
cluster of stars, gas, and dust bound together by gravity Spiral: bulge in center arms spiral outwards, young bright stars on arms with ga and dust, older stars in center-little gas and dust Elliptical: flattened ball of stars, older stars, little gas and dust Irregular: Random pattern, bright young stars, gas and dust
500
What is a light year?
The distance light travels through space in one year.
500
What color are the hottest stars
blue
500
What is a white dwarf and what type of star does it result from?
the blue-white core from a red giant, results from alow mass star.
500

What is retrograde Motion?

The apparent backwards motion of the planets. Happens when the earth orbits the sun. 

500
What is the big bang theory? Explain the evidence that supports it
hot, dense, gas exploded in an instant 1) moving galaxies shows universe is expanding 2) cosmic background radiation: radioactive remains support an explosion occurred.