Stars
Star Life Cycles
The Sun
Various
The Universe
100
The property of stars that scientists use to determine the temperature of a star.
What is color?
100

How long do stars like our sun live for?

About 10 billion years

100
What kind of star is the sun?
Medium sized, main sequence. 
100

Which color stars are coldest?

Red

100

Why are really big stars rare to find?

They live very short lives. 

200
The method used to measure the distance of stars close to Earth by viewing the star from Earth's location at one time during the year and then six months later.
What is parallax?
200
This stage occurs when the core of a star has fused all of its hydrogen into helium.
What is a giant?
200

When will the Sun die?

About 5 Billion years

200

What color stars are hottest?

Purple

200

Why are red dwarfs the most common?

They live very long lives?

300
The most common elements in which stars are composed of.
What are hydrogen and helium?
300
The one factor that determines the outcome of a star's life cycle.
What is starting mass?
300

Will our sun form a Black Hole?

No; not big enough

300

How are elements heavier than Helium created?

Nuclear fusion in the core of stars.

300

When big stars die, but are not big enough to form black holes, what do they form?

Neutron Stars

400

This is determined by the size and temperature of a star.

What is Brightness.

400
The joining of two nuclei of hydrogen atoms to form helium with extreme amounts of energy being released.
What is nuclear fusion?
400

What will our sun turn into when it dies?

A red giant

400

What is a Black Hole?

A result of giant stars dying and Gravity is the most extreme in the Universe; not even light can escape.

400
An explanation that states all matter and energy exploded from one point and has been expanding apart ever since.
What is the big bang theory?
500
The unit used to measure the distance between stars.
What is a light year?
500

How long do red dwarfs live for?

Trillions of years; unknown because there has not been enough time.

500

What is the surface temperature of our sun?

About 5000K

500

What is the closest star to our sun? How far away is it?

Proxima Centauri; 4.3 light years

500
Evidence that supports the big bang theory.
What is the red shift of all stars and galaxies in our universe?
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