Show:
Big Bang
Stars
H-R diagram
Galaxy
Misc
100
The point where the big bang began
What is singularity
100
State the definition of a star
What is a hot ball of gas with nuclear reactions
100
Temperature on an H-R diagram tells us a stars this
What is color
100
the name of our galaxy
What is milky way
100
most stars belong to this category on an H-R diagram
What is main sequence
200
The universe was formed this many years ago
What is 13.7 billion
200
Where a star is born
What is nebula
200
brightness on an H-R diagram tells us this
What is size
200
Is a huge group of single stars, star systems, star clusters, dust and gas bound together by gravity
What is a galaxy
200
These three things help to classify a star
What is age, color, and brightness
300
State Hubble's law
What is the farther the galaxy, the faster it is moving away
300
The name for a beginning or new star
What is protostar
300
by using an H-R diagram, scientists can determine this about a star
What is age
300
Type of galaxy that looks like a pinwheel
What is spiral galaxy
300
Describe our star- the sun
What is an average, solitary, long-lived, medium hot, yellow star
400
One of the evidences of the big bang that was discovered using a radio telescope
What is cosmic background radiation
400
the two elements that compose a star
What is hydrogen and helium
400
a star measuring 50,000 degrees C is red or blue/white
What is blue/white
400
star system with two stars
What is binary
400
The hottest and coolest stars are this color
What is white/blue and red
500
Hubble's law, cosmic background radiation and this are three forms of evidence for the big bang
What is age of the universe
500
The reaction at the core of a star that creates it's energy
What is fusion
500
an old star would be positioned where on an H-R diagram
What is far right or has low temp
500
Galaxies are still doing this because of the force of the big bang
What is moving away or expanding
500
Explain how fusion works
What is atoms are brought together by gravity with intense heat and collide together to form a new element, releasing a tremendous amount of energy