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topic 1
topic 2
topic 3
topic 4
topic 5
100
A large cloud of gas and dust.
What is Nebula
100
Starts out as diffused clouds of gas and dust drifting through space. A single one of these clouds is called a nebula.
What is Step #1
100
the blue 0white hot core of a star is called
What is a white dwarf
100
A shell of cooler hydrogen
What is radiactive zone
100
the approximate surface temperature of the sun
What is 6000
200
The contracting cloud becomes a ________ and is the earliest stage of a star's life.
What is a protostar
200
The force of gravity that pulls a nebula together forming clumps called protostars.
What is Step #2
200
factors that affect the color of the star
What is the luminosity and temperature
200
the apparent surface of the star
What is photosphere
200
Is the surface temperature of the white dwarf stars higher or lower than red super giants?
What is higher
300
A star is born
What is when the gas and dust from a nebula become so hot that nuclear fusion begins.
300
Heat and pressure build in the core of the protostar until nuclear fusion takes place.
What is Step#3
300
A hot gas moves up toward the surface.
What is convection zone
300
orange-red layer above the photosphere
What is Chromosphere
300
the color of the stars with highest surface temperature
What is blue
400
Once a star is "turned on" it is known as
What is main sequence star
400
Hydrogen atoms are fused together generating an enormous amount of energy igniting the star causing it to shine.
What is Step# 4
400
the lightest part
What is core
400
the color of the stars from the hottest to the coldest
What is red
500
when a main sequence star begins to run out of hydrogen fuel a star becomes
What is red giant or red super giant
500
What happens next depends on the mass of the star. The star begins to run out of fuel and expands into a red giant or a red super giant.
What is Step # 5 What is Step # 6
500
outermost layer
What is corona
500
the factor that affects the luminosity of the star
What is the size
500
list the color of the stars with the lowest surface temperature
What is blue, yellow, orange, and red