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WorksheetsCFE Life Cycle of Stars
Total questions: 40
Worksheet time: 1hrs 14mins
Stars are formed from big clouds of gas and dust is known as a (a) .
The only force acting on the nebulae is (a) .
A star is born when (a) begins to happen.
Larger, cooler stars are called (a) .
The core of a Red Giant collapses and becomes a (a) .
When a massive star begins to cool and expand it is known as a (a) .
When the core of a Red Supergiant collapses, a bright event known as a (a) occurs.
After a supernova, the core can collapse into a neutron star, or if massive enough even a (a) .
When a Red Giant's outer atmosphere drifts away it is now known as a (a) .
The stable period of a star’s life cycle is called (a)
Cooler stars appear to be what color? (a)
A star at the stage in its life cycle when it stops burning hydrogen, begins burning helium, and expands to a large, low-density star.What stage in the life cycle does this describe? (a)
A large cloud of gas and dust in outer space ejected by an aging star near the end of its life cycle.What stage in the life cycle is this describing? (a)
The remains from its supernova will form a rapidly spinning, highly magnetic star called a (a)
A Red Giant burns through it Hydrogen and then uses Helium as fuel. What is the byproduct of this process? (a)
The color of a star depends on its (a)
All stars the main sequence are middle aged. That is, they are fusing (a) into (b) in their cores.
Why won't our sun ever become a black hole? (a)
What characteristics are used to classify stars?
Flammability, weight, and reactivity
Temperature/color and brightness
Conductivity, luster, and density
Malleability, distance, and viscoscity
What is magnitude? (a)
Which star is brighter than the sun? (a)
Which star is considered a main sequence star? (a)
What is the Hertzsprung-Russel Diagram?
A map which tells the approximate location of stars in the Milky Way galaxy and their distance from Earth.
A table that alphabetically lists stars by name and includes dates of when the star was first charted.
A chart which organizes stars into categories based on the amount of Hydrogen they burn.
A graph used to classify stars according to their luminosity, color, temperature, and stage.
Knowing the color of a star also tells us its (a)
Which color of star is the hottest? (a)
Which color of star is the coldest? (a)
What is not produced when light elements undergo nuclear fusion? (a)
In nuclear fusion, smaller atoms are forced together to create larger atoms. Does this process release, absorb or maintain energy? (a)
When a young, developing star becomes hot enough and dense enough, the process of (a) begins.
Define nuclear fusion.
Nuclear fusion – combining lighter atoms to make heavier ones – is what makes it possible.
Nuclear fusion – splitting lighter atoms to make heavier ones – is what makes it possible.
Nuclear fusion – combining heavier atoms to make lighter ones – is what makes it possible.
Nuclear fusion – splitting heavier atoms to make lighter ones – is what makes it possible.
When hydrogen is "fused" together on the Sun, what new element is created? (a)
Which is one of the heaviest element found in a red giant star? (a)
More massive stars continue to fuse elements in their cores all the way up to (a) .
Elements heavier than iron are not formed in Main Sequence or Red Giant Stars. Where are heavier elements like silver, gold, and lead formed? (a)
Match the following space terms with their definitions.
Collapsed core of a massive supergiant star, resulting from the Supernova
Neutron Star
Stellar core left behind after a dying star has run out of nuclear fuel and expelled its outer layers
White Dwarf
Young, hot, and bright object formed from a clump that collapses when heated up
Protostar
Cloud of gas and dust, which collapses under its gravity
Nebula
Formed when a star exhausts its core hydrogen fuel, expands, and cools
Red Giant
The most massive stars can fuse up to (a) before detonating as a supernova.
