Lifecycle of Stars 1 – Hollms School

First	First	Last	Quiz Score Total	Image 1	Question 1	In the main sequence, a star carries out ............ ,	joining hydrogen nuclei to make heavier elements such as ............. .	The ............ force of gravity is balanced by the outward forces due to fusion energy.	The star is in ............ .	At some point, the ............ starts to run out.	Now the outward forces due to ............	are less than the inward force of ............ . The star collapses inwards.	As the star collapses, the temperature of the star ............ .	Now the star fuses together helium nuclei to form ............ elements.	The star now forms a small body called a ............ .	Eventually the star cools completely to form a ............ .	Because nuclear fusion has ............. , this gradually cools down.	At some point, the star cannot fuse helium and starts to ............ .	The star now expands to form a ............ .	Quiz Percentage Grade
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First	First	Last	Quiz Score Total	Image 1	Question 1	In the main sequence, a star carries out ............ ,	joining hydrogen nuclei to make heavier elements such as ............. .	The ............ force of gravity is balanced by the outward forces due to fusion energy.	The star is in ............ .	At some point, the ............ starts to run out.	Now the outward forces due to ............	are less than the inward force of ............ . The star collapses inwards.	As the star collapses, the temperature of the star ............ .	Now the star fuses together helium nuclei to form ............ elements.	The star now forms a small body called a ............ .	Eventually the star cools completely to form a ............ .	Because nuclear fusion has ............. , this gradually cools down.	At some point, the star cannot fuse helium and starts to ............ .	The star now expands to form a ............ .	Quiz Percentage Grade