Role of Nuclear Fusion Stars

What is the primary fuel for nuclear fusion reactions in stars like the Sun?

• Carbon

• Hydrogen

• Oxygen

• Helium

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What is the characteristic of stars that makes them good nuclear fusion reactors?

• High surface temperature

• High radiation levels

• High mass

• High pressure at the center

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What is a star?

• A star is a huge ball of gas and dust that produces its own energy through nuclear reactions in its core.

• A star is a huge ball of rocks that are pulled together by gravity.

• A star is a huge ball of gas that produces its own energy through nuclear reactions in its mantle.

• A star is a huge rock that produces light through chemical reactions.

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Gravity pulls gases and dust particles in space toward one another, squeezing them into a smaller and smaller space. The temperature at the center rises high enough for nuclear fusion of hydrogen to begin.
What stage in a stars life cycle is this describing?

• The birth of a star

• The death of a star

• Black Hole

• Stellar Nebula

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How do stars form?

• through the sun

• when nebula collapses and nuclear fusion occurs

• through supernova

• Magic

Gravity pulls more dust and gas to its core, ___________ will occur and a star is formed.

• chemical reaction

• nuclear reaction

• physical reaction

• oxidation

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The balance between________ produced from nuclear fusion and ________ holds the star disc together.

• pressure - energy

• gravity - energy

• energy - gravity

• temperature - pressure

What is the gas that makes nuclear fusion inside the star core?

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What is playing a crucial role in the formation of stars? Explain how.

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Which force causes the release of energy as visible light and infrared heat in a star?

• Weak nuclear force

• Gravity

• Electromagnetism

• Nuclear fusion

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