Exploring the Fusion Process that Powers the Sun

The video explains the Sun's core, where nuclear fusion occurs, converting hydrogen into helium. This process requires immense energy due to the repulsion between protons. The Sun's massive gravitational force facilitates these reactions, converting mass into energy at an astonishing rate.

What is found at the core of the Sun?

• Solid iron

• Helium gas

• Liquid water

• Dense hydrogen gas

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What is the primary nuclear reaction that powers the Sun?

• Fission of uranium

• Fusion of hydrogen into helium

• Combustion of carbon

• Oxidation of iron

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Why is it difficult for two hydrogen atoms to fuse?

• They are too cold

• They have the same charge and repel each other

• They are too large

• They are too far apart

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What force is responsible for generating the heat and pressure needed for nuclear fusion in the Sun?

• Centrifugal force

• Nuclear force

• Electromagnetic force

• Gravitational force

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What percentage of the solar system's mass is contained within the Sun?

• 50%

• 75%

• 99.8%

• 90%

What happens when protons in the Sun come together and bind?

• They split into smaller particles

• They remain unchanged

• They lose mass which is converted into energy

• They gain mass

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How many times do hydrogen atoms collide in the Sun each second?

• 100 million quadrillion quadrillion

• 100 trillion

• 100 billion

• 100 million

What is the result of the collisions between hydrogen atoms in the Sun?

• Absorption of energy

• Release of energy

• Formation of carbon

• Formation of oxygen

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NGSS.HS-ESS1-1

Approximately how much mass is converted to energy in the Sun every second?

• 3 million tons

• 7 million tons

• 1 million tons

• 5 million tons

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