Nuclear Fusion and Particle Physics

The video explains how the sun's core facilitates nuclear fusion, converting hydrogen into helium. It describes the role of protons, the strong nuclear force, and the formation of deuterium and helium-3. The process emits gamma rays, contributing to the sun's heat. The video also covers electron annihilation and the sun's impact on Earth.

What is the temperature of the sun's surface?

• 5000 degrees Celsius

• 7000 degrees Celsius

• 8000 degrees Celsius

• 6000 degrees Celsius

What particles make up the dense hydrogen plasma in the sun's core?

• Electrons and protons

• Neutrons and positrons

• Neutrons and electrons

• Protons and neutrons

What force allows two protons to overcome their repulsion and collide?

• Gravitational force

• Electromagnetic force

• Strong nuclear force

• Weak nuclear force

What is emitted by a proton during Beta Plus decay?

• A neutron and an electron

• A neutron and an anti-electron

• A neutrino and an anti-electron

• A neutrino and an electron

What is the heavy form of hydrogen called?

• Helium-4

• Deuterium

• Tritium

• Helium-3

What is formed when a proton and deuterium nucleus fuse?

• Helium-3

• Tritium

• Helium-4

• Deuterium

What is emitted during the fusion of helium-3 nuclei?

• Alpha particles

• Gamma rays

• Neutrinos

• Beta particles

What happens to the leftover electrons after fusion?

• They form new hydrogen atoms

• They are ejected into space

• They combine with anti-electrons and vanish

• They become part of helium-4

How many hydrogen atoms are fused to form one helium atom?

• Five

• Four

• Three

• Two

How long does it take for the heat from the sun's core to reach Earth?

• 12 minutes

• 10 minutes

• 8 minutes

• 5 minutes