Elements and Nucleosynthesis Concepts

What is a theory according to the transcript?

• A random guess

• A proven fact

• An idea or belief arrived through speculation

• A fictional story

Which element is commonly used to inflate balloons?

• Hydrogen

• Beryllium

• Helium

• Lithium

Which element is found in aircraft components and satellites?

• Hydrogen

• Lithium

• Helium

• Beryllium

What did the Big Bang Theory propose about the universe's beginning?

• It started as a small, cold energy

• It started as a large, cold mass

• It began from a tiny, dense, and hot energy

• It was always the same size

What are quarks responsible for forming?

• Atoms

• Molecules

• Electrons

• Protons and neutrons

What is nucleosynthesis?

• The breakdown of atomic nuclei

• The creation of molecules

• The destruction of atoms

• The process of forming new atomic nuclei

What are the two phases of the origin of naturally occurring elements?

• Atomic and Molecular Synthesis

• Nuclear Fusion and Fission

• Primordial and Stellar Nucleosynthesis

• Big Bang and Chemical Synthesis

What percentage of ordinary matter in the universe is made up of hydrogen?

• 50%

• 25%

• 75%

• 90%

Which isotope of hydrogen has one proton and one neutron?

• Deuterium

• Tritium

• Lithium

• Helium

What happens when the universe cools enough for electrons to combine with nuclei?

• Destruction of atoms

• Formation of stable neutral atoms

• Formation of unstable atoms

• Creation of new elements