Third Quarterly Assessment in Physical Science

  For items 1-6, refer to the given scenario

          Carla researched about the formation of elements. She discovered that light and heavy elements are formed by different processes. Some elements are formed after Big Bang while others are also formed during star formation.

Which process involves the formation of light elements?

• Primordial Nucleosynthesis

• Stellar Nucleosynthesis

• Synthetic Nucleosynthesis

• Natural Nucleosynthesis

Which process involves the formation of heavy elements?

• Primordial Nucleosynthesis

• Stellar Nucleosynthesis

• Big Bang Nucleosynthesis

• Natural Nucleosynthesis

Which among the following elements is NOT a product of stellar nucleosynthesis?

• Iron

• Carbon

• Oxygen

• Hydrogen

Which part of the star where nuclear fusion occurs?

• Cloud

• Core

• Nebula

• Supernova

During which phase of a star's life does nuclear fusion primarily occur to form heavier elements such as iron and oxygen?

• Protostar

• Main Sequence

• Red Giant

• White Dwarf

What is the primary mechanism through which elements heavier than iron are synthesized in stars?

• Neutron capture

• CNO cycle

• Proton-proton chain reaction

• Alpha process

For items 7-10, refer to the given statement

          Americium is an element that is made by scientists inside the laboratory. Using the concept of atomic number, man-made elements are discovered.

What type of element is Americium?

• Light

• Heavy

• Natural

• Synthetic

What sub-atomic particle is equivalent to the atomic number?

• Proton

• Neutron

• Electron

• Positron

How did the concept of atomic number contribute to the synthesis of new elements?

• By predicting the stability of isotopes

• By guiding the creation of compounds

• By identifying the number of electrons in an atom

• By providing a framework for understanding nuclear reactions

What role do nuclear reactions play in the laboratory synthesis of elements?

• They convert elements into compounds.

• They induce chemical reactions between elements.

• They produce stable isotopes of existing elements.

• They create new atomic nuclei by fusion or capture processes.