Physical Science Quarter 1 Review

The most accepted theory about the formation of the universe which explains that it continues to expand.

• big bang theory
• steady state theory
• oscillating theory

Answer explanation

Jupiter is a gas giant made primarily of hydrogen and helium. Unlike terrestrial planets that have solid surfaces, gas giants like Jupiter don't have a well-defined solid surface, allowing them to accumulate more mass in a gaseous form. This composition has allowed Jupiter to grow significantly larger than planets with solid surfaces.

Which among the following is not a light element?

• iron
• hydrogen
• helium

The process of forming elements is known as;

• nucleosynthesis
• synthesis
• genesis

Light elements such as hydrogen and helium are formed through the process of ________ nucleosynthesis.

• big bang
• fusion
• stellar

Which element is the lightest and at the same time the most abundant in outer space?

• hydrogen
• helium
• lithium

A reaction in which two or more nuclei combine to form heavier nuclei.

• nuclear fusion
• combustion
• nuclear fission

What element can be formed when three atoms of helium are fused?

• carbon
• silicon
• oxygen

Which of the following elements does not belong to the group?

• beryllium
• silicon
• iron

The process in which elements are formed at the center of a star.

• stellar nucleosynthesis
• nuclear fusion
• supernova nucleosynthesis

Elements bigger than Iron are formed through _______.

• supernova nucleosynthesis
• stellar nucleosynthesis
• big bang nucleosynthesis