11th Grade Physical Science Review

The formation of elements is known as _________.

• nucleotides
• Synthogenesis
• nuclear fission
• nucleosynthesis

The first elements were formed in what is known as _________________.

• Big Bang Nucleosynthesis
• Stellar Nucleosynthesis
• Supernova Nucleosynthesis
• Genonucleosynthesis

________ nucleosynthesis happens in the center of stars and is where the elements helium through iron (Fe) are formed. 

• Big Bang
• Stellar
• Supernova
• Superdupernova

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

• combustion

• nuclear fission

• nuclear fusion

• nuclear synthesis

In this process, there’s a buildup of a VERY heavy isotope, then as beta- decays occur, you march up in atomic number and produce heavy product.

• S Process

• R-Process

• Nuclear Fission

• Proton-Proton Reaction

In which stage do massive stars explode and release large amount of energy?

• Main sequence

• Protostar

• Super Nova

• White dwarf

Which is the first stage of a star’s life cycle?

• black hole

• nebula

• protostar

• white dwarf

How did the clouds of gas and dust pull together leading to formation of protostar?

• Due to decrease of temperature in the universe

• Due to gravity

• Due to increase of pressure

• Due to the electromagnetic force

Aside from hydrogen and helium, which of the following are the other two (2) light elements being formed during the Big Bang nucleosynthesis? (Click 2 answers.)

• Carbon

• Nitrogen

• Lithium

• Helium

• Beryllium

Which of the following involves the fusion of two protons into helium? As the protons fuse, one of them undergoes beta plus decay, converting into a neutron by emitting a positron and an electron neutrino.

• proton to proton chain reaction

• CNO cycle

• Tri-alpha process

• Alpha Ladder