Space Unit (Marking Period 1) Review

Front

What is Alpha Decay?

Back

Alpha Decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle (2 protons and 2 neutrons), resulting in a decrease of the atomic number by 2.

Front

What happens to a Nitrogen atom during Alpha Decay?

Back

A Nitrogen atom (atomic number 7) emits an alpha particle and transforms into a Boron atom (atomic number 5).

Front

What is a supernova?

Back

A supernova is a powerful and luminous explosion that occurs at the end of a star's life cycle, particularly after a red supergiant runs out of nuclear fuel.

Front

What is the difference between a red giant and a red supergiant?

Back

A red giant is a star that has expanded and cooled after exhausting its hydrogen fuel, while a red supergiant is a much larger star that has gone through similar processes but is significantly more massive.

Front

What is Fusion?

Back

Fusion is the process where two light atomic nuclei combine to form a heavier nucleus, releasing a large amount of energy, as seen in stars.

Front

What is Fission?

Back

Fission is the process of splitting a heavy atomic nucleus into smaller nuclei, accompanied by the release of energy.

Front

What occurs when a small mass star runs out of hydrogen?

Back

When a small mass star runs out of hydrogen, it begins to shed its outer layers and swell into a red giant.

Front

What is the significance of the iron core in a red supergiant?

Back

The iron core of a red supergiant is significant because once it forms, it can no longer undergo fusion, leading to the core's collapse and resulting in a supernova.

Front

What is the atomic number?

Back

The atomic number is the number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is an alpha particle?

Back

An alpha particle is a type of particle consisting of 2 protons and 2 neutrons, identical to a helium nucleus, emitted during alpha decay.