Astronomy Unit 2.2 - Death of stars

Front

What is the Old Age Stage of a star?

Back

The Old Age Stage of a star occurs when all the hydrogen in its core is used up as fuel.

Front

What happens to a star when it runs out of fuel in its core?

Back

When a star runs out of fuel in its core, fusion outside the core causes it to expand and become a Red Giant star.

Front

What is a Supernova?

Back

A Supernova is an explosion that occurs when a Red Super Giant star runs out of fuel and collapses.

Front

What is binding energy in the context of a nucleus?

Back

Binding energy is the energy that holds the nucleus together and is equivalent to the mass defect.

Front

What happens to elements to the left of Iron in the periodic table?

Back

Elements to the left of Iron will undergo fusion to become more stable.

Front

What is a Red Giant star?

Back

A Red Giant star is a stage in a star's evolution where it expands after exhausting hydrogen in its core.

Front

What is the significance of the mass defect in nuclear physics?

Back

The mass defect is the difference between the mass of an atomic nucleus and the sum of the masses of its individual protons and neutrons, which is related to the binding energy.

Front

What occurs during the fusion process in stars?

Back

During fusion, lighter atomic nuclei combine to form a heavier nucleus, releasing energy in the process.

Front

What is the life cycle of a massive star?

Back

The life cycle of a massive star includes stages such as main sequence, Red Super Giant, Supernova, and potentially forming a neutron star or black hole.

Front

What is a White Dwarf?

Back

A White Dwarf is the remnant core of a star that has exhausted its nuclear fuel and shed its outer layers.