Astronomy Unit Review

Front

What is the Big Bang Theory?

Back

The Big Bang Theory is the leading explanation about how the universe began, stating that it started from a singular point approximately 11-15 billion years ago and has been expanding ever since.

Front

How was matter distributed in the early universe?

Back

Matter in the early universe was unevenly distributed, leading to the formation of galaxies and other structures.

Front

What is a nebula?

Back

A nebula is a giant cloud of dust and gas in space, and it is the birthplace of stars.

Front

What characterizes a spiral galaxy?

Back

A spiral galaxy has a bulge of stars at the center and arms that extend outward, resembling a pinwheel.

Front

What is an irregular galaxy?

Back

An irregular galaxy has a disorganized appearance and lacks a distinct shape, often being smaller than other types of galaxies.

Front

What is a white dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a star that has exhausted its nuclear fuel.

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.

Front

What is the difference between a spiral and elliptical galaxy?

Back

Spiral galaxies have a distinct spiral structure with arms, while elliptical galaxies are more rounded and lack the spiral structure.

Front

What is a quasar?

Back

A quasar is an extremely luminous and active galactic nucleus powered by a supermassive black hole.

Front

What role do nebulae play in star formation?

Back

Nebulae provide the necessary materials (gas and dust) for the formation of new stars.