Formation and Motion of Galaxies Review

Front

What is the first event that happened in the formation of our solar system?

Back

A star goes supernova, sending energy to a cloud of gas and dust nearby.

Front

What is the term used to describe the distance light travels in one year?

Back

light year

Front

Which magnitude is the brightest?

Back

-7

Front

What is the correct order of the lifecycle of a star?

Back

protostar, main sequence star, red giant, white dwarf

Front

What force played a major role in the formation of our galaxy?

Back

gravity

Front

What is a galaxy?

Back

A galaxy is a massive system that consists of stars, star clusters, dust, gas, and dark matter, bound together by gravity.

Front

What is a light year?

Back

A light year is the distance that light travels in one year, approximately 5.88 trillion miles (9.46 trillion kilometers).

Front

What is the main sequence star?

Back

A main sequence star is a star that is in the stable phase of its lifecycle, where it fuses hydrogen into helium in its core.

Front

What happens during the red giant phase of a star?

Back

During the red giant phase, a star expands and cools after it has exhausted the hydrogen in its core.

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.