Unit 6: Universe

Front

What is a Nebula?

Back

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

Front

What is the Main Sequence in stellar evolution?

Back

The Main Sequence is a stage in a star's life cycle where it fuses hydrogen into helium in its core.

Front

What is a Red Giant?

Back

A red giant is a late stage in a star's life cycle when it has exhausted hydrogen in its core and expands.

Front

What is a Planetary Nebula?

Back

A planetary nebula is a shell of gas ejected from a star during the late stages of its evolution.

Front

What is a White Dwarf?

Back

A white dwarf is a small, dense star that is the remnant of a star like the Sun after it has shed its outer layers.

Front

What is a Black Dwarf?

Back

A black dwarf is a theoretical stellar remnant that occurs when a white dwarf cools down and no longer emits significant heat or light.

Front

What are the original two elements in the universe?

Back

The original two elements in the universe are Helium and Hydrogen.

Front

Who developed the law of universal gravitation?

Back

Sir Isaac Newton developed the law of universal gravitation.

Front

What type of galaxy is the Milky Way?

Back

The Milky Way is a spiral galaxy.

Front

What are galaxies composed of?

Back

Galaxies are composed of stars, dust, and gas held together by gravity.