SR Nebular Theory

Front

What is a nebula?

Back

An enormous cloud of dust and gas occupying the space between stars and acting as a nursery for new stars.

Front

List the inner planets of the solar system.

Back

Mercury, Venus, Earth, and Mars.

Front

What happens to planetesimals during the formation of a solar system?

Back

They keep colliding and sticking together.

Front

What occurs as a nebula collapses?

Back

It begins to rotate.

Front

What is the theory that explains the formation of the solar system?

Back

Nebular Theory.

Front

What are the outer planets of the solar system?

Back

Jupiter, Saturn, Uranus, and Neptune.

Front

Define planetesimals.

Back

Small celestial bodies that form from dust and gas in a protoplanetary disk and can collide to form larger bodies.

Front

What role do gravity and pressure play in nebula formation?

Back

Gravity pulls gas and dust together, while pressure from the collapsing material can lead to star formation.

Front

What is the significance of the main sequence in stellar evolution?

Back

It is the stage where stars spend most of their lifetime, fusing hydrogen into helium.

Front

How does a star form from a nebula?

Back

A nebula collapses under its own gravity, leading to increased density and temperature, eventually forming a star.