Nebular Theory

Front

What is a giant sphere of glowing gases called?

Back

Star

Front

How did the planets of the solar system form?

Back

The planets formed as planetesimals collided into one another.

Front

What is a nebula?

Back

A nebula is a cloud of dust and gas.

Front

What is the process called where smaller rocks come together to form larger rocks, and eventually planets?

Back

Accretion

Front

What happened about 4.5 billion years ago in the formation of planets?

Back

Pieces of rock and ice accumulated more material until they grew into planets and moons.

Front

What is the main component of a nebula?

Back

A nebula primarily consists of dust and gas.

Front

What is the significance of planetesimals in the formation of the solar system?

Back

Planetesimals are small rock or icy bodies that collide and combine to form larger bodies like planets.

Front

What is the role of gravity in the formation of planets?

Back

Gravity pulls together dust and gas in a nebula to form larger structures like planets.

Front

What is the difference between a star and a planet?

Back

A star is a giant sphere of glowing gases that produces light, while a planet is a celestial body that orbits a star.

Front

What is the process of fusion in stars?

Back

Fusion is the process where hydrogen atoms combine to form helium, releasing energy that makes stars shine.