Front

What are terrestrial planets?

Back

Terrestrial planets are rocky planets that are denser and formed from heavier materials in hotter regions of the solar system.

Front

What are gas giants?

Back

Gas giants are large planets that are less dense and primarily composed of gases, often having a rocky core surrounded by thick atmospheres.

Front

What does the planetary nebular theory explain?

Back

The planetary nebular theory explains that solar systems form from a spinning and flattening planetary nebula that creates an accretionary disk.

Front

What is the eccentricity of Earth's orbit?

Back

Earth's orbit has an eccentricity that is nearly circular.

Front

What role did the Great Oxidation Event play in Earth's atmosphere?

Back

The Great Oxidation Event significantly increased the levels of oxygen in Earth's atmosphere, making it more habitable.

Front

How did the formation of the moon affect Earth's atmosphere?

Back

The formation of the moon did not directly help make Earth's atmosphere more habitable.

Front

What is the relationship between carbon dioxide and oxygen levels in the atmosphere?

Back

As carbon dioxide levels decrease due to photosynthesis, oxygen levels increase.

Front

What are the main components of the solar system?

Back

The main components of the solar system include the Sun, planets, moons, asteroids, comets, and meteoroids.

Front

What is the difference between terrestrial planets and gas giants?

Back

Terrestrial planets are rocky and denser, while gas giants are composed mainly of gases and are less dense.

Front

What is an accretionary disk?

Back

An accretionary disk is a rotating disk of dense gas and dust surrounding a newly formed star, from which planets can form.