Formation of Planetary Systems

Front

What is the distance relationship between planets in the solar system?

Back

Each planet’s distance is roughly twice that of its next inward neighbor.

Front

What are the characteristics of terrestrial planets?

Back

Terrestrial planets have no or very few moons, solid surfaces, and moderate atmospheres.

Front

What does it indicate if all planets orbit in the same direction as the Sun rotates?

Back

It indicates that they all formed at about the same time and relative space.

Front

What are the small, moon-like bodies that collided to form the inner planets called?

Back

They are known as planetesimals.

Front

Is our solar system the same as others in the galaxy?

Back

False, our solar system is not the same as others in the galaxy.

Front

What are the four terrestrial planets in our solar system?

Back

Mercury, Venus, Earth, and Mars.

Front

What is the main difference between terrestrial and gas giant planets?

Back

Terrestrial planets have solid surfaces, while gas giants are mostly composed of gases.

Front

What is the significance of the Kuiper Belt?

Back

The Kuiper Belt is a region of the solar system beyond Neptune that contains many small icy bodies.

Front

What is retrograde motion?

Back

Retrograde motion is the apparent backward movement of a planet in the sky as observed from Earth.

Front

What role do asteroids play in the formation of planets?

Back

Asteroids are remnants from the early solar system and can collide to form larger bodies.