Front

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

Back

They all formed at about the same time & relative space.

Front

What do astronomers use to model the origin of the solar system based on current observations?

Back

Models.

Front

What are the characteristics of terrestrial planets?

Back

No or very few moons; solid surfaces; moderate atmospheres.

Front

What best describes Jovian or gas giant planets?

Back

Many moons; thick atmospheres; rapid spin rates.

Front

Why do terrestrial planets have high densities and solid surfaces?

Back

Because lighter elements were stripped away by the Sun.

Front

What is the main difference between terrestrial and Jovian planets?

Back

Terrestrial planets are rocky and solid, while Jovian planets are gas giants with thick atmospheres.

Front

What is retrograde motion?

Back

The apparent backward motion of a planet as observed from Earth.

Front

What role does the Sun play in the formation of the solar system?

Back

The Sun's gravity helped to shape the orbits of the planets and influenced their formation.

Front

What are the main components of a planetary system?

Back

A star, planets, moons, asteroids, comets, and other celestial bodies.

Front

How do models help astronomers understand the solar system's origin?

Back

Models allow astronomers to simulate conditions and processes that led to the formation of the solar system.