The Inner Solar System

Atmospheric differences among terrestrial planets

Geological activity on terrestrial planets

Difference between 'inner' and 'inferior' planets

Mercury's surface features include ______, ______ from ancient volcanic activity, and massive ______ known as lobate scarps.

The planet Mercury has a very thin ______, mainly made of atoms ejected by the ______.

Scientists are fascinated by Mercury's large ______ core, which is disproportionate to its ______, leading to various formation theories.

Mercury is devoid of moons and has a landscape shaped by its cooling and contraction, which formed large ______ known as lobate scarps.

Venus's orbit distance from the Sun in AU

Reason for lack of global magnetic field on Venus

Of the inner planets, ______ is the most massive and densest, circling the Sun between 0.983 and 1.017 AU.

The atmosphere of ______ is oxygen-rich, a result of ______, and its ______ protects against harmful solar and cosmic radiation.

______'s climate stability and ocean tides are influenced by its large natural satellite, the ______, a rarity among terrestrial planets.

Mars's orbit range from the Sun in AU

Notable geological features on Mars

The ______ ______, situated between 2.3 and 3.3 AU from the Sun, contains remnants from the early Solar System.

Among the objects in the asteroid belt is the ______ ______ Ceres and large asteroids like Pallas and Vesta.

Pallas and Vesta, along with Ceres, exhibit signs of ______ and ______ ______ activity.

Contrary to its name, the asteroid belt isn't tightly packed, allowing ______ to pass through it quite easily.

Kirkwood gaps definition