Which description best explains why the inner planets called terrestrial? (1 point)
They have no atmosphere.
They are small and highly dense.
They have Earthlike oceans.
They are visible from Earth
To determine which description best explains why the inner planets are called terrestrial, we can analyze each option and choose the most appropriate answer.
1. They have no atmosphere: While it is true that the inner planets have thinner atmospheres compared to the outer planets, it is not the sole reason they are called terrestrial. Therefore, this description is not the best explanation.
2. They are small and highly dense: This statement is accurate because the inner planets (Mercury, Venus, Earth, and Mars) are all relatively small and composed of dense materials such as rock and metal. This relates to the term "terrestrial," which refers to Earth-like characteristics.
3. They have Earthlike oceans: This statement is incorrect because the inner planets, except for Earth, do not have substantial amounts of liquid water to form Earth-like oceans. Therefore, this description is not the best explanation.
4. They are visible from Earth: Although this statement is true, it is not the primary reason why the inner planets are called terrestrial. Many other celestial objects, including the outer planets, are also visible from Earth.
Based on the analysis, the description that best explains why the inner planets are called terrestrial is: "They are small and highly dense."