AFOQT Practice Test

Which of the following planets in our solar system are considered gas giants?

1. Earth, Mars, Venus, Mercury

2. Jupiter, Saturn, Uranus, and Neptune

3. Pluto, Ceres, Eris, Haumea

4. Saturn, Earth, Mars, Jupiter

The correct answer is: Jupiter, Saturn, Uranus, and Neptune

The planets classified as gas giants in our solar system are specifically Jupiter, Saturn, Uranus, and Neptune. These planets are characterized by their large sizes, thick atmospheres primarily composed of hydrogen and helium, and the absence of a well-defined solid surface. Jupiter and Saturn, often referred to as the "classic" gas giants, are the two largest planets in the solar system. They have extensive systems of moons and rings. Uranus and Neptune, while sometimes categorized as ice giants due to their higher concentrations of volatile substances, are also considered gas giants due to their gaseous exteriors and overall composition. The other options consist of terrestrial planets like Earth, Mars, Venus, and Mercury, or dwarf planets such as Pluto, Ceres, Eris, and Haumea, none of which fall under the category of gas giants. Therefore, the option that correctly identifies the gas giants in our solar system is the one that includes Jupiter, Saturn, Uranus, and Neptune.