Identifying the Odd Word Out: Celestial Bodies

The question asks us to find the word that is different from the others among the given options: Jupiter, Metis, Earth, and Mars. To solve this type of question, we need to look for a common characteristic shared by three of the words and find the one that does not share that characteristic.

Let's examine each word:

• Jupiter: This is a large planet in our Solar System. It is known as a gas giant.
• Metis: This is one of the inner moons of the planet Jupiter. Moons are natural satellites that orbit planets.
• Earth: This is the planet we live on. It is a terrestrial planet in our Solar System.
• Mars: This is also a planet in our Solar System, known as the Red Planet. It is a terrestrial planet.

Now let's group the words based on their characteristics:

• Jupiter, Earth, and Mars are all planets in our Solar System.
• Metis is a moon that orbits a planet (specifically, Jupiter).

The characteristic that links Jupiter, Earth, and Mars is that they are all planets. Metis is not a planet; it is a moon. Therefore, Metis is the word that is different from the others.

Comparison of Options: Planets vs. Moons

As the table clearly shows, Jupiter, Earth, and Mars belong to the category of 'Planet', while Metis belongs to the category of 'Moon'. This distinction makes Metis the odd word out.

Conclusion: The Odd Word

Based on the analysis of each term and the common characteristics shared, Metis is the different word. The other three words (Jupiter, Earth, Mars) are all planets, whereas Metis is a moon.

Revision Table: Understanding Celestial Bodies

Additional Information on Planets and Moons

Our Solar System contains eight major planets that orbit the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. These planets can be broadly classified into two groups:

• Terrestrial Planets: These are the inner, rocky planets - Mercury, Venus, Earth, and Mars. They have solid surfaces.
• Gas Giants: These are the outer, large planets primarily composed of gases like hydrogen and helium - Jupiter and Saturn.
• Ice Giants: Uranus and Neptune are sometimes categorized separately as ice giants, containing larger amounts of water, ammonia, and methane ices.

Moons, also called natural satellites, are celestial bodies that orbit planets. Most planets in our Solar System have moons, though Mercury and Venus do not. The number of moons varies greatly from planet to planet. For example, Earth has one moon, while Jupiter has a large number of known moons, including Metis.

Understanding the basic categories of celestial bodies like planets and moons is key to solving questions that require identifying the different element in a set.