Question

Identify the least dense and most dense planets and provide an explanation as to why they are the least and most dense.

Answer 1

Saturn is the least dense planet, while Earth is the densest planet in our solar system.

Step-by-step explanation:

The least dense planet in our solar system is Saturn, while the densest planet is Earth. Saturn is a gas giant composed mostly of hydrogen and helium, which have lower densities compared to the rocks and metals found on rocky planets like Earth. Earth, on the other hand, has a higher density due to its solid composition and a core made of iron and nickel.

Answer 2

Explained

Step-by-step explanation:

The most dense planet in our solar system is Earth. Earth is most dense planet because

• Earth is made of dense material like rocks, core is made of metals, soil and water. The average density of earth is 5.5 gram/cm^3.

• The overall mass of Earth is higher than those of other rocky planets. This heaviness accounts for higher density of earth.

The least dense planet of the solar system is Saturn because Saturn is mostly made of gases and its size is smaller than the Jupiter. Jupiter has more gravity hence its density is higher to Saturn. Moreover, Uranus and Neptune are ice giants. Although they are also made of gases but due their distance from sun most of these gases have solidified. Hence making them more dense than Saturn and Jupiter.