What makes a planet less dense?

If density is greater, the object sinks. Saturn is mainly composed of the lightest two gases known, hydrogen and helium. It is the only planet in our solar system whose density is less than water….Planetary Densities.

Planet	Average Density (gm/cm3)	Required Mass for 70 cm3 (gm)
Neptune	1.6	112.0

Are bigger planets heavier?

Planets and moons are very massive objects and have a very strong pull on other objects. This phenomenon is known as gravity. More massive objects have a stronger pull than less massive objects. This is why you weigh more on larger, more massive planets like Jupiter and less on smaller, less massive planets like Mars.

Which giant planet has lowest density?

Saturn
Density of Saturn: At 0.687 g/cm3, Saturn is the least dense of the gas giants. In fact, it’s mean density is actually lower than that of water, which means that if it were possible to place the planet into a tub of water, it would float.

Which group of planets are denser?

The four inner planets Mercury, Venus, Earth and Mars are much denser. They contain only small amounts of Hydrogen and Helium and are mainly heavier elements which are denser.

Why are larger planets less dense?

The giant planets are less dense overall because they are made mainly of gases, and the inner rocky planets are more dense because they are made mainly of rock.

Why is Earth the most dense planet?

Earth is the densest planet for two reasons: it is made of dense material, and it is heavy. Both points need a bit more elaboration. Compared to a gas giant, Earth is dense! The average chunk of Earth (which is the average value of crust, mantle, all that) weighs over 5.5 grams/cm3.

Which planet is the least massive?

Mercury
What is the mass of the other planets in our solar system?

Planets (in order of least massive to most massive)	Mass (in kilograms)	Each planet’s mass relative to Earth
Mercury	3.30 x 1023	0.0553
Mars	6.42 x 1023	0.107
Venus	4.87 x 1024	0.815
Earth	5.97 x 1024	1

Which of the following is the least dense planet?

The least dense planet in the Solar System is Saturn, which has an average density of only 687 kg/m3 (42.8 lb/cu ft).

What is the most massive planet?

Jupiter
Jupiter may be the largest and most massive planet in the Solar System, but adding more mass to it… [+] If you get too much mass together in a single object, its core will fuse lighter elements into heavier ones. It takes about 75-80 times as much mass as Jupiter to initiate hydrogen burning in the core of an…

Which planet has largest density?

Earth
Earth is the fourth smallest of the planets—though in terms of the rocky planets, it’s the largest—but it’s the most dense. Jupiter is the largest planet in the solar system, but it’s Saturn—the solar system’s second largest planet—that takes the prize for least dense.