Making Informed Decisions. With so many options available, selecting the healthiest fast food kidsâ. meal can be difficult. Based on our research findings, listed below are the. most nutritious options available at each restaurant and how substitutions. in the meal affect calories. Use this as a reference guide to make informed.
Size, Mass, and Orbit: With a mean radius of 6371 km and a mass of 5.97Ã1024 kg, Earth is the fifth largest and fifth most-massive planet in the Solar System. In essence, it is the largest terrestrial planet, but is smaller and less massive than any of the gas/ice giants of the Outer Solar System.
Density, mass and volume. Earth's density is 5.52 grams per cubic centimeter. Earth is the densest planet in the solar system because of its metallic core and rocky mantle. Jupiter, which is 318 more massive than Earth, is less dense because it is made of gases, such as hydrogen. Earth's mass is 6.6 sextillion ton (5.9722 x 10 24 kilograms). It volume is 1.08321 x 10 12 km. The total surface area of Earth is about 197 million square miles (509 million square km). About 71 percent is covered by water and 29 percent by land.