Arcata is also the location of the Arcata Field Office of the Federal Bureau of Land Management, which is responsible for the administration of natural resources, lands and mineral programs, including the Headwaters Forest, on approximately 200,000 acres of public land in Northwestern California.
Compton's, 1995. They divide the mass of the Earth by the volume, which gives the average density of the material in the earth as 3.2 ounces per cubic inch (5.5 g/cm 3).. 5.5 g/cm 3. Orbits Voyage Through The Solar System. Phoenix, AZ: Software Marketing, 1989. Mean Density: (water = 1) 5.52.. 5.52 g/cm 3. Morse, Joseph Laffan.
Earth's Size. As the largest of the terrestrial planets, Earth has an estimated mass of 5.9736 Ã 1024 kg. Its volume is also the largest of these planets at 108.321 Ã 1010km3. In addition, Earth is the densest of the terrestrial planets as it is made up of a crust, mantle and core.