Active lava flows at volcanoes might move several feet per minute when hot. As the lava flows cool, they slow down to a rate of only a few feet per day. Geologists in Hawaii keep a close watch on active lava flows. They use handheld global positioning system (GPS) receivers to map lava flows as accurately as possible.
Libra, Aquarius, Gemini. Religion & Spirituality. Air is the element of the mind, and airy types know that everything begins with an idea. These are the idea people, who breeze in and offer a fresh perspective on the situation at hand.
It comprises mostly of hydrogen and helium. Hydrogen, accounts for approximately 74 percent of the total mass of the sun, while helium accounts for 24 percent of the total mass. The other elements that the sun is comprised of are oxygen, iron, silicon, nickel, sulfur, magnesium, neon, carbon, chromium and calcium. Oxygen is 1 percent of the total mass of the sun, while the other elements constitute 1 percent of the total composition of the sun.