What is the center of the Earth?
Regional SpecificsAt the center of the Earth is the core, which has two parts. The solid, inner core of iron has a radius of about 760 miles (about 1,220 km), according to NASA. It is surrounded by a liquid, outer core composed of a nickel-iron alloy. Where is the exact center of the Earth? In 2003,
What is secondary rock?
Regional SpecificsRocks composed of particles derived from the erosion or weathering of preexisting rocks, such as residual, chemical, or organic rocks formed of detrital, precipitated, or organically accumulated materials; specif., clastic sedimentary rocks. What is a secondary rack? Secondary rack is a type of insulator cable support with a steel U channel at the base. The
What are some examples of a cinder cone volcano?
Regional SpecificsCinder cones may form by themselves or when new vents open on larger, existing volcanoes. Mauna Kea, a volcano on the American island of Hawaii, and Mount Etna, a volcano on the Italian island of Sicily, are both covered with hundreds of cinder cones. Is Mount Fuji a cinder cone volcano? No, Mount Fuji is
How does paleomagnetism prove continental drift?
Regional SpecificsPaleomagnetists led the revival of the continental drift hypothesis and its transformation into plate tectonics. Apparent polar wander paths provided the first clear geophysical evidence for continental drift, while marine magnetic anomalies did the same for seafloor spreading. What is paleomagnetism and how does it provide evidence for plate tectonics? Paleomagnetism also provides evidence to
How are Anthodites formed?
Regional SpecificsTheir mode of formation is not well understood, but they presumably form in air-filled chambers by the slow precipitation of calcium carbonate from thin films of water that are held to their surface by capillary attraction. Where are Anthodites found? Anthodites are found in practically every Guadalupe cave, but form particularly exquisite arrays in the
What kind of volcano is Mount Pinatubo?
Regional Specificsstratovolcanostratovolcano in the Philippines. Why is Mount Pinatubo a stratovolcano? Pinatubo, a large volcano on the Philippine isle of Luzon, is a stratovolcano, or composite volcano. Stratovolcano is the name given to volcanoes whose repeated eruptions have left layers of volcanic materials built-up on top of each other, forming a mountain. What type of volcano