Posted on April 16, 2022 (Updated on July 9, 2025)
What does depth mean in earthquake?
Regional SpecificsIn seismology, the depth of focus or focal depth refers to the depth at which an earthquake occurs. Are shallow or deep earthquakes worse? Shallow quakes generally tend to be more damaging than deeper quakes. Seismic waves from deep quakes have to travel farther to the surface, losing energy along the way. Is 10km a
Posted on April 16, 2022 (Updated on July 9, 2025)
Where is the safest place to live in California from earthquakes?
Regional SpecificsSacramentoSacramento Is the Safest Place to Live in California from Earthquakes. BestPlaces ranked Sacramento as the safest place to live in California from natural disasters. Where should you live to avoid wildfires? The Best Places to Live In and Avoid Fires in NorCal Ukiah Endowed with ecological wealth in the form of the mild
Posted on April 16, 2022 (Updated on July 9, 2025)
What is Pangaea and how is it related to continental drift?
Regional SpecificsPangaea existed about 240 million years ago. By about 200 million years ago, this supercontinent began breaking up. Over millions of years, Pangaea separated into pieces that moved away from one another. These pieces slowly assumed their positions as the continent we recognize today. What is continental drift and how does it relate to Pangea?
Posted on April 16, 2022 (Updated on July 9, 2025)
What colors can limestone be?
Regional SpecificsLimestone is commonly white to gray in color. Limestone that is unusually rich in organic matter can be almost black in color, while traces of iron or manganese can give limestone an off-white to yellow to red color. What Colours can limestone be? Natural limestone originally deposits in shallow sea beds and the color ranges
Posted on April 16, 2022 (Updated on July 9, 2025)
Who is the father of petrology?
Regional Specificsgeologist Sir James HallSir James Hall (1761–1832) is considered to be the father of experimental petrology. When was petrology invented? Petrography as a science began with a technique invented in 1828 by the Scottish physicist William Nicol for producing polarized light by cutting a crystal of Iceland spar (calcite) into a special prism, which is
Posted on April 16, 2022 (Updated on July 9, 2025)
What are examples of cinder cone volcanoes?
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. What type of volcanoes are cinder cone? Cinder cones are the