What is mineral and types?
Natural EnvironmentsWhat are the two main types of minerals? There are two types of minerals: macro minerals and trace minerals. Macro means “big” in Greek (and your body needs more macro minerals than trace minerals). The macro mineral group consists of calcium, arsenic, magnesium , sodium, potassium, chloride and sulphur. What are the main types of
What are four different landforms created by Lava?
Regional SpecificsKey Concept:Volcanic eruptions create landforms made of lava, ash, and other materials. These landforms include shield volcanoes, cinder cone volcanoes, composite volcanoes, and lava plateaus. A shield volcano is a gently sloping mountain. It forms when a volcano erupts quietly. What is the most common landform created by lava? The most obvious landforms created by
When did the Ice Age Floods affect the Columbia River Gorge?
Regional SpecificsBetween 18,000 and 14,000 years ago, raging flood waters and icebergs in 40 to 120 Ice Age Floods tore away at the exterior cone, leaving Beacon Rock as a basalt monolith sticking out of the north bank of the Columbia River. When did the Ice Age Floods happen? 18,000 to 12,000 years ago During the
When did the San Andreas Fault form?
Regional SpecificsThe San Andreas Fault was born about 30 million years ago in California, when the Pacific Plate and the North America plate first met. Before then, another oceanic plate, the Farallon plate, was disappearing beneath North America at a subduction zone, another type of plate boundary. When did the San Andreas fault begin to form?
What was the first sign of life on Earth?
Regional SpecificsThe earliest life forms we know of were microscopic organisms (microbes) that left signals of their presence in rocks about 3.7 billion years old. The signals consisted of a type of carbon molecule that is produced by living things. What was the first sign of life? In July 2018, scientists reported that the earliest life
What is mined in the interior plains?
Regional SpecificsAnother natural resource of the Interior Plains is its mining industry. Some of the items that are mined for are oil, natural gas, coal, potash copper, zinc, gold and uranium. These items are used for fuels and other items in our daily lives. The Interior Plains has long cold winters and short hot summers. What