What forces shape the land?
GeologyGravity and erosion are major factors in changing the shape of the surface of Earth. How do they shape the land? https://youtu.be/ Natural tools on our planet. Glaciers are sometimes called nature's bulldozer just like a bulldozer glaciers shape the land in three ways firstly glaciers pick up material. We call this erosion. How do
When did the Cenozoic Era began and end?
GeologyThe Cenozoic era began about 65 million years ago and continues into the present. How long did the Cenozoic Era last? about 65 million years The Cenozoic Era is the most recent of the three major subdivisions of animal history. The other two are the Mesozoic and Paleozoic Eras. The Cenozoic spans only about 65
Why are there many earthquakes on the Big Island of Hawaii?
GeologyThousands of earthquakes occur every year in the State of Hawaii. They are caused by eruptive processes within the active volcanoes or by deep structural adjustments due to the weight of the islands on Earth’s underlying crust. Thousands of earthquakes occur every year in the State of Hawaii. Why does the Big Island of Hawaii
What causes a basin and range?
GeologyThe basins (valleys) and ranges (mountains) are being created by ongoing tension in the region, pulling in an east-west direction. Over most of the last 30 million years, movement of hot mantle beneath the region caused the surface to dome up and then partially collapse under its own weight, as it pulled apart. What type
Is volcanic breccia felsic or mafic?
GeologyBecause tuffs and breccias require lots of ash to form, most tuffs and breccias are intermediate or felsic in composition. What rock type is breccia? Breccia Type Sedimentary Rock Texture Clastic; Coarse-grained (2 – 64 mm) Composition Quartz, Feldspar, Lithics Color Reddish brown Miscellaneous Angular clasts in a fine- to medium-grained matrix; Immature Is volcanic
What landforms do strike slip faults created?
GeologyStrike-slip faults, which are among the straightest and longest geologic features on Earth, are often identified by their geomorphic expression, including hallmarks such as offset rivers, shutter ridges, sag ponds, and linear, strike-parallel valleys [e.g., Wallace, 1949; Hill and Dibblee, 1953]. What do strike-slip faults create? These faults are caused by horizontal compression, but they
Is coal ash really toxic?
GeologyCoal ash is incredibly dangerous. Short-term exposure can bring irritation of the nose and throat, dizziness, nausea, vomiting, and shortness of breath. Long-term exposure can lead to liver damage, kidney damage, cardiac arrhythmia, and a variety of cancers. What is coal ash and why is it dangerous? Coal ash contains contaminants like mercury, cadmium and
What is P wave S wave and L wave?
GeologyThere are two types of seismic waves, primary waves and secondary waves. Primary waves, also known as P waves or pressure waves, are longitudinal compression waves similar to the motion of a slinky (SF Fig. 7.1 A). Secondary waves, or S waves, are slower than P waves. What are L waves in an earthquake? Surface
Who developed the principle of original horizontality?
Geologypioneer Nicholas StenoNicholas Steno (1638–1686). What does the principle of original horizontality? The Principle of Original Horizontality states: Layers of rocks deposited from above, such as sediments and lava flows, are originally laid down horizontally. Who discovered the principle of superposition? The law of superposition was formulated by Danish geologist Nicolaus Steno and outlined in
What is meant by nature of science?
GeologyWhen we describe the nature of science, we are considering the special characteristics, values, and assumptions that scientific knowledge is based on and how scientific knowledge is developed. What is an example of nature of science? Scientific Knowledge Assumes an Order and Consistency in Natural Systems Identifies patterns in data and can infer future outcomes