How rocks behave under different types of stress such as pulling apart?
GeologyWhen subjected to stress, the earth’s crust deforms. Stress can be simply defined as a force applied to a certain unit of volume. Every solid has a force of its own to resist the stress. When the stress exceeds the strength of the material, the object is deformed and a change in shape and/or volume
What does Moho stand for in earth science?
GeologyThe Moho is the boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. Also termed the Mohorovicic’ discontinuity after the Croatian seismologist Andrija Mohorovicic’ (1857-1936) who discovered it. What is the Moho quizlet? Moho. (n.) the
Where are most sedimentary rocks formed?
GeologyCommon Sedimentary Rocks: These rocks often start as sediments carried in rivers and deposited in lakes and oceans. When buried, the sediments lose water and become cemented to form rock. How are most sedimentary rocks formed? Sedimentary rocks are formed when sediment is deposited out of air, ice, wind, gravity, or water flows carrying the
What happened in the Precambrian era?
GeologyThis era began with the formation of the earth from dust and gas orbiting the Sun about 4.6 billion years ago. During this era the surface of the Earth was like popular visions about Hades: oceans of liquid rock, boiling sulfur, and impact craters everywhere! What are some fun facts about the Precambrian era? –The
What are Tiltmeters used for?
GeologyTiltmeters are used extensively for monitoring volcanoes, the response of dams to filling, the small movements of potential landslides, the orientation and volume of hydraulic fractures, and the response of structures to various influences such as loading and foundation settlement. How do tiltmeters help predict volcanoes? Keypoints: Moving magma in a volcano can cause the
What is a hollow rock lined with crystals?
Geologya hollow rock or nodule with the cavity usually lined with crystals Crossword Clue. 5 Letters: GEODE. What is a crystal lined rock called? GEODE. (mineralogy) a hollow rock or nodule with the cavity usually lined with crystals. What is a sea eagle crossword? A SEA EAGLE Crossword Clue Answer Letters A SEA EAGLE with
What is the difference between continents and ocean basins quizlet?
GeologyWhat is the difference between continents and ocean basins? Ocean basins are made of thin basaltic material that is denser. Continents are made of thick granitic material that is less dense. What is the difference between continents and ocean basins? Continents are large and continuous masses of land which are separated by expanses of water.
What is basal melting?
GeologyBasal melt The melting point of water decreases under pressure, meaning that water melts at a lower temperature under thicker glaciers. What causes basal melting? Basal melting is primarily the result of geothermal heating and pressure of the ice mass. What is basal temperature glaciers? The basal temperature gradient (figure 2) determines the extent to
How do you identify moraines?
GeologyLateral moraines are usually found in matching ridges on either side of the glacier. The glacier pushes material up the sides of the valley at about the same time, so lateral moraines usually have similar heights. If a glacier melts, the lateral moraine will often remain as the high rims of a valley. What are
Is Marble A granite?
GeologyGranite is an igneous rock, which means it was once molten and formed as it cooled deep within the earth. The minerals contained in granite usually appear as small flecks throughout the stone. Marble, on the other hand, was once limestone that changed due to intense heat and pressure. Is marble and granite the same?