Extrusive - Study guides, Class notes & Summaries

Natural Event Geological or atmospheric processes involving the release of energy and has nothing to do with people. Geological is due to the hot interior of the Earth and can be expressed as volcanoes. Atmospheric type of energy is the product of solar energy which can be expressed as tornadoes. Characteristics of a Natural Disaster (5) geological, atmospheric, magnitude, frequency, duration, areal extent Recurrence interval time between same sized events (150 years) frequency 1/recurrenc...

General of magma CORRECT ANSWER igneous rocks form as molten rock (magma, lava) cools and solidifies General characteristics of magma Forms from partial melting of rocks Magma at surface is called lava Rocks formed from lava are extrusive/volcanic rocks Rocks formed from magma at depth are intrusive/plutonic rocks Basalt melt, Hawaii CORRECT ANSWER This is lava/melted rock. This shows Lava flow Basalt flow, Hawaii CORRECT ANSWER This also shows lava flow which is cooling instantly. ...

Which of the following sedimentary rocks is usually biochemical in origin? a) bedded salt b) conglomerate c)sandstone d) wacke e) limestone ~ e What platy, parallel, mineral grains are the most visual aspect of foliated metamorphic rocks? a) carbonates b) quartz c) cocoliths d) micas e) feldspars ~ Lava flows are typically finer grained than intrusive igneous rocks. Why? a) The extrusive magma, because it is deep below the surface, cools very slowly producing very ...

What is Geotechnical Engineering? correct answers The branch of Civil Engineering that deals with soil, rock and underground water and their relation to the design, construction and operation of engineering projects. Issues Covered by Geotechnical Engineers correct answers What are the soils/rocks in the subsurface? Can the soil support the proposed project? Ground water impacts on project Impact of excavation, gradation and filling? Are natural earth slopes stable? Geotechnica...

Rocks: Earth Science Latest Update with Verified Solutions What does the term "rock cycle" refer to? The rock cycle describes a sequence of geological processes that transform rocks from one type to another over time, both on the Earth's surface and beneath it. How is magma different from lava? Magma refers to molten rock that solidifies into igneous rock beneath the Earth's surface, while lava is magma that reaches the surface and solidifies there. What is the process of w...

APSC 151 Week 2 UPDATED Exam Questions and CORRECT Answers Extrusive igneous rock - Correct Answer- - Form when magma solidifies at the surface - Can be explosion or flowing *Features*: - Lava flows Fluid, viscous, or sluggish (Ex. Central Chilean Andes) - Fissure eruptions - Volcanoes (many different types) Volcanic ash, lava, volcanic tuff (pyroclastic flow) ("tuff" layers in a tunnel) -. ex*rhyolite, andesite, basalt, komatilite* intrusive igneous rock - Correct Answer- - Form a...

2 types of Lustre ~ 1. metallic 2. non-metallic Basic 3D mineral form ~ tetrahedron Softest, hardest mineral according to mohs scale of relative hardness ~ talc, diamond Conchoidal fracture ~ smooth curved surface 3 components of magma: ~ 1. melt 2. solids 3. volatiles Geothermal gradient ~ heat increases with depth in crust Igneous rock ~ cooled magma Extrusive igneous rock ~ magma solidified at surface Intrusive igneous rock ~ magma solidified at depth Plutonic rocks ~ i...

Geology 1114 Test 1 Exam Questions And Answers (Verified And Updated) Flux melting most likely occurs at: (A) Mid-ocean ridges. (B) Transform faults. (C) Subduction zones. (D) None of the above - answer(C) Subduction zones. Decompression melting occurs as a result of: (A) Decrease of the confining pressure as the Core rises to shallower depth. (B) Increase of the confining pressure as the asthenosphere rises to shallower depth. (C) Decrease of the confining pressure as the lithosphere ...

Definitions of a mineral correct answers naturally occurring, solid, molecular structure, definite chemical composition, (usually inorganic) Definition of a rock correct answers a solid aggregate or mass of minerals what determines the crystalline structure of a mineral correct answers the size and electrical charge of ions involved Polymorphs correct answers Minerals with the same composition but different crystalline structures 4 ways minerals are formed correct answers crystalliza...

Metamorphic rock correct answers A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions. (Ex: Gneiss, Marble, Quartzite) Magma correct answers A molten mixture of rock-forming substances, gases, and water from the mantle Igneous rock correct answers a type of rock that forms from the cooling and hardening of molten rock at or below the surface (Ex: Basalt, Granite, Obsidian) Metamorphic and Igneous rock melts and turns into correct ans...