Magma - Study guides, Class notes & Summaries

Where is magma generated? Where are the greatest amounts produced? CORRECT ANSWER the uppermost mantle and at divergent plate boundaries partial melting CORRECT ANSWER incomplete melting if rocks where magma is enriched with ions top factors in viscosity CORRECT ANSWER gas CO2 Sulfer pyroclastic CORRECT ANSWER broken bits of ash and rock thrown from a volcano 3 main types of volcanoes CORRECT ANSWER shield composition strato types of lava flows CORRECT ANSWER basaltic- 90% an...

Explain how tectonic processes lead to the formation of an underwater volcano - divergent plates / description ; hot gases / molten rock / lava / magma + rises / erupts ; lava cools / solidifies / hardens to form rock ; Describe the mutualistic relationship between these algae (zooxanthellae) and the coral. - any 3 of: algae photosynthesise ; produce oxygen / glucose / sugars / carbohydrates / organic compounds / amino acids for coral ; corals provide protection for algae ; corals pr...

Buoyancy CORRECT ANSWER What causes magma to rise? Less Dense Material is forced up by a buoyant force CORRECT ANSWER What happens when less dense material is trapped below more dense material Temperature, Volatiles, and Silica CORRECT ANSWER What 3 things does Viscosity depend on? Low Viscosity CORRECT ANSWER High Temp More Volatiles Less SiO2 (*Mafic*) Flows easily (Basaltic Lava Flows) High Viscosity CORRECT ANSWER Lower Temp Less Volatiles More SiO2 (*Felsic*) Doesn't ...

What is a mineral? - Answer-a naturally occurring, inorganic solid that has a crystal structure and a definite chemical composition Streak - Answer-the color of a mineral in powdered form Luster - Answer-The way a mineral reflects light Cleavage - Answer-the tendency of a mineral to break along flat surfaces Fracture - Answer-the manner in which a mineral breaks along either curved or irregular surfaces Hardness - Answer-a measure of how easily a mineral can be scratched Densit...

If a magma chamber undergoes fractional crystallization during cooling, how will the remaining magma differ from the parent magma? - correct answer It will be more felsic What type of magma can be produced when upper-mantle peridotite undergoes decompression along mid-ocean ridges? - correct answer basaltic Mineral - correct answer -Naturally ocurring -inorganic element or compound -has an orderly internl structure and characteristic chemical composition, crystal form, and physical prope...

LUOA Earth Science Module 2 (2023/2024) Rated A Copper is generally used for electrical wiring All rocks are made of minerals We all use minerals every day. We brush our teeth with toothpaste containing ____________, an abrasive powder that scrubs our teeth. We take a shower, get out and maybe put __________ powder on us. We turn on the light switch that has wires made of ___________. calcite, talcum, copper Why is oil not a mineral? (Choose 2) because it is a liquid, because it is made of li...

EOS 120 Final Exam Flash Cards Exam Card QUESTIONS AND CORRECT DETAILED ANSWERS ( VERIFIED ANSWERS) |ALREADY GRADED A+ 2023 What are eubacteria and where did they come from? - CORRECT ANSWER They are bacteria that need oxygen to survive, they most likely evolved from archea bacteria. What are vestigal structures? - CORRECT ANSWER Structures that no longer serve a purpose. What are homolgous structures? - CORRECT ANSWER From similar ancestors yet these features are oriented differ...

Lahar CORRECT ANSWER mudflow originating from a volcanic slope, also called mass wasting events What is a geological example of both a hot spot AND divergent plate boundary location? CORRECT ANSWER Iceland Where is magma generated? CORRECT ANSWER Uppermost mantle Where is the greatest amount of magma created? CORRECT ANSWER At divergent plate boundaries. A lesser amount is formed at subduction zones. It can also be formed when crustal rocks melt. Geothermal Gradient CORRECT ANSWER Wh...

Density - Answer This equals the mass of an objects * its volume. The unit for this is g/mL. Water Displacement - Answer How do you find the volume for an irregular object? Warm - Answer This type of air/water/magma rises because it's less dense Cold - Answer This type of air/water/magma sinks because it's more dense Pressure - Answer What else increases when density increases? 1g/mL - Answer What is the density of liquid water? Liquid - Answer This form ...

igneous rock formed as result of tectonic process that brings magma to earth's surface what's after volcano! sedimentary rock formed from the compaction of rock fragments what's after erosion! metamorphic rocks extreme pressure causes rocks to change... will next go into magma if heats up! Pangea 200 million years ago.. all continents together hydrosphere the many bodies of water on earth's surface groundwater water stored underground in rock formations called aquifers