Volcanoes Practice Test
... and circle the Earth for years is a.pahoehoe lava. c. lapilli. b. aa lava. d. volcanic ash. __ 12.Pyroclastic material forms when a.lava flows calmly from a crack in the Earth’s crust. b.magma remains underground too long. c.magma explodes into the air and hardens. d.lava flows underwater. __ 13.Whi ...
... and circle the Earth for years is a.pahoehoe lava. c. lapilli. b. aa lava. d. volcanic ash. __ 12.Pyroclastic material forms when a.lava flows calmly from a crack in the Earth’s crust. b.magma remains underground too long. c.magma explodes into the air and hardens. d.lava flows underwater. __ 13.Whi ...
GEOL_2_mid_term_I
... (12) 1 pt. Which of the following best describes an aphanitic texture? A) The rock is crystalline; mineral grains are too small to be visible without a magnifying lens or microscope. B) The mineral grains have glassy textures. C) The rock consists of broken, volcanic-rock and mineral fragments. D) T ...
... (12) 1 pt. Which of the following best describes an aphanitic texture? A) The rock is crystalline; mineral grains are too small to be visible without a magnifying lens or microscope. B) The mineral grains have glassy textures. C) The rock consists of broken, volcanic-rock and mineral fragments. D) T ...
Earth`s Interior PPT - Lyndhurst School District
... • Texture- The look and feel of a rock’s surface, determined by the size, shape, and pattern of a rock’s grains • Grains- The particles of minerals or other rocks that give a rock its texture. • Geologists look at grain shape, size, and pattern ...
... • Texture- The look and feel of a rock’s surface, determined by the size, shape, and pattern of a rock’s grains • Grains- The particles of minerals or other rocks that give a rock its texture. • Geologists look at grain shape, size, and pattern ...
Geology and Nonrenewable Mineral Resources G. Tyler Miller`s
... An active volcano releases magma onto the earth’s surface. This release may be violent or quiet. ...
... An active volcano releases magma onto the earth’s surface. This release may be violent or quiet. ...
Terms and Definitions 2017 File
... Where liquid rock rises up through a crack in the crust. Igneous rock Rock formed from cooled molten rock eg basalt. Sedimentary rock Rock formed from grains of eroded rock, plant and animal material, that has been pressed together eg limestone. Metamorphic rock Rock formed when sedimentary rock is ...
... Where liquid rock rises up through a crack in the crust. Igneous rock Rock formed from cooled molten rock eg basalt. Sedimentary rock Rock formed from grains of eroded rock, plant and animal material, that has been pressed together eg limestone. Metamorphic rock Rock formed when sedimentary rock is ...
INSIDE THE EARTH
... EQ5: What evidence supports sea-floor spreading? Along the mid-ocean ridge, molten material is coming to Earth’s surface. Rock samples have proven that the newest rock is found at the mid-ocean ridge and the rocks get older as you move further from the ridge. EQ6: What happens at deep-ocean trenche ...
... EQ5: What evidence supports sea-floor spreading? Along the mid-ocean ridge, molten material is coming to Earth’s surface. Rock samples have proven that the newest rock is found at the mid-ocean ridge and the rocks get older as you move further from the ridge. EQ6: What happens at deep-ocean trenche ...
How Plates Create
... A deep-ocean trench may form where oceanic crust sinks toward the mantle beneath continental crust. Some of the oceanic crust melts to form magma. ...
... A deep-ocean trench may form where oceanic crust sinks toward the mantle beneath continental crust. Some of the oceanic crust melts to form magma. ...
Relative and Absolute Dating 2013
... When geologists date rocks, they are determining how long ago they formed. Two ways to do this: Relative Dating Absolute Dating ...
... When geologists date rocks, they are determining how long ago they formed. Two ways to do this: Relative Dating Absolute Dating ...
09_chapter 1
... processes of Deccan Trap Basalts based on Geochemical and Petrological studies. He further stated that the Phenocryst assemblage and Chemical Trend of the least contaminated basalts can be explained by fractional crystallization in shallow chambers under Faylite–Magnetite-Quartz (FMQ) buffered condi ...
... processes of Deccan Trap Basalts based on Geochemical and Petrological studies. He further stated that the Phenocryst assemblage and Chemical Trend of the least contaminated basalts can be explained by fractional crystallization in shallow chambers under Faylite–Magnetite-Quartz (FMQ) buffered condi ...
T1 Plate Tectonics Review Homework KEY
... 2. The speed of tectonic plate movement varies from plate to plate in the range of 1 to 10 miles per year. True or False? 3. We can measure plate velocity with radiometric dating of seamount chains, or the distance of a marine magnetic anomaly from a mid-ocean ridge. True or False? 4. Marine magneti ...
... 2. The speed of tectonic plate movement varies from plate to plate in the range of 1 to 10 miles per year. True or False? 3. We can measure plate velocity with radiometric dating of seamount chains, or the distance of a marine magnetic anomaly from a mid-ocean ridge. True or False? 4. Marine magneti ...
Reading: Inside Earth
... Your journey downward continues. At a depth of between 5 and 40 kilometers beneath the surface, you cross a boundary. Above this boundary are the basalt and granite rocks of the crust. Below the boundary is the solid material of the mantle, a layer of hot rock. The crust and the uppermost part of th ...
... Your journey downward continues. At a depth of between 5 and 40 kilometers beneath the surface, you cross a boundary. Above this boundary are the basalt and granite rocks of the crust. Below the boundary is the solid material of the mantle, a layer of hot rock. The crust and the uppermost part of th ...
Lesson 10 - Rift Volcanism
... 1) Beneath Oceans The greatest volume of volcanic rock is produced within oceanic ridges where seafloor spreading is active. Example; along the Mid Atlantic Ridge. Shield volcanoes are formed along ridges when basaltic lava flows on the ocean floor. In some case these volcanoes can rise above se ...
... 1) Beneath Oceans The greatest volume of volcanic rock is produced within oceanic ridges where seafloor spreading is active. Example; along the Mid Atlantic Ridge. Shield volcanoes are formed along ridges when basaltic lava flows on the ocean floor. In some case these volcanoes can rise above se ...
Metamorphic Rock Metamorphic rocks have been changed over
... Metamorphic rocks can be formed by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates. Uplift and erosion help bring metamorphic rock to the Earth's surface. Examples of metamorphic rocks include anthracite, qua ...
... Metamorphic rocks can be formed by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates. Uplift and erosion help bring metamorphic rock to the Earth's surface. Examples of metamorphic rocks include anthracite, qua ...
Chp 12.1- Evidence for Continental Drift
... • Hess suggested that MAGMA rose to form new rock at certain places. • Magma (melted rock) rises and falls like warm and cold liquids. • The convection currents of magma formed a SPREADING RIDGE where they broke through Earth’s crust. • Like a “new crust” CONVEYER BELT • Magnetic striping of basalt ...
... • Hess suggested that MAGMA rose to form new rock at certain places. • Magma (melted rock) rises and falls like warm and cold liquids. • The convection currents of magma formed a SPREADING RIDGE where they broke through Earth’s crust. • Like a “new crust” CONVEYER BELT • Magnetic striping of basalt ...
Powerpoint Presentation Physical Geology, 10/e
... Variety of igneous rocks is produced by variety of magma compositions Mafic magmas will crystallize into basalt or gabbro Intermediate magmas will similarly crystallize into diorite or andesite if minerals are not removed Minerals melt in the reverse order of that in which they crystallize from a ma ...
... Variety of igneous rocks is produced by variety of magma compositions Mafic magmas will crystallize into basalt or gabbro Intermediate magmas will similarly crystallize into diorite or andesite if minerals are not removed Minerals melt in the reverse order of that in which they crystallize from a ma ...
Geology 3263 Structural Geology Homework 1 Name Homework is
... 6. Pyroclastic materials that cool and solidify from lava ejected into the atmosphere are called _________. 5. When basaltic lava erupts beneath the sea, it forms a ________ structure. 6. A volcano with a composite cone has layers of _______ and layers of pyroclastic material within the cone. ...
... 6. Pyroclastic materials that cool and solidify from lava ejected into the atmosphere are called _________. 5. When basaltic lava erupts beneath the sea, it forms a ________ structure. 6. A volcano with a composite cone has layers of _______ and layers of pyroclastic material within the cone. ...
Geography A2 Revision PLATE TECTONICS AND ASSOCIATED
... >Hot Spot: A point on the surface of the earth located above a plume of rising magma. E.g. Hawaiian Islands. >Plate: Rigid slabs that float on the underlying semi-molten mantle (asthenosphere) and are moved by convection current within it. >Plate Tectonics: A theory that attempts to explain the form ...
... >Hot Spot: A point on the surface of the earth located above a plume of rising magma. E.g. Hawaiian Islands. >Plate: Rigid slabs that float on the underlying semi-molten mantle (asthenosphere) and are moved by convection current within it. >Plate Tectonics: A theory that attempts to explain the form ...
Igneous Geology - Earth Science Teachers` Association
... TASK 5 IGNEOUS ROCK COMPOSITION Define magma and lava. Magmas can be divided into four groups on the basis of composition. These are acid (silicic), intermediate, basic (mafic) and ultrabasic (ultramafic). How they are formed depends on processes in the crust and mantle which we will study later. Co ...
... TASK 5 IGNEOUS ROCK COMPOSITION Define magma and lava. Magmas can be divided into four groups on the basis of composition. These are acid (silicic), intermediate, basic (mafic) and ultrabasic (ultramafic). How they are formed depends on processes in the crust and mantle which we will study later. Co ...
Basalt
Basalt (pronounced /bəˈsɔːlt/, /ˈbæsɒlt/, /ˈbæsɔːlt/, or /ˈbeɪsɔːlt/)is a common extrusive igneous (volcanic) rock formed from the rapid cooling of basaltic lava exposed at or very near the surface of a planet or moon. Flood basalt describes the formation in a series of lava basalt flows.