0004_EarthProcesses
... Continental Drift: a theory ahead of its time • impossible for a large mass of solid rock to plow through the ocean floor without breaking up • mid 20th Century, new evidence from ocean floor exploration rekindled interest in Wegener's theory, ultimately leading to theory of plate tectonics. ...
... Continental Drift: a theory ahead of its time • impossible for a large mass of solid rock to plow through the ocean floor without breaking up • mid 20th Century, new evidence from ocean floor exploration rekindled interest in Wegener's theory, ultimately leading to theory of plate tectonics. ...
Plate Tectonics A . Alfred Wegner 1. Continental drift hypothesis a
... 2. Oceanic ridge – seafloor that is elevated along well developed divergent boundaries 3. Rift valleys – deep faulted structures found along the axes of some segments 4. Seafloor spreading – The process in which the ocean floor is extended when two plates move apart, forming a ...
... 2. Oceanic ridge – seafloor that is elevated along well developed divergent boundaries 3. Rift valleys – deep faulted structures found along the axes of some segments 4. Seafloor spreading – The process in which the ocean floor is extended when two plates move apart, forming a ...
Key Plate Tectonics Terminology (earthquakes and volcanoes)
... Mantle: The main bulk of the Earth, between the crust and core, ranging from depths of about 40 to 3480 kilometers. It is composed of dense mafic silicates and divided into concentric layers by phase changes that are caused by the increase in pressure with depth. P-wave: The primary or fastest wave ...
... Mantle: The main bulk of the Earth, between the crust and core, ranging from depths of about 40 to 3480 kilometers. It is composed of dense mafic silicates and divided into concentric layers by phase changes that are caused by the increase in pressure with depth. P-wave: The primary or fastest wave ...
Plate Tectonics
... sliding past each crashing, sea floor spreading other,↑↓, strikesubduction zone newest sea floor slip, earthquakes Features created at each boundary include: Mountains, Mid-ocean ridges, Hawaiian Islands were not Volcanoes, Trenches, Rift valleys & created by plate movement Pangaea…one landmass ...
... sliding past each crashing, sea floor spreading other,↑↓, strikesubduction zone newest sea floor slip, earthquakes Features created at each boundary include: Mountains, Mid-ocean ridges, Hawaiian Islands were not Volcanoes, Trenches, Rift valleys & created by plate movement Pangaea…one landmass ...
Plate Boundaries
... The Mantle The Earth’s mantle is a layer below the crust that descends to 2900 km below the surface. ...
... The Mantle The Earth’s mantle is a layer below the crust that descends to 2900 km below the surface. ...
Sequencing Activity
... Note to the teacher. Cut the text into strips and give to pairs of students to sequence. The students place the text into the text box. Step 1 has been given. Alternatively, students could write the sentences in the text boxes as the text is already in jumbled order. -------------------------------- ...
... Note to the teacher. Cut the text into strips and give to pairs of students to sequence. The students place the text into the text box. Step 1 has been given. Alternatively, students could write the sentences in the text boxes as the text is already in jumbled order. -------------------------------- ...
Types of Rock - Teacher Bulletin
... • Rocks can be organized into three groups: – Igneous – Sedimentary – Metamorphic ...
... • Rocks can be organized into three groups: – Igneous – Sedimentary – Metamorphic ...
Plate tectonics
... older rocks were farther from the ridge center and cooled as they moved outward. ...
... older rocks were farther from the ridge center and cooled as they moved outward. ...
Continental Drift Theory and Plate Tectonics
... • According to scientists, how does lava get to the ocean floor? • How do scientists explain why ocean floor is older farther away from the mid ocean ridge? ...
... • According to scientists, how does lava get to the ocean floor? • How do scientists explain why ocean floor is older farther away from the mid ocean ridge? ...
Plate Tectonics - Nutley Public Schools
... travels to the Mantle and rises since it is less dense than the cooler material at the top of the mantle. The cooler material is more dense so it sinks. This cycle repeats itself and is known as a convection current. (Think of our Boiling pot of water or our Convection experiment with the bottle and ...
... travels to the Mantle and rises since it is less dense than the cooler material at the top of the mantle. The cooler material is more dense so it sinks. This cycle repeats itself and is known as a convection current. (Think of our Boiling pot of water or our Convection experiment with the bottle and ...
4 layers of Earth and Plate Activity notes
... spreading zone. • When plates move apart, it creates cracks in the Earth called rift valley • Allows hot, melted rock to come up through the cracks volcano opening is formed • Sea floor spreading- new sea floor created • http://geology.com/nsta/divergent-boundaryoceanic.gif ...
... spreading zone. • When plates move apart, it creates cracks in the Earth called rift valley • Allows hot, melted rock to come up through the cracks volcano opening is formed • Sea floor spreading- new sea floor created • http://geology.com/nsta/divergent-boundaryoceanic.gif ...
Section Review
... 8. Explain how scientists know about the structure of the Earth’s interior. _______________________________________________________________ _______________________________________________________________ INTERPRETING GRAPHICS ...
... 8. Explain how scientists know about the structure of the Earth’s interior. _______________________________________________________________ _______________________________________________________________ INTERPRETING GRAPHICS ...
Theory of plate tect
... • Plates move at an extremely slow rate, 110 cm/year • North American & European plate are moving apart at about the same rate as ...
... • Plates move at an extremely slow rate, 110 cm/year • North American & European plate are moving apart at about the same rate as ...
Earth structure
... The crust is made of about twelve plates. These are like big rafts floating on the semi-molten mantle. Convection currents within the mantle cause the plates to move. Although they only move about 2 cm/year this can have huge effects over long periods of time. ...
... The crust is made of about twelve plates. These are like big rafts floating on the semi-molten mantle. Convection currents within the mantle cause the plates to move. Although they only move about 2 cm/year this can have huge effects over long periods of time. ...
Convection current
... • Sea-Floor Spreading- the process by which molten material adds new oceanic crust to the ocean floor. • The sea floor spreads apart along both sides of a mid-ocean ridge (divergent boundary), as new crust is added. ...
... • Sea-Floor Spreading- the process by which molten material adds new oceanic crust to the ocean floor. • The sea floor spreads apart along both sides of a mid-ocean ridge (divergent boundary), as new crust is added. ...
Plate tectonics and the distribution of volcanoes| sample
... Molten rocks (magma) from the mantle forces its way through weakness in the crust (faults, plate boundaries and rifts) towards the surface because of plate tectonics (convection currents). The earth is covered in a thin, solid crust. The lithosphere is broken into 16 major slabs called plates. Plate ...
... Molten rocks (magma) from the mantle forces its way through weakness in the crust (faults, plate boundaries and rifts) towards the surface because of plate tectonics (convection currents). The earth is covered in a thin, solid crust. The lithosphere is broken into 16 major slabs called plates. Plate ...
Plate Tectonics
... class, competing for points or the teacher comes up with questions in the same manner as shown below 1. Do plates move horizontally, vertically, or both?_________________ ...
... class, competing for points or the teacher comes up with questions in the same manner as shown below 1. Do plates move horizontally, vertically, or both?_________________ ...
Evidence for Continental Drift
... • Magma (molten rock) from beneath the Earth’s surface rises because it is less dense than the material that surrounds it. • The magma cools and hardens when it breaks through Earth’s surface at a spreading ridge forming new sea floor. ...
... • Magma (molten rock) from beneath the Earth’s surface rises because it is less dense than the material that surrounds it. • The magma cools and hardens when it breaks through Earth’s surface at a spreading ridge forming new sea floor. ...
Forces that Shape the Earth State Objectives 4.a.
... oceanic plate is forced below the less dense continental plate Oceanic plate melts as it pushes into the mantle forcing hot magma & gas up to the surface of the continent. Forms a deep-ocean trench & a long chain of continental ____________________. Ex. _________________ mountains of South Ame ...
... oceanic plate is forced below the less dense continental plate Oceanic plate melts as it pushes into the mantle forcing hot magma & gas up to the surface of the continent. Forms a deep-ocean trench & a long chain of continental ____________________. Ex. _________________ mountains of South Ame ...
Layers of the Earth - study notes
... Most of the earthquakes and volcanoes in the world occur where two plates meet. The most active area of volcanoes and earthquakes is called the Ring of Fire. It circles around the Pacific Ocean. The Atlantic Ocean is growing because the Mid Atlantic Ridge continues to separate. Magma seeps up ...
... Most of the earthquakes and volcanoes in the world occur where two plates meet. The most active area of volcanoes and earthquakes is called the Ring of Fire. It circles around the Pacific Ocean. The Atlantic Ocean is growing because the Mid Atlantic Ridge continues to separate. Magma seeps up ...
Large igneous province
A large igneous province (LIP) is an extremely large accumulation of igneous rocks, including liquid rock (intrusive) or volcanic rock formations (extrusive), when hot magma extrudes from inside the Earth and flows out. The source of many or all LIPs is variously attributed to mantle plumes or to processes associated with plate tectonics. Types of LIPs can include large volcanic provinces (LVP), created through flood basalt and large plutonic provinces (LPP). Eleven distinct flood basalt episodes occurred in the past 250 million years, creating volcanic provinces, which coincided with mass extinctions in prehistoric times. Formation depends on a range of factors, such as continental configuration, latitude, volume, rate, duration of eruption, style and setting (continental vs. oceanic), the preexisting climate state, and the biota resilience to change.