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... about 3-5 miles (8 kilometers) thick under the oceans (oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust). The thickness can be from 5-100 km * The crust is less than 1% of the Earth’s mass. ...
... about 3-5 miles (8 kilometers) thick under the oceans (oceanic crust) and about 25 miles (32 kilometers) thick under the continents (continental crust). The thickness can be from 5-100 km * The crust is less than 1% of the Earth’s mass. ...
Plate Tectonics - isd194 cms .demo. ties .k12. mn .us
... • Watch this video to introduce the concept of Plate Tectonics ...
... • Watch this video to introduce the concept of Plate Tectonics ...
Landforms
... Fault Line • Fault lines are the points where the earths plates meet or lay against each other. • The movement of the earth along these lines produce earthquakes. Example: San Andreas Fault ...
... Fault Line • Fault lines are the points where the earths plates meet or lay against each other. • The movement of the earth along these lines produce earthquakes. Example: San Andreas Fault ...
3:n:1:di - EVA - Universidad de la República
... most of Earth's magmatic rocks, annually approximately 4 km3 of magmatic rocks are produced in intraplate settings. This intraplate magmatism is mostly related to hot spots (Fig. 1.5). Hot spots are point-sources of magma caused by mantle ...
... most of Earth's magmatic rocks, annually approximately 4 km3 of magmatic rocks are produced in intraplate settings. This intraplate magmatism is mostly related to hot spots (Fig. 1.5). Hot spots are point-sources of magma caused by mantle ...
STUDY TERMS FOR EXAM #1 BIO-102
... This is a list of terms I will assume you understand, by “understand” I mean understand what they are in terms of the lecture material (e.g., that methane is a greenhouse gas thought to be present in early atmosphere as well as now, NOT what its chemical formula is, etc. since that was not discussed ...
... This is a list of terms I will assume you understand, by “understand” I mean understand what they are in terms of the lecture material (e.g., that methane is a greenhouse gas thought to be present in early atmosphere as well as now, NOT what its chemical formula is, etc. since that was not discussed ...
Drillers propose deep-Earth quest By Jonathan Amos Science
... This spring, scientists will try to retrieve the deepest types of rock ever extracted from beneath the seabed. The drilling project is taking place off Costa Rica, and will attempt to reach some 2km under the ocean floor. Writing in the journal Nature, the scientists say their ultimate goal is to re ...
... This spring, scientists will try to retrieve the deepest types of rock ever extracted from beneath the seabed. The drilling project is taking place off Costa Rica, and will attempt to reach some 2km under the ocean floor. Writing in the journal Nature, the scientists say their ultimate goal is to re ...
Unit
... A topographical map is one that shows the physical features of the land. Besides just showing landforms such as mountains and rivers, the map also shows the elevation changes of the land. Elevation is shown using contour lines. ...
... A topographical map is one that shows the physical features of the land. Besides just showing landforms such as mountains and rivers, the map also shows the elevation changes of the land. Elevation is shown using contour lines. ...
Section 11.3
... Imagine a single plate, moving in one direction on Earth’s surface. One edge of the plate—the divergent boundary—moves away from things. The opposite edge—called the leading edge or convergent boundary bumps into anything in the way. ...
... Imagine a single plate, moving in one direction on Earth’s surface. One edge of the plate—the divergent boundary—moves away from things. The opposite edge—called the leading edge or convergent boundary bumps into anything in the way. ...
Earth Interior Ppt - www .alexandria .k12 .mn .us
... The Earth is composed of four different layers. The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The outer core and inner core are even hotter with pressures so ...
... The Earth is composed of four different layers. The crust is the layer that you live on, and it is the most widely studied and understood. The mantle is much hotter and has the ability to flow. The outer core and inner core are even hotter with pressures so ...
Plate boundaries
... All major interactions among individual plates occur along their boundaries Types of plate boundaries – Divergent plate boundaries (constructive margins) – Convergent plate boundaries (destructive margins) – Transform fault boundaries (conservative margins) ...
... All major interactions among individual plates occur along their boundaries Types of plate boundaries – Divergent plate boundaries (constructive margins) – Convergent plate boundaries (destructive margins) – Transform fault boundaries (conservative margins) ...
Mid Term Review Sample Questions
... Mid – Term Exam Review For Earth Science 1. What causes tectonic plates to move? _____________________________ 2. Where do volcanoes and earthquakes occur relative to plate boundaries? ______________________ 3. What probably caused the dinosaurs to go extinct? _____________________ 4. What is the co ...
... Mid – Term Exam Review For Earth Science 1. What causes tectonic plates to move? _____________________________ 2. Where do volcanoes and earthquakes occur relative to plate boundaries? ______________________ 3. What probably caused the dinosaurs to go extinct? _____________________ 4. What is the co ...
10-3 Directed Reading
... Section: The Changing Continents 1. What is the result of slow movements of tectonic plates? _______________________________________________________________ _______________________________________________________________ RESHAPING EARTH’S CRUST In the space provided, write the letter of the definiti ...
... Section: The Changing Continents 1. What is the result of slow movements of tectonic plates? _______________________________________________________________ _______________________________________________________________ RESHAPING EARTH’S CRUST In the space provided, write the letter of the definiti ...
Document
... Section: The Changing Continents 1. What is the result of slow movements of tectonic plates? _______________________________________________________________ _______________________________________________________________ RESHAPING EARTH’S CRUST In the space provided, write the letter of the definiti ...
... Section: The Changing Continents 1. What is the result of slow movements of tectonic plates? _______________________________________________________________ _______________________________________________________________ RESHAPING EARTH’S CRUST In the space provided, write the letter of the definiti ...
Geology 3015 Lecture Notes Week 4b
... geologic and biologic history. • Interaction of plates along their boundaries controls the distribution of most earthquakes and volcanoes as well as the formation of mountain ranges. • Geologists recognize three major types of plate boundaries based on their mode of interaction: divergent, convergen ...
... geologic and biologic history. • Interaction of plates along their boundaries controls the distribution of most earthquakes and volcanoes as well as the formation of mountain ranges. • Geologists recognize three major types of plate boundaries based on their mode of interaction: divergent, convergen ...
7.1 Inside the Earth
... Core extends from the bottom of the mantle to the center of Earth. C. Mars could fit into Earth’s core. "Journey to the Center of the Earth" A. ...
... Core extends from the bottom of the mantle to the center of Earth. C. Mars could fit into Earth’s core. "Journey to the Center of the Earth" A. ...
Divergent boundary
... East African Rift rift valley Example: _____________ Creates a __________. ...
... East African Rift rift valley Example: _____________ Creates a __________. ...
Unit 4 Lesson 6
... What causes tectonic plates to move? • The mechanism called ridge push suggests that as lithosphere sinks, the plates are pushed away from the mid-ocean ridge. • The crust along the mid-ocean ridge is less dense. As it cools, it becomes denser and sinks into the mantle, pulling it away from the ridg ...
... What causes tectonic plates to move? • The mechanism called ridge push suggests that as lithosphere sinks, the plates are pushed away from the mid-ocean ridge. • The crust along the mid-ocean ridge is less dense. As it cools, it becomes denser and sinks into the mantle, pulling it away from the ridg ...
Document
... Plate tectonics on a flat earth: Three plates • Plates A and B are spreading away at a half-rate of 2 cm yr-1. • The boundary between between plates A and C is a transform fault with a relative motion of 3 cm yr-1. • Again, to determine the relative rate between plate B and C we use ...
... Plate tectonics on a flat earth: Three plates • Plates A and B are spreading away at a half-rate of 2 cm yr-1. • The boundary between between plates A and C is a transform fault with a relative motion of 3 cm yr-1. • Again, to determine the relative rate between plate B and C we use ...
Outline General Geology 2011
... This Course focuses on the basic concepts and principles in Earth Science and oceanography. It introduces the student to the properties and characteristics of minerals and rocks, the processes and forces within that shape the earth. ...
... This Course focuses on the basic concepts and principles in Earth Science and oceanography. It introduces the student to the properties and characteristics of minerals and rocks, the processes and forces within that shape the earth. ...
Plate Tectonics
... He was a German geophysicist remembered most for his theory of continental drift. His theory stated continents are slowly drifting around the Earth and was not accepted at the time. ...
... He was a German geophysicist remembered most for his theory of continental drift. His theory stated continents are slowly drifting around the Earth and was not accepted at the time. ...
Chapter 7 Earth`s Structure What are columns of steaming hot water
... Similarities: Both are features found on the ocean floor at plate boundaries. Differences: Ocean trenches are found where plates converge. Ocean ridges are found where plates diverge. 35. Why is the Pacific rim a region of earthquakes and active volcanoes? Converging plate boundaries form the Ring ...
... Similarities: Both are features found on the ocean floor at plate boundaries. Differences: Ocean trenches are found where plates converge. Ocean ridges are found where plates diverge. 35. Why is the Pacific rim a region of earthquakes and active volcanoes? Converging plate boundaries form the Ring ...
Earth`s Interior - Poster Project
... Students are responsible for creating an informational poster about the layers of the Earth. The purpose is to identify the Earth’s layers and describe their physical characteristics (i.e. thickness, viscosity, temperature, etc.). Students are expected to successfully present information in a clear, ...
... Students are responsible for creating an informational poster about the layers of the Earth. The purpose is to identify the Earth’s layers and describe their physical characteristics (i.e. thickness, viscosity, temperature, etc.). Students are expected to successfully present information in a clear, ...
Plate tectonics
Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός ""pertaining to building"") is a scientific theory that describes the large-scale motion of Earth's lithosphere. This theoretical model builds on the concept of continental drift which was developed during the first few decades of the 20th century. The geoscientific community accepted the theory after the concepts of seafloor spreading were later developed in the late 1950s and early 1960s.The lithosphere, which is the rigid outermost shell of a planet (on Earth, the crust and upper mantle), is broken up into tectonic plates. On Earth, there are seven or eight major plates (depending on how they are defined) and many minor plates. Where plates meet, their relative motion determines the type of boundary; convergent, divergent, or transform. Earthquakes, volcanic activity, mountain-building, and oceanic trench formation occur along these plate boundaries. The lateral relative movement of the plates typically varies from zero to 100 mm annually.Tectonic plates are composed of oceanic lithosphere and thicker continental lithosphere, each topped by its own kind of crust. Along convergent boundaries, subduction carries plates into the mantle; the material lost is roughly balanced by the formation of new (oceanic) crust along divergent margins by seafloor spreading. In this way, the total surface of the globe remains the same. This prediction of plate tectonics is also referred to as the conveyor belt principle. Earlier theories (that still have some supporters) propose gradual shrinking (contraction) or gradual expansion of the globe.Tectonic plates are able to move because the Earth's lithosphere has greater strength than the underlying asthenosphere. Lateral density variations in the mantle result in convection. Plate movement is thought to be driven by a combination of the motion of the seafloor away from the spreading ridge (due to variations in topography and density of the crust, which result in differences in gravitational forces) and drag, with downward suction, at the subduction zones. Another explanation lies in the different forces generated by the rotation of the globe and the tidal forces of the Sun and Moon. The relative importance of each of these factors and their relationship to each other is unclear, and still the subject of much debate.