Chapter Four – Earth Science
... • Below the crust is the Mantle. This is a hot layer of rock. The crust and the uppermost part of the mantle together form the lithosphere. Beneath the lithosphere is a softer layer called the asthenosphere. ...
... • Below the crust is the Mantle. This is a hot layer of rock. The crust and the uppermost part of the mantle together form the lithosphere. Beneath the lithosphere is a softer layer called the asthenosphere. ...
Earth Crust in Motion Vocbaulary (Aca).doc
... drifted to their current locations Fault – breaks in Earth’s crust where rocks have slipped past each other Shearing – the lateral movement of one rock surface against another; caused by intense pressure along plate boundaries Folded Mountains – mountains formed when two plates hit each other straig ...
... drifted to their current locations Fault – breaks in Earth’s crust where rocks have slipped past each other Shearing – the lateral movement of one rock surface against another; caused by intense pressure along plate boundaries Folded Mountains – mountains formed when two plates hit each other straig ...
Chapter 5 Plate Tectonics: A Scientific Theory Unfolds
... – When two oceanic slabs converge, one descends beneath the other – Often forms volcanoes on the ocean floor – If the volcanoes emerge as islands, a volcanic island arc is formed (Japan, Aleutian islands, Tonga islands) ...
... – When two oceanic slabs converge, one descends beneath the other – Often forms volcanoes on the ocean floor – If the volcanoes emerge as islands, a volcanic island arc is formed (Japan, Aleutian islands, Tonga islands) ...
Plate Boundaries - Effingham County Schools
... of giant pieces of rock that “float” on top of the mantle. • The plates move slowly across Earth’s surface (About 10cm per year). • These plates moving are called Plate Tectonics. ...
... of giant pieces of rock that “float” on top of the mantle. • The plates move slowly across Earth’s surface (About 10cm per year). • These plates moving are called Plate Tectonics. ...
Chapter 9 Class Notes
... explains how plates and their continents move. Wegener’s theory and sea floor maps were used to develop the theory of plate tectonics. Along spreading centers in the sea floor, melted rock rises through cracks, cools, and forms new crust that builds up mid-ocean ridges. ...
... explains how plates and their continents move. Wegener’s theory and sea floor maps were used to develop the theory of plate tectonics. Along spreading centers in the sea floor, melted rock rises through cracks, cools, and forms new crust that builds up mid-ocean ridges. ...
Inside Earth Unit Study Guide
... 9. What is the driving force of plate movement? 10. What is Pangaea? 11. What are the three types of plate boundaries? 12. List all of the sub-types of plate boundaries and some features of each. 13. Give an example of where each plate boundary occurs. 14. What is paleomagnetism and what does it hav ...
... 9. What is the driving force of plate movement? 10. What is Pangaea? 11. What are the three types of plate boundaries? 12. List all of the sub-types of plate boundaries and some features of each. 13. Give an example of where each plate boundary occurs. 14. What is paleomagnetism and what does it hav ...
From the Beginning The earth and the whole universe were formed
... we know today were once grouped together as one large land mass known as _________________________. Approximately 180 million years ago it began to split up. Continents are part of large plates of rock that move like _________________________ over the mantle. This movement is known as plate tectonic ...
... we know today were once grouped together as one large land mass known as _________________________. Approximately 180 million years ago it began to split up. Continents are part of large plates of rock that move like _________________________ over the mantle. This movement is known as plate tectonic ...
Notes over Plates
... • http://geology.com/plate-tectonics.shtml • Top down drawing of area • Can you identify any other places on Earth? ...
... • http://geology.com/plate-tectonics.shtml • Top down drawing of area • Can you identify any other places on Earth? ...
What evidence did Alfred Wagner use to support his theory of
... The both occur where continental plates collide or meet. How old are the rocks off the east coast of North America relative to the rocks right along the mid Atlantic ridge, why do you think this is the case? The age of rocks increases as they move away from the ridge. The youngest rocks are closest ...
... The both occur where continental plates collide or meet. How old are the rocks off the east coast of North America relative to the rocks right along the mid Atlantic ridge, why do you think this is the case? The age of rocks increases as they move away from the ridge. The youngest rocks are closest ...
Plate Tectonics Chapter Challenge sample
... seafloor. As the lithospheric plates continue to diverge over time, the new seafloor moves further away from the ridge and cools. As it cools, it becomes more dense and sinks back into the mantle, where it is heated and rises again. This pattern of heating and rising, cooling and sinking in Earth’s ...
... seafloor. As the lithospheric plates continue to diverge over time, the new seafloor moves further away from the ridge and cools. As it cools, it becomes more dense and sinks back into the mantle, where it is heated and rises again. This pattern of heating and rising, cooling and sinking in Earth’s ...
Plate Tectonics and Deformation of the Crust
... time for glaciers to form in a tropical region because at the same time the Northern Hemisphere consisted of tropical swamps. ...
... time for glaciers to form in a tropical region because at the same time the Northern Hemisphere consisted of tropical swamps. ...
plate tectonics - Science with Ms. Reathaford!
... movement of heated matter is called convection. The heating of matter causes it to expand and decrease in density. As it warms, it rises (buoyancy). The cooler part then sinks (gravity). This up and down pattern is a convection current. In the mantle, convection currents are set in motion by the tra ...
... movement of heated matter is called convection. The heating of matter causes it to expand and decrease in density. As it warms, it rises (buoyancy). The cooler part then sinks (gravity). This up and down pattern is a convection current. In the mantle, convection currents are set in motion by the tra ...
sample 7 - msaldrichscience
... ridges are common because of movement along the transform faults that connect segments of the ridge crest. In subduction zones it happens at depths that are very shallow or near the trench. Hot spots originate the boundary between the mantle and the outer core, they are narrow plumes of unusually ho ...
... ridges are common because of movement along the transform faults that connect segments of the ridge crest. In subduction zones it happens at depths that are very shallow or near the trench. Hot spots originate the boundary between the mantle and the outer core, they are narrow plumes of unusually ho ...
3/15 Lesson 15 Investigating plate movement and faults pg
... This theory states that plates move away from mid-ocean ridges causing new land to form, and old land moves toward ocean trenches and sinks into the earth. Mountain chains of volcanic islands, such as Japan, form along trenches, where events such as earthquakes and volcanoes occur. The theory of pl ...
... This theory states that plates move away from mid-ocean ridges causing new land to form, and old land moves toward ocean trenches and sinks into the earth. Mountain chains of volcanic islands, such as Japan, form along trenches, where events such as earthquakes and volcanoes occur. The theory of pl ...
Plate Tectonics
... There are three kinds of plate boundaries: 1. divergent boundaries – when the plates slide apart and create a rift 2. convergent boundaries – two plates collide 3. transform boundaries – when two plates slide past each other A different type of plate movement occurs along each type of boundary. ...
... There are three kinds of plate boundaries: 1. divergent boundaries – when the plates slide apart and create a rift 2. convergent boundaries – two plates collide 3. transform boundaries – when two plates slide past each other A different type of plate movement occurs along each type of boundary. ...
Plate Tectonics
... There are three kinds of plate boundaries: 1. divergent boundaries – when the plates slide apart and create a rift 2. convergent boundaries – two plates collide 3. transform boundaries – when two plates slide past each other A different type of plate movement occurs along each type of boundary. ...
... There are three kinds of plate boundaries: 1. divergent boundaries – when the plates slide apart and create a rift 2. convergent boundaries – two plates collide 3. transform boundaries – when two plates slide past each other A different type of plate movement occurs along each type of boundary. ...
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.