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... 1. That the continents were once joined. Therefore, they must have moved apart over time. ...
... 1. That the continents were once joined. Therefore, they must have moved apart over time. ...
Continental Drift
... 1. That the continents were once joined. Therefore, they must have moved apart over time. ...
... 1. That the continents were once joined. Therefore, they must have moved apart over time. ...
Crust Solid surface, with great expanses of wate Mantle
... • Magma (liquid) comes up from mantle and cools to form new crust (solid rock) • Volcanic mountains form deep underwater • Extra heat at great depths provides home to many strange animals ...
... • Magma (liquid) comes up from mantle and cools to form new crust (solid rock) • Volcanic mountains form deep underwater • Extra heat at great depths provides home to many strange animals ...
The earths crust is separated into several tectonic plates
... Compare and contrast two plate margins you have studied to evaluate which is the most hazardous. (40). The earths crust is separated into several tectonic plates. Heating from the Earths core creates convection currents in the molten mantle this has the effect of causing the magma to rise when heate ...
... Compare and contrast two plate margins you have studied to evaluate which is the most hazardous. (40). The earths crust is separated into several tectonic plates. Heating from the Earths core creates convection currents in the molten mantle this has the effect of causing the magma to rise when heate ...
Plate tectonics
... Here you will see a map of the globe with the tectonic plate boundaries and the earthquakes from the last week. You can plot past earthquakes using the archive. Go back over as many weeks as you wish and create a list noting the magnitude (M) and depth of the earthquake’s source (D). Using the tecto ...
... Here you will see a map of the globe with the tectonic plate boundaries and the earthquakes from the last week. You can plot past earthquakes using the archive. Go back over as many weeks as you wish and create a list noting the magnitude (M) and depth of the earthquake’s source (D). Using the tecto ...
Unit 4 Notes
... amount or type of crust, but they can have effects on the landforms near them. -As the plates slide past one another, the pressure on those pieces increases, and when they separate, energy is suddenly released and earthquakes occur on the surface above the plate boundary. ...
... amount or type of crust, but they can have effects on the landforms near them. -As the plates slide past one another, the pressure on those pieces increases, and when they separate, energy is suddenly released and earthquakes occur on the surface above the plate boundary. ...
Lab 4-3: Sea-Floor Spreading
... • Sea-Floor Spreading: – Ocean crust is created at a divergent boundary as plates pull apart and molten material rises from deep within the Earth. ...
... • Sea-Floor Spreading: – Ocean crust is created at a divergent boundary as plates pull apart and molten material rises from deep within the Earth. ...
Directed Reading A
... ______ 2. The place where tectonic plates touch is known as the a. continental plate. c. magma zone. b. tectonic boundary. d. tectonic ridge. ______ 3. Which of the following is NOT a type of tectonic plate boundary? a. convergent boundary c. divergent boundary b. fault-block boundary d. transform b ...
... ______ 2. The place where tectonic plates touch is known as the a. continental plate. c. magma zone. b. tectonic boundary. d. tectonic ridge. ______ 3. Which of the following is NOT a type of tectonic plate boundary? a. convergent boundary c. divergent boundary b. fault-block boundary d. transform b ...
Part A: 15 points
... Part C: (10 points) Write a quality description of your project. Specifically, your description needs to include a justification for your material selection. In other words, why did you choose a particular material to represent a particular layer? What new and interesting fact did you learn about th ...
... Part C: (10 points) Write a quality description of your project. Specifically, your description needs to include a justification for your material selection. In other words, why did you choose a particular material to represent a particular layer? What new and interesting fact did you learn about th ...
Reading for Earth layers
... within the mantle allow for the movement of tectonic plates in the crust. The crust is a thin layer of cool rock. The crust is a solid, but it is divided into pieces known as tectonic plates. These plates move very slowly over time and this movement is responsible for many of the land features on Ea ...
... within the mantle allow for the movement of tectonic plates in the crust. The crust is a thin layer of cool rock. The crust is a solid, but it is divided into pieces known as tectonic plates. These plates move very slowly over time and this movement is responsible for many of the land features on Ea ...
plate - TeacherWeb
... in half. One can also find rift zones at divergent boundaries. When two plates move apart, it forms a rift, or crack, in the Earth’s crust. From this rift flows molten hot lava from beneath. This can result, over time, in a mountain range. When the molten lava flows from an underwater rift, it produ ...
... in half. One can also find rift zones at divergent boundaries. When two plates move apart, it forms a rift, or crack, in the Earth’s crust. From this rift flows molten hot lava from beneath. This can result, over time, in a mountain range. When the molten lava flows from an underwater rift, it produ ...
Name: Date: ______ Block:______ EARTH SYSTEMS QUIZ 1
... 35. Which two convergent boundaries can form a mountain? ...
... 35. Which two convergent boundaries can form a mountain? ...
Review: Ring of Fire and Earthquakes
... The area surrounding the Pacific Ocean is known as the Ring of Fire, because of the volcanoes that occur around its edges – mainly because of the type of plate boundary – subduction – we’ll learn more about that. ...
... The area surrounding the Pacific Ocean is known as the Ring of Fire, because of the volcanoes that occur around its edges – mainly because of the type of plate boundary – subduction – we’ll learn more about that. ...
Text Action - ESOL Online
... Volcanoes Text and Actions The Earth's crust, its hard top layer, is made of several pieces, called tectonic plates. The plates float on top of the mantle. They are always moving, because of convection currents. Where the plates collide or rub together they cause earthquakes and fold the crust into ...
... Volcanoes Text and Actions The Earth's crust, its hard top layer, is made of several pieces, called tectonic plates. The plates float on top of the mantle. They are always moving, because of convection currents. Where the plates collide or rub together they cause earthquakes and fold the crust into ...
chpt 17 continental drift
... • The theory of plate tectonics states that the lithosphere is divided into 12 large sections (plates) and about 20 smaller ones. • These plates ‘float’ on the more dense, fluid-like asthenosphere ...
... • The theory of plate tectonics states that the lithosphere is divided into 12 large sections (plates) and about 20 smaller ones. • These plates ‘float’ on the more dense, fluid-like asthenosphere ...
File
... 9. When divergent boundary happens (occur) a volcano can erupt and when the lava cools off mid ocean ridges are created. 9.2. What type of boundary creates mid ocean ridges? _____________________________________________________________________________________ ________________________________________ ...
... 9. When divergent boundary happens (occur) a volcano can erupt and when the lava cools off mid ocean ridges are created. 9.2. What type of boundary creates mid ocean ridges? _____________________________________________________________________________________ ________________________________________ ...
Create-a-Plate - WordPress.com
... continent which is a part of a tectonic plate. Then, add nearby tectonic plates that border one another so that the plates resemble (but are not exactly the same as!) the map of the Earth’s tectonic plates on p. 33 in your textbook. 2) Next, decide which direction each tectonic plate will be moving. ...
... continent which is a part of a tectonic plate. Then, add nearby tectonic plates that border one another so that the plates resemble (but are not exactly the same as!) the map of the Earth’s tectonic plates on p. 33 in your textbook. 2) Next, decide which direction each tectonic plate will be moving. ...
Expedition Worksheet
... By matching the reversal history to the magnetic patterns under the sea, and assuming seafloor spreading, the age of a particular piece of oceanic lithosphere could be determined The rigid, strong surface layer of the Earth is composed of the lithosphere (between 80 and 300 kilometers-thick), which ...
... By matching the reversal history to the magnetic patterns under the sea, and assuming seafloor spreading, the age of a particular piece of oceanic lithosphere could be determined The rigid, strong surface layer of the Earth is composed of the lithosphere (between 80 and 300 kilometers-thick), which ...
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.