Topic VI: The Dynamic Earth
... Earthquakes: a sudden shaking or trembling of rock layers along a fault line or plate boundary (the rock layers slip) ...
... Earthquakes: a sudden shaking or trembling of rock layers along a fault line or plate boundary (the rock layers slip) ...
Sea-Floor Spreading Lab
... increased. New crust is being created along the divergent plate boundaries and forcing the older crust towards the coastlines. The observation of the oldest crust being far from the boundary and the newest crust being right along it supports the idea that the plates are diverging. These two pieces o ...
... increased. New crust is being created along the divergent plate boundaries and forcing the older crust towards the coastlines. The observation of the oldest crust being far from the boundary and the newest crust being right along it supports the idea that the plates are diverging. These two pieces o ...
Answers - MrTubb
... 5. Lithospheric plates the size of continents and oceans are constantly moving as a result of activity in the Earth's mantle. Approximately how fast do these plates move? A. a few meters per year B. a few kilometers per year C. a few centimeters per year D. a few hundred kilometers per year ...
... 5. Lithospheric plates the size of continents and oceans are constantly moving as a result of activity in the Earth's mantle. Approximately how fast do these plates move? A. a few meters per year B. a few kilometers per year C. a few centimeters per year D. a few hundred kilometers per year ...
science questions
... The tallest mountain chain is the Himalaya’s. This Asian chain includes the highest peak on Earth, Mount Everest. The Himalayas include more than one hundred peaks over 7,200 m high. The range extends over 2,400 km and was formed from the subduction of the Indian tectonic plate under the Eurasian pl ...
... The tallest mountain chain is the Himalaya’s. This Asian chain includes the highest peak on Earth, Mount Everest. The Himalayas include more than one hundred peaks over 7,200 m high. The range extends over 2,400 km and was formed from the subduction of the Indian tectonic plate under the Eurasian pl ...
Earth Systems - Northwest ISD Moodle
... • Hawaiian islands are an example of how land can form over hot spots due to volcanic eruption • Geologically, this is how all land originally formed • The eruption and cooling of molten lava ...
... • Hawaiian islands are an example of how land can form over hot spots due to volcanic eruption • Geologically, this is how all land originally formed • The eruption and cooling of molten lava ...
Plate Tectonic Unit Test Review
... ____ 14. According to Figure 4F-1, what type of plate boundary occurs between the North American Plate and the Eurasian Plate? a. transform boundary b. divergent boundary c. convergent oceanic-continental plate boundary d. convergent oceanic-oceanic plate boundary ____ 15. According to Figure 4F-1, ...
... ____ 14. According to Figure 4F-1, what type of plate boundary occurs between the North American Plate and the Eurasian Plate? a. transform boundary b. divergent boundary c. convergent oceanic-continental plate boundary d. convergent oceanic-oceanic plate boundary ____ 15. According to Figure 4F-1, ...
![c1b revision sheet 1[1]](http://s1.studyres.com/store/data/016683336_1-baea0f7acdab057d50ded8ac95b62330-300x300.png)
c1b revision sheet 1[1]
... Supercontinent of Pangaea - 250 million years ago 100 million years ago - Pangaea split into 2. The land continued to move until 50 million years ago. Continents move a few cm’s every year. ...
... Supercontinent of Pangaea - 250 million years ago 100 million years ago - Pangaea split into 2. The land continued to move until 50 million years ago. Continents move a few cm’s every year. ...
Ridge Push - ClassZone
... mid-ocean ridge. However, as the newly formed rock ages and cools, it becomes more dense. Gravity then causes this older, denser lithosphere to slide away from the ridge, down the sloping asthenosphere. As the older, denser lithosphere slides away, new molten magma wells up at the mid-ocean ridge, e ...
... mid-ocean ridge. However, as the newly formed rock ages and cools, it becomes more dense. Gravity then causes this older, denser lithosphere to slide away from the ridge, down the sloping asthenosphere. As the older, denser lithosphere slides away, new molten magma wells up at the mid-ocean ridge, e ...
john_baross_geoscience_definitionsx
... cyanobacteria); particularly common in the Precambrian, and one of the earliest signs of the presence of life on earth. Subduction: The process by which a plate, always one consisting of oceanic crust, is dragged under the adjoining plate; subduction compensates for the continuous creation of new oc ...
... cyanobacteria); particularly common in the Precambrian, and one of the earliest signs of the presence of life on earth. Subduction: The process by which a plate, always one consisting of oceanic crust, is dragged under the adjoining plate; subduction compensates for the continuous creation of new oc ...
Plate Tectonics Diagram Questions
... 4. It is estimated that 90% of the world’s earthquakes occur along the Ring of Fire. Describe the boundary interactions that occur in this region and why the occurrence of earthquakes is so high. _There are convergent boundaries all around the Pacific Ocean where subduction zones occur. When the pl ...
... 4. It is estimated that 90% of the world’s earthquakes occur along the Ring of Fire. Describe the boundary interactions that occur in this region and why the occurrence of earthquakes is so high. _There are convergent boundaries all around the Pacific Ocean where subduction zones occur. When the pl ...
Earth`s Crust in Motion
... 27. Where does the heat come from that drives this convection current in the mantle? The heat that drives the convection current in the mantle comes from Earth’s core & from the mantle itself 28. Where is the temperature of the mantle material greater, at point A or point C? Explain why. The tempera ...
... 27. Where does the heat come from that drives this convection current in the mantle? The heat that drives the convection current in the mantle comes from Earth’s core & from the mantle itself 28. Where is the temperature of the mantle material greater, at point A or point C? Explain why. The tempera ...
review materials about plate tectonics
... 3. This site has several maps that are like the one in the picture in #2 on the previous page of this doc. http://www.iris.edu/hq/files/programs/education_and_outreach/aotm/14/1.GPS_Background.pdf 4. You know how I like science info! Here’s a recent scientific article that is titled “Earth's tecton ...
... 3. This site has several maps that are like the one in the picture in #2 on the previous page of this doc. http://www.iris.edu/hq/files/programs/education_and_outreach/aotm/14/1.GPS_Background.pdf 4. You know how I like science info! Here’s a recent scientific article that is titled “Earth's tecton ...
4 Lithosphere Research
... bar. There you will find several links on Earth’s layers, use these links to fill out the worksheet. 1. Please indicate the following information on the Earth’s layers. Layer Thickness Composition (what it’s made of) Crust Mantel Outer Core Inner Core ...
... bar. There you will find several links on Earth’s layers, use these links to fill out the worksheet. 1. Please indicate the following information on the Earth’s layers. Layer Thickness Composition (what it’s made of) Crust Mantel Outer Core Inner Core ...
Palaeontology, Pangaea, Plate Tectoncs
... crust below the oceans is basaltic, apart from local occurrences of extended continental crust adjacent to continents. However, abundant samples of continental material, some as old as Precambrian - Palaeozoic, have been cored and dredged from deep oceans (see compilations by Vasiliev & Yano, 2007; ...
... crust below the oceans is basaltic, apart from local occurrences of extended continental crust adjacent to continents. However, abundant samples of continental material, some as old as Precambrian - Palaeozoic, have been cored and dredged from deep oceans (see compilations by Vasiliev & Yano, 2007; ...
6th - inside earth study guide1
... compass – an instrument composed of a small, light-weight magnet called a needle, that is balanced on a frictionless bearing continental drift – the hypothesis that the continents slowly move across the Earth’s surface sea-floor spreading – the process by which molten material adds new crust to the ...
... compass – an instrument composed of a small, light-weight magnet called a needle, that is balanced on a frictionless bearing continental drift – the hypothesis that the continents slowly move across the Earth’s surface sea-floor spreading – the process by which molten material adds new crust to the ...
Inside Earth Test Study Guide
... compass – an instrument composed of a small, light-weight magnet called a needle, that is balanced on a frictionless bearing continental drift – the hypothesis that the continents slowly move across the Earth’s surface sea-floor spreading – the process by which molten material adds new crust to the ...
... compass – an instrument composed of a small, light-weight magnet called a needle, that is balanced on a frictionless bearing continental drift – the hypothesis that the continents slowly move across the Earth’s surface sea-floor spreading – the process by which molten material adds new crust to the ...
Key concepts
... Key terms density crust granite basalt mantle core lithosphere asthenosphere mesosphere (lower mantle) outer core inner core convection conduction Alfred Wegener continental drift Pangea seafloor Spreading subduction zones Plate Tectonics divergent plate boundary convergent plate boundary transform ...
... Key terms density crust granite basalt mantle core lithosphere asthenosphere mesosphere (lower mantle) outer core inner core convection conduction Alfred Wegener continental drift Pangea seafloor Spreading subduction zones Plate Tectonics divergent plate boundary convergent plate boundary transform ...
Chapter 12- section 1- Volcanoes and Earth`s moving
... They form from magma that reaches the surface of the Earth. Vent- the opening in the Earth that allows the magma to flow out. A crater- the steep walled depression around the volcano’s vent. ...
... They form from magma that reaches the surface of the Earth. Vent- the opening in the Earth that allows the magma to flow out. A crater- the steep walled depression around the volcano’s vent. ...
On page of your notebook create the following chart.
... Weathering: The wearing down of rocks at the Earth’s surface by the actions of wind, water, ice, and living things is referred to as weathering. Water, for example, expands when it freezes. Water may seep into cracks or pores in rocks and expand these cracks if the temperature drops and the water fr ...
... Weathering: The wearing down of rocks at the Earth’s surface by the actions of wind, water, ice, and living things is referred to as weathering. Water, for example, expands when it freezes. Water may seep into cracks or pores in rocks and expand these cracks if the temperature drops and the water fr ...
Plate Tectonics Internet Scavenger Hunt
... 47. How fast is the Pacific Plate moving away from the Nazca plate? (In a year) ...
... 47. How fast is the Pacific Plate moving away from the Nazca plate? (In a year) ...
Lecture 1 Plate Tectonics
... A series of rocks that contains slices of oceanic crust welded to the continental crust ...
... A series of rocks that contains slices of oceanic crust welded to the continental crust ...
Plate Motions
... These seven plates comprise the bulk of the Earth’s Lithosphere: Pacific Ocean. African Plate Antarctic Plate Eurasian Plate Indo-Australian Plate North American Plate Pacific Plate South American Plate ...
... These seven plates comprise the bulk of the Earth’s Lithosphere: Pacific Ocean. African Plate Antarctic Plate Eurasian Plate Indo-Australian Plate North American Plate Pacific Plate South American Plate ...
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.