Chapter405.ppt
... • This happens when the sea floor that lies between them is subducted, and the ocean becomes narrower and narrower until it is all gone and the continents, which as we’ve learned cannot subduct, collide with each other. • One continent may slide a short distance beneath another, but it will not go d ...
... • This happens when the sea floor that lies between them is subducted, and the ocean becomes narrower and narrower until it is all gone and the continents, which as we’ve learned cannot subduct, collide with each other. • One continent may slide a short distance beneath another, but it will not go d ...
pdf - University of California, Berkeley
... obvious, it resurfaced much of northern Nevada, Idaho, and Wyoming over the last several million years in basalt through a series of massive volcanic eruptions. Then there were the tremendous supervolcanic explosions, which coated much of the western U.S. in thick blankets of ash and made the Yellow ...
... obvious, it resurfaced much of northern Nevada, Idaho, and Wyoming over the last several million years in basalt through a series of massive volcanic eruptions. Then there were the tremendous supervolcanic explosions, which coated much of the western U.S. in thick blankets of ash and made the Yellow ...
Practice Questions: Earth`s Interior
... density decreases and temperature decreases density decreases and temperature increases density increases and temperature increases density increases and temperature decreases ...
... density decreases and temperature decreases density decreases and temperature increases density increases and temperature increases density increases and temperature decreases ...
molten rock inside the earth`s surface the process of breaking rock
... According to theory, this was the “supercontinent” that contained all of Earth’s land about 225 million years ago ...
... According to theory, this was the “supercontinent” that contained all of Earth’s land about 225 million years ago ...
Rocks, Rock Cycle and Layers of the Earth Review
... Rocks, Rock Cycle and Layers of the Earth Review ...
... Rocks, Rock Cycle and Layers of the Earth Review ...
9.21.15 Plate Tectonic Theory PPT
... crust and hardens into solid rock, forming new crust on the torn edges of the plates. At divergent boundaries, lava cools into basalt, a dark, dense rock that underlies the ocean floor. When two plates come together, it is known as a convergent boundary. The impact of the two colliding plates can cr ...
... crust and hardens into solid rock, forming new crust on the torn edges of the plates. At divergent boundaries, lava cools into basalt, a dark, dense rock that underlies the ocean floor. When two plates come together, it is known as a convergent boundary. The impact of the two colliding plates can cr ...
tectonic plates.
... – The collision of India into Asia 50 million years ago caused the Eurasian Plate to crumple up and override the Indian Plate. After the collision, the slow continuous convergence of the two plates over millions of years pushed up the Himalayas and the Tibetan Plateau to their present heights. – Mos ...
... – The collision of India into Asia 50 million years ago caused the Eurasian Plate to crumple up and override the Indian Plate. After the collision, the slow continuous convergence of the two plates over millions of years pushed up the Himalayas and the Tibetan Plateau to their present heights. – Mos ...
Plate Tectonics and Building a Volcano
... 1. Explain subduction (when one plate goes under another) and spreading center (when plates move away from each other) c. Now look at map “b” i. What is this map showing? (Tectonic plates and active volcanoes) ii. Is there a connection between plate boundaries and active volcanoes? (Volcanoes tend t ...
... 1. Explain subduction (when one plate goes under another) and spreading center (when plates move away from each other) c. Now look at map “b” i. What is this map showing? (Tectonic plates and active volcanoes) ii. Is there a connection between plate boundaries and active volcanoes? (Volcanoes tend t ...
File
... The thickest layer of the Earth. Made up of silicon, magnesium and iron Lithosphere: the crust and top of the mantle Asthenosphere: below the lithosphere, the upper mantle –Made up of plastic-like rock that flows and causes plates to move • is the mantle liquid? (start at 3:24) ...
... The thickest layer of the Earth. Made up of silicon, magnesium and iron Lithosphere: the crust and top of the mantle Asthenosphere: below the lithosphere, the upper mantle –Made up of plastic-like rock that flows and causes plates to move • is the mantle liquid? (start at 3:24) ...
File
... Why is molten magma rising to the surface at divergent plate boundaries? A. because it is more dense than the hotter rock around it B. because it is affected by anti-gravity C. because it is less dense than the cooler rock surrounding ...
... Why is molten magma rising to the surface at divergent plate boundaries? A. because it is more dense than the hotter rock around it B. because it is affected by anti-gravity C. because it is less dense than the cooler rock surrounding ...
2. The youngest rocks on the ocean floor are typically located near
... A mountain building at a continent-continent convergent boundary B magma rising up from the mantle at a divergent boundary C two tectonic plates sliding past one another at a transform boundary D subduction of one oceanic plate under another at a convergent boundary ...
... A mountain building at a continent-continent convergent boundary B magma rising up from the mantle at a divergent boundary C two tectonic plates sliding past one another at a transform boundary D subduction of one oceanic plate under another at a convergent boundary ...
spreading ridges
... – they separate, mostly at oceanic ridges – they collide, in areas such as oceanic trenches – where they may be subducted back into the mantle – or they slide past each other along transform faults ...
... – they separate, mostly at oceanic ridges – they collide, in areas such as oceanic trenches – where they may be subducted back into the mantle – or they slide past each other along transform faults ...
Social Studies
... Plates push against each other creating cracks in the crust onto Earth’s surface. Heat within the mantle causes rock in the lower plate to melt. This molten rock is magma. Lava is the name for magma that has escaped onto the surface. ...
... Plates push against each other creating cracks in the crust onto Earth’s surface. Heat within the mantle causes rock in the lower plate to melt. This molten rock is magma. Lava is the name for magma that has escaped onto the surface. ...
Plate Boundaries and Interplate Relationships
... Three Convergent Boundaries are present, all of them one way or another involving asubduction zone. The two most obvious ones are on the far right, and near the far left. Oceanic lithosphere is descending into the earth's mantle at these places, and being destroyed. In the continent-continent collis ...
... Three Convergent Boundaries are present, all of them one way or another involving asubduction zone. The two most obvious ones are on the far right, and near the far left. Oceanic lithosphere is descending into the earth's mantle at these places, and being destroyed. In the continent-continent collis ...
Our Earth
... • Move ~cm/year (like fingernail growth!) Seems small but moves ~4000km over ~200 million years (5% of Earth age) ...
... • Move ~cm/year (like fingernail growth!) Seems small but moves ~4000km over ~200 million years (5% of Earth age) ...
Name Date Period Number ______ Parent Signature Earth Test
... List the elements that make up Earth’s atmosphere from most to least abundant. N, O List the elements that make up living things from most to least abundant. C, H, O List the elements that make up the ocean from most to least abundant. H, O, Na, Cl List the elements that make up solid earth from mos ...
... List the elements that make up Earth’s atmosphere from most to least abundant. N, O List the elements that make up living things from most to least abundant. C, H, O List the elements that make up the ocean from most to least abundant. H, O, Na, Cl List the elements that make up solid earth from mos ...
Introduction to Earth Science Review
... 14. Know the map symbols on page 52. 15. Index contour? 16. Depression contours? ...
... 14. Know the map symbols on page 52. 15. Index contour? 16. Depression contours? ...
Crust - 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 ...
Texas Science Grade 8 Investigations
... drags the plates along with it as it moves. The heated material eventually cools enough to begin sinking back toward the core, where the process repeats itself. Different convection cells circulate in different directions, and this is the key to what happens at tectonic plate boundaries. The plates ...
... drags the plates along with it as it moves. The heated material eventually cools enough to begin sinking back toward the core, where the process repeats itself. Different convection cells circulate in different directions, and this is the key to what happens at tectonic plate boundaries. The plates ...
F309
... read and extract useful information from all sorts of maps hone your scientific writing and editing skills Upon completion of this course, you should be able to: ...
... read and extract useful information from all sorts of maps hone your scientific writing and editing skills Upon completion of this course, you should be able to: ...
The dynamic earth
... Why do coal deposits, a relic of lush ancient forests, occur in the icy barrenness of Antarctica? And why are glacial deposits found in now sweltering tropical Africa? ...
... Why do coal deposits, a relic of lush ancient forests, occur in the icy barrenness of Antarctica? And why are glacial deposits found in now sweltering tropical Africa? ...
Chapter C-1 Lesson 2
... The leading edge of the plate that is pushed under melts as it sinks into the mantle. The melted rock becomes magma that forces itself up between the plates. Sometimes volcanoes form in the middle of plates, over hot spots of magma. The magma melts a hole in the plate and rises up through the hole, ...
... The leading edge of the plate that is pushed under melts as it sinks into the mantle. The melted rock becomes magma that forces itself up between the plates. Sometimes volcanoes form in the middle of plates, over hot spots of magma. The magma melts a hole in the plate and rises up through the hole, ...
10-25 miles
... of Earth), then YES! • If you could just freefall all the way through Earth (8,000 miles) it would ...
... of Earth), then YES! • If you could just freefall all the way through Earth (8,000 miles) it would ...
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.