Internal Structure of the Earth
... • The fossils and rocks on separate continents being identical. • Climate regions (found by looking at fossils) that did not match up with the positions the continents are located today. ...
... • The fossils and rocks on separate continents being identical. • Climate regions (found by looking at fossils) that did not match up with the positions the continents are located today. ...
plate tectonics - Science with Ms. Reathaford!
... that there should be similar rock bands separated by oceans. He found this to be true as evidenced by: 1. Appalachian Mountains share similar features with those found in Greenland and Europe as well 2. Other similar groups of rocks were found in South America and Africa, whose coastlines also match ...
... that there should be similar rock bands separated by oceans. He found this to be true as evidenced by: 1. Appalachian Mountains share similar features with those found in Greenland and Europe as well 2. Other similar groups of rocks were found in South America and Africa, whose coastlines also match ...
Chapter Four – Earth Science
... • Convection Currents: large convection systems in the mantle may carry along the plates of the lithosphere like a conveyor belt. ...
... • Convection Currents: large convection systems in the mantle may carry along the plates of the lithosphere like a conveyor belt. ...
Vocabulary for Earth`s Structure and Note Cards Crust – the
... Mantle – The layer of the Earth between the crust and the outer core Core – the Earth’s layer that extends from below the mantle to the center of the Earth. Outer core – liquid part of the core, made of molten iron and nickel Inner core – solid part of the core, mostly made of solid iron and nickel ...
... Mantle – The layer of the Earth between the crust and the outer core Core – the Earth’s layer that extends from below the mantle to the center of the Earth. Outer core – liquid part of the core, made of molten iron and nickel Inner core – solid part of the core, mostly made of solid iron and nickel ...
Wegener—Continental Drift
... B. Fossils of the same ocean dwelling organisms were found in different oceans. C. Fossils of the same warm climate organisms were found on continents with warm climates. D. Fossils of the same freshwater organisms were found on areas with abundant freshwater. ...
... B. Fossils of the same ocean dwelling organisms were found in different oceans. C. Fossils of the same warm climate organisms were found on continents with warm climates. D. Fossils of the same freshwater organisms were found on areas with abundant freshwater. ...
Building a Theory
... • Theory that is held with a very high degree of confidence and is comprehensive in scope. • Paradigm Shift – The replacement of an existing paradigm with a better paradigm. ...
... • Theory that is held with a very high degree of confidence and is comprehensive in scope. • Paradigm Shift – The replacement of an existing paradigm with a better paradigm. ...
Stream transport
... junctions align to form long rift valley Failed rift arms (aulacogens) form major continental drainages ...
... junctions align to form long rift valley Failed rift arms (aulacogens) form major continental drainages ...
File
... •Alfred Wegener in the early 1900’s proposed the hypothesis that continents were once joined together in a single large land mass he called Pangea (meaning “all land” in Greek). • He proposed that Pangea had split apart and the continents had moved gradually to their present positions - a process t ...
... •Alfred Wegener in the early 1900’s proposed the hypothesis that continents were once joined together in a single large land mass he called Pangea (meaning “all land” in Greek). • He proposed that Pangea had split apart and the continents had moved gradually to their present positions - a process t ...
Americas, Asia will join to form a supercontinent
... Geological analysis suggest the current-day continents we know and love will drift together, forming a new supercontinent like ones that existed many millions of years ago. What’s not certain is where that supercontinent will be. The authors of a new Nature study suggest that the next supercontinent ...
... Geological analysis suggest the current-day continents we know and love will drift together, forming a new supercontinent like ones that existed many millions of years ago. What’s not certain is where that supercontinent will be. The authors of a new Nature study suggest that the next supercontinent ...
Unit 2 - Plate Tectonics
... proposed continental drift in 1915. Wegener found evidence that the continents were once joined together in a giant supercontinent he called Pangaea. His theory states that, when Pangaea broke up, the continents slowly drifted to their current positions. Pangaea – an ancient supercontinent that scie ...
... proposed continental drift in 1915. Wegener found evidence that the continents were once joined together in a giant supercontinent he called Pangaea. His theory states that, when Pangaea broke up, the continents slowly drifted to their current positions. Pangaea – an ancient supercontinent that scie ...
Theory Development
... German Meteorologist and Geophysist Pangaea Theory – Wegener claimed that the continents had formed a single landmass, which split apart. He was not the first to suggest that the continents had been one, but was the first to present evidence from several fields. ...
... German Meteorologist and Geophysist Pangaea Theory – Wegener claimed that the continents had formed a single landmass, which split apart. He was not the first to suggest that the continents had been one, but was the first to present evidence from several fields. ...
Chapter 17 Plate Tectonics Notes
... • Continental Drift – the continents had once been joined to form a single supercontinent called Pangaea. • He hypothesized that over the last 200 million years the continents broke apart and drifted slowly to their positions today. ...
... • Continental Drift – the continents had once been joined to form a single supercontinent called Pangaea. • He hypothesized that over the last 200 million years the continents broke apart and drifted slowly to their positions today. ...
Continental Drift
... • Continental Drift – the continents had once been joined to form a single supercontinent called Pangaea. • He hypothesized that over the last 200 million years the continents broke apart and drifted slowly to their positions today. ...
... • Continental Drift – the continents had once been joined to form a single supercontinent called Pangaea. • He hypothesized that over the last 200 million years the continents broke apart and drifted slowly to their positions today. ...
plates
... The plates may move in opposite directions or in the same directions but at different rates and frequent earthquakes are ...
... The plates may move in opposite directions or in the same directions but at different rates and frequent earthquakes are ...
Continental Drift
... Magnetic Reversals Earth’s magnetic field does not always point north Magnetic reversals – orientation is opposite of normal “Normal” rocks and “Reversal” rocks line up by time period Alternating normal and reversed polarity over time Geomagnetic time scale ...
... Magnetic Reversals Earth’s magnetic field does not always point north Magnetic reversals – orientation is opposite of normal “Normal” rocks and “Reversal” rocks line up by time period Alternating normal and reversed polarity over time Geomagnetic time scale ...
Chapter 14: The Paleogene
... warm, humid Paleocene and Eocene o Tropical and subtropical floras expanded to high latitudes inside the Arctic Circle; similar conditions occurred in Antarctica o Modern families of angiosperms evolved, including early grasses; at first these could not tolerate continued grazing by herbivores, and ...
... warm, humid Paleocene and Eocene o Tropical and subtropical floras expanded to high latitudes inside the Arctic Circle; similar conditions occurred in Antarctica o Modern families of angiosperms evolved, including early grasses; at first these could not tolerate continued grazing by herbivores, and ...
OCEANIC GEOGRAPHY and the EARTH
... 2. formation of the oceans: oceans have been around for 4 billion years a. Theory #1: ocean water came from outgassing from volcanoes that spew water vapor from the mantle, which then condensed; some dissolved salts also may have come from the mantle, but they also come from weathering of rocks b. T ...
... 2. formation of the oceans: oceans have been around for 4 billion years a. Theory #1: ocean water came from outgassing from volcanoes that spew water vapor from the mantle, which then condensed; some dissolved salts also may have come from the mantle, but they also come from weathering of rocks b. T ...
Chapter 7
... • Combines the hypothesis of continental drift with the theory of sea floor spreading. • Earth’s crust and upper mantle broken into plates. • Shift on layer of molten rock. ...
... • Combines the hypothesis of continental drift with the theory of sea floor spreading. • Earth’s crust and upper mantle broken into plates. • Shift on layer of molten rock. ...
Physical Science - elyceum-beta
... • Evidence that the orientation reverses every 200,000 to several million years • Matched bands with the same magnetic orientation are found on both sides of a ridge ...
... • Evidence that the orientation reverses every 200,000 to several million years • Matched bands with the same magnetic orientation are found on both sides of a ridge ...
Week 2 (Norton), part a (pdf, 2.2 MB)
... tectonics began in this stage. Life expanded, producing oxygen in the atmosphere. Carbon dioxide was removed to form carbonate sedimentary rocks, reducing the pressure of the atmosphere dramatically. (D) Plate tectonics persisted as lithospheric slabs participated in the convection of the mantle. Th ...
... tectonics began in this stage. Life expanded, producing oxygen in the atmosphere. Carbon dioxide was removed to form carbonate sedimentary rocks, reducing the pressure of the atmosphere dramatically. (D) Plate tectonics persisted as lithospheric slabs participated in the convection of the mantle. Th ...
Name: Date: Period:____ Study Guide for Plate Tectonics Key 1
... See matrix for all composition and all layers are solid except outer core is a liquid (The difference between density of the crust and the core is that the core contains more iron, thus making it denser) ...
... See matrix for all composition and all layers are solid except outer core is a liquid (The difference between density of the crust and the core is that the core contains more iron, thus making it denser) ...
Continental Drift - CoconinoHighSchool
... around the continents. 2. Magnetic Variations on the Ocean Floor (Palaeomagnetism) - during cooling, minerals in the Basaltic rock, align themselves along the Earth's magnetic filed - forming a permanent record of magnetic field in the rocks. Periodic variations in the earth's magnetic field, have p ...
... around the continents. 2. Magnetic Variations on the Ocean Floor (Palaeomagnetism) - during cooling, minerals in the Basaltic rock, align themselves along the Earth's magnetic filed - forming a permanent record of magnetic field in the rocks. Periodic variations in the earth's magnetic field, have p ...
Geology - ClassNet
... 29) About 300 million years ago, the earth's plates came together to form the supercontinent called __________ . 30) The first evidence that probably led people to think that the continents were connected was __________. 31) Each era represents a time of major __________ . ...
... 29) About 300 million years ago, the earth's plates came together to form the supercontinent called __________ . 30) The first evidence that probably led people to think that the continents were connected was __________. 31) Each era represents a time of major __________ . ...
Geological history of Earth
The geological history of Earth follows the major events in Earth's past based on the geologic time scale, a system of chronological measurement based on the study of the planet's rock layers (stratigraphy). Earth formed about 4.54 billion years ago by accretion from the solar nebula, a disk-shaped mass of dust and gas left over from the formation of the Sun, which also created the rest of the Solar System.Earth was initially molten due to extreme volcanism and frequent collisions with other bodies. Eventually, the outer layer of the planet cooled to form a solid crust when water began accumulating in the atmosphere. The Moon formed soon afterwards, possibly as the result of a Mars-sized object with about 10% of the Earth's mass impacting the planet in a glancing blow. Some of this object's mass merged with the Earth, significantly altering its internal composition, and a portion was ejected into space. Some of the material survived to form an orbiting moon. Outgassing and volcanic activity produced the primordial atmosphere. Condensing water vapor, augmented by ice delivered from comets, produced the oceans.As the surface continually reshaped itself over hundreds of millions of years, continents formed and broke apart. They migrated across the surface, occasionally combining to form a supercontinent. Roughly 750 million years ago, the earliest-known supercontinent Rodinia, began to break apart. The continents later recombined to form Pannotia, 600 to 540 million years ago, then finally Pangaea, which broke apart 180 million years ago.The present pattern of ice ages began about 40 million years ago, then intensified at the end of the Pliocene. The polar regions have since undergone repeated cycles of glaciation and thaw, repeating every 40,000–100,000 years. The last glacial period of the current ice age ended about 10,000 years ago.