The History of Continental Drift
... Diastrophism: early term for all movement of the Earth’s crust. •Thought to result in the formation of mountains, ocean ...
... Diastrophism: early term for all movement of the Earth’s crust. •Thought to result in the formation of mountains, ocean ...
Document
... Lord Kelvin (19th C) suggested that contraction was due to cooling of the Earth. The problems with this mechanism: •Fossils are preserved in rocks that represent organisms that could not withstand the early temperatures. •Initial temperatures required for the amount of contraction were too high to b ...
... Lord Kelvin (19th C) suggested that contraction was due to cooling of the Earth. The problems with this mechanism: •Fossils are preserved in rocks that represent organisms that could not withstand the early temperatures. •Initial temperatures required for the amount of contraction were too high to b ...
EARTH AS A PLANET
... up CO2 and produce O2 - photosynthesis. O2 in atmosphere 2 billion years ago. ...
... up CO2 and produce O2 - photosynthesis. O2 in atmosphere 2 billion years ago. ...
Continental Drift
... Lord Kelvin (19th C) suggested that contraction was due to cooling of the Earth. The problems with this mechanism: •Fossils are preserved in rocks that represent organisms that could not withstand the early temperatures. •Initial temperatures required for the amount of contraction were too high to b ...
... Lord Kelvin (19th C) suggested that contraction was due to cooling of the Earth. The problems with this mechanism: •Fossils are preserved in rocks that represent organisms that could not withstand the early temperatures. •Initial temperatures required for the amount of contraction were too high to b ...
The four layers of the Earth
... • The Earth’s crust is pretty thin and is where we live. • The Earth’s mantle is the largest part of our Earth. • The upper part of the mantle moves slowly (kind of like squeezing silly putty) because of magma. • Convection is the cycle of heat rising, falling as it cools, and then heating and risin ...
... • The Earth’s crust is pretty thin and is where we live. • The Earth’s mantle is the largest part of our Earth. • The upper part of the mantle moves slowly (kind of like squeezing silly putty) because of magma. • Convection is the cycle of heat rising, falling as it cools, and then heating and risin ...
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... • Outer core is liquid and composed of an iron-nickel alloy. Convective flow of this fluid generates much of the Earth’s magnetic field. • Inner core is solid iron-nickel alloy. It is hotter than the outer core, but the intense pressure keeps it solid. ...
... • Outer core is liquid and composed of an iron-nickel alloy. Convective flow of this fluid generates much of the Earth’s magnetic field. • Inner core is solid iron-nickel alloy. It is hotter than the outer core, but the intense pressure keeps it solid. ...
Document
... External geologic processes • Wear down the Earth’s surface and move it around • Result from solar energy and gravity (wind, flowing water) • Weathering – Processes that break rocks down into smaller pieces • Plays key role in soil formation • Different kinds of rock will result in different soil ...
... External geologic processes • Wear down the Earth’s surface and move it around • Result from solar energy and gravity (wind, flowing water) • Weathering – Processes that break rocks down into smaller pieces • Plays key role in soil formation • Different kinds of rock will result in different soil ...
Student Notes - Unit 3 (P.2)
... Magma from the mantle is the source of all Earth’s rocks. Rocks form from other rocks as they gradually and continually change from one time of rock to another. This cycle is not a one way cycle as rocks do not necessarily change from one rock to another in a sequence but rather can witch betw ...
... Magma from the mantle is the source of all Earth’s rocks. Rocks form from other rocks as they gradually and continually change from one time of rock to another. This cycle is not a one way cycle as rocks do not necessarily change from one rock to another in a sequence but rather can witch betw ...
Earth`s Structure
... • How can we know so much about Earth’s interior if no one has ever drilled through the crust? • Earthquakes produce seismic waves, and travel thru materials at different speeds. • Scientists use these waves to determine the density of each of Earth's layers ...
... • How can we know so much about Earth’s interior if no one has ever drilled through the crust? • Earthquakes produce seismic waves, and travel thru materials at different speeds. • Scientists use these waves to determine the density of each of Earth's layers ...
Lesson 15 - Seismology Earths Interior
... 2) Probing Earth’s interior The nature of seismic waves Seismic wave speeds: depend on material properties are faster in more rigid materials increase with increasing depth (from more pressure) P waves: compressional waves: are fastest vibrate material back/forth in direction wave trave ...
... 2) Probing Earth’s interior The nature of seismic waves Seismic wave speeds: depend on material properties are faster in more rigid materials increase with increasing depth (from more pressure) P waves: compressional waves: are fastest vibrate material back/forth in direction wave trave ...
Worksheet
... 25. _________The idea that the Earth's plates are moving across the surface of the Earth. 26. _________A plate boundary in which the two plates crash into each other causing mountains building, earthquakes, and volcanic activity. 27. _________A plate boundary in which the two plates are sliding in o ...
... 25. _________The idea that the Earth's plates are moving across the surface of the Earth. 26. _________A plate boundary in which the two plates crash into each other causing mountains building, earthquakes, and volcanic activity. 27. _________A plate boundary in which the two plates are sliding in o ...
SGM3DP01 - Finding And Using Rocks
... of the Earth. This is the layer we walk on. It is made from a thin layer of cool rocks. ...
... of the Earth. This is the layer we walk on. It is made from a thin layer of cool rocks. ...
g. What do fossils show -evidence of the changing surface and
... S6E6. Students will describe various sources of energy and with their uses and conservation. a. Explain the role of the sun as the major source of energy and its relationship to wind and water energy. Which of the following is an advantage of solar energy? a. It will not run out for billions of year ...
... S6E6. Students will describe various sources of energy and with their uses and conservation. a. Explain the role of the sun as the major source of energy and its relationship to wind and water energy. Which of the following is an advantage of solar energy? a. It will not run out for billions of year ...
Chapter One
... • Outer core is liquid and composed of an iron-nickel alloy. Convective flow of this fluid generates much of the Earth’s magnetic field. • Inner core is solid iron-nickel alloy. It is hotter than the outer core, but the intense pressure keeps it solid. ...
... • Outer core is liquid and composed of an iron-nickel alloy. Convective flow of this fluid generates much of the Earth’s magnetic field. • Inner core is solid iron-nickel alloy. It is hotter than the outer core, but the intense pressure keeps it solid. ...
Vocabulary – Chapter 14
... present prices with current mining or extraction technology 22. Rock: any solid material that makes up a large, natural, continuous part of the earth’s crust 23. Rock cycle: largest and slowest of the earth’s cycles, consisting of geologic, physical, and chemical processes that form and modify rocks ...
... present prices with current mining or extraction technology 22. Rock: any solid material that makes up a large, natural, continuous part of the earth’s crust 23. Rock cycle: largest and slowest of the earth’s cycles, consisting of geologic, physical, and chemical processes that form and modify rocks ...
Earth`s Surface
... Identify three things you want to learn more about as you read the lesson. Write your ideas in ...
... Identify three things you want to learn more about as you read the lesson. Write your ideas in ...
Earth`s Surface
... which is thought to have been a great cosmic explosion of matter and energy from a single point, occurred about 13.7 billion years ago. From that explosion, dust particles began to collide and clump together. These clumps collided with other clumps until eventually, the Earth and other planets were ...
... which is thought to have been a great cosmic explosion of matter and energy from a single point, occurred about 13.7 billion years ago. From that explosion, dust particles began to collide and clump together. These clumps collided with other clumps until eventually, the Earth and other planets were ...
Time - Research School of Earth Sciences
... books on similar subject, the research and lectures of my colleagues from various universities around the world, my own research, and finally, numerous web sites. I am grateful for some figures I used in this lecture to E. Garnero and L. Breger. I am thankful to many others who make their research a ...
... books on similar subject, the research and lectures of my colleagues from various universities around the world, my own research, and finally, numerous web sites. I am grateful for some figures I used in this lecture to E. Garnero and L. Breger. I am thankful to many others who make their research a ...
Water Resources - Southgate Schools
... which groundwater can be usefully extracted using a water well. • Water table QuickTime™ and a decompressor are needed to see this picture. ...
... which groundwater can be usefully extracted using a water well. • Water table QuickTime™ and a decompressor are needed to see this picture. ...
The Archean: 4.6
... Earth/Moon system has slowed the Earth’s rotation, so that a day in the Archean was only ~20 hours long; a year was ~450 days. (how do we know this? (1) theoretical calculations based on what we know about today’s gravitational forces of the Earth-Moon-Sun system; (2) geologists have identified rock ...
... Earth/Moon system has slowed the Earth’s rotation, so that a day in the Archean was only ~20 hours long; a year was ~450 days. (how do we know this? (1) theoretical calculations based on what we know about today’s gravitational forces of the Earth-Moon-Sun system; (2) geologists have identified rock ...
Spherical Earth
The concept of a spherical Earth dates back to around the 6th century BC, when it was mentioned in ancient Greek philosophy, but remained a matter of philosophical speculation until the 3rd century BC, when Hellenistic astronomy established the spherical shape of the earth as a physical given. The paradigm was gradually adopted throughout the Old World during Late Antiquity and the Middle Ages. A practical demonstration of Earth's sphericity was achieved by Ferdinand Magellan and Juan Sebastián Elcano's expedition's circumnavigation (1519−1522).The concept of a spherical Earth displaced earlier beliefs in a flat Earth: In early Mesopotamian mythology, the world was portrayed as a flat disk floating in the ocean and surrounded by a spherical sky, and this forms the premise for early world maps like those of Anaximander and Hecataeus of Miletus. Other speculations on the shape of Earth include a seven-layered ziggurat or cosmic mountain, alluded to in the Avesta and ancient Persian writings (see seven climes).The realization that the figure of the Earth is more accurately described as an ellipsoid dates to the 18th century (Maupertuis).In the early 19th century, the flattening of the earth ellipsoid was determined to be of the order of 1/300 (Delambre, Everest). The modern value as determined by the US DoD World Geodetic System since the 1960s is close to 1/298.25.