Earth - edl.io
... Alternating patterns of magnetic properties were discovered in rocks found on the seafloor. Dating of the rocks indicated that as one moved away from the ridge, the rocks became older. New crust was being created at volcanic rift zones. ...
... Alternating patterns of magnetic properties were discovered in rocks found on the seafloor. Dating of the rocks indicated that as one moved away from the ridge, the rocks became older. New crust was being created at volcanic rift zones. ...
Geographic Influences on Identity
... The study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries. ...
... The study of the physical features of the earth and its atmosphere, and of human activity as it affects and is affected by these, including the distribution of populations and resources, land use, and industries. ...
Monday September 15th, 2014
... • Since the beginning, the earth has been changing. • Geologists try to identify these changes, explain the causes and effects, and predict future changes. ...
... • Since the beginning, the earth has been changing. • Geologists try to identify these changes, explain the causes and effects, and predict future changes. ...
Lesson 9 The Physical Earth
... From outer space, Earth looks like one solid blue ball. In fact, our planet is much more complex. It is actually made up of four very different but interconnected systems: the lithosphere, the hydrosphere, the atmosphere and the biosphere. The lithosphere The lithosphere includes Earth´s crust and t ...
... From outer space, Earth looks like one solid blue ball. In fact, our planet is much more complex. It is actually made up of four very different but interconnected systems: the lithosphere, the hydrosphere, the atmosphere and the biosphere. The lithosphere The lithosphere includes Earth´s crust and t ...
solid inner core
... additional material pushing down Density also increases from the crust (about 3 g/cm3) to the core (about 10.7 g/cm3) - lighter materials floated to the top as the Earth was forming ...
... additional material pushing down Density also increases from the crust (about 3 g/cm3) to the core (about 10.7 g/cm3) - lighter materials floated to the top as the Earth was forming ...
Mantle Convection
... Scientists are not in complete agreement as to what causes plate motion, but one suggestion is that convection currents within Earth’s interior provide the driving mechanism. Many scientists think convection occurs in the asthenosphere due to heat generated from Earth’s interior. A convection curren ...
... Scientists are not in complete agreement as to what causes plate motion, but one suggestion is that convection currents within Earth’s interior provide the driving mechanism. Many scientists think convection occurs in the asthenosphere due to heat generated from Earth’s interior. A convection curren ...
Lecture 2 The Earth. I. The Interior Earth – vital statistics Planet size
... Red = stronger g Blue = weaker g Geoid is the surface of equal g Small variation in gravitational acceleration. Can also be used to map Ocean/Ice levels. ...
... Red = stronger g Blue = weaker g Geoid is the surface of equal g Small variation in gravitational acceleration. Can also be used to map Ocean/Ice levels. ...
earth science– geosphere
... EARTH SCIENCE– GEOSPHERE Refer to page 280. Explain why the geosphere is the largest sphere. ____________________________________________________________________________________ ...
... EARTH SCIENCE– GEOSPHERE Refer to page 280. Explain why the geosphere is the largest sphere. ____________________________________________________________________________________ ...
Chapter 1 Guided Notes Ans
... - Three types of maps: general reference, thematic, navigational - A topographic map is one kind of general reference map - Topographic map—shows natural and man-made features of earth - Thematic map—shows specific data such as climate, population density - A navigation map is used by sailors, pilot ...
... - Three types of maps: general reference, thematic, navigational - A topographic map is one kind of general reference map - Topographic map—shows natural and man-made features of earth - Thematic map—shows specific data such as climate, population density - A navigation map is used by sailors, pilot ...
Week 3 (Norton), part c (pdf, 4.5 MB)
... entitled “Earth’s plate tectonics from a Martian perspective,” he suggests that the problem faced by earthbound geologists is that they have been forced to study most of their subject backward, or wrong-way-round. By starting from trying to make sense of processes taking place right at their feet, t ...
... entitled “Earth’s plate tectonics from a Martian perspective,” he suggests that the problem faced by earthbound geologists is that they have been forced to study most of their subject backward, or wrong-way-round. By starting from trying to make sense of processes taking place right at their feet, t ...
Ch. 7 Plate Tectonics Section 1 Inside the Earth
... Theory that the Earth’s lithosphere is divided into tectonic plates that move on top of the asthenosphere. What causes the plates to move? ...
... Theory that the Earth’s lithosphere is divided into tectonic plates that move on top of the asthenosphere. What causes the plates to move? ...
Chapter 1-3
... western edge of SA moves about 1.8 inches per year o similar to the rate at which your fingernails grow When Plates Meet - Sometimes the plates spread away from each other - Sometimes the plates move toward each other o If the 2 plates are “continental plates” the collision produces high ...
... western edge of SA moves about 1.8 inches per year o similar to the rate at which your fingernails grow When Plates Meet - Sometimes the plates spread away from each other - Sometimes the plates move toward each other o If the 2 plates are “continental plates” the collision produces high ...
Earth`s Interior Chapter-1 Section-1
... Destructive forces: shape the surface by slowly wearing away mountains and other features. EROSION Example: ocean waves, rain, wind, etc. Continents ...
... Destructive forces: shape the surface by slowly wearing away mountains and other features. EROSION Example: ocean waves, rain, wind, etc. Continents ...
Chapter 2 Study Guide: Mapping Earth`s Surface Section 2
... 29. The units scientists use to measure distances around a circle are called ______________________. 30. The imaginary line that circles the Earth halfway between the North and South Poles is the _____________. 31. Half of the earth’s surface is called a _______________________________ (northern or ...
... 29. The units scientists use to measure distances around a circle are called ______________________. 30. The imaginary line that circles the Earth halfway between the North and South Poles is the _____________. 31. Half of the earth’s surface is called a _______________________________ (northern or ...
History of Earth Vocabulary
... The mantle is the largest layer of the Earth’s interior below the crust. The mantle is where convection takes place. The crust is the outermost layer of the Earth. The lithosphere is the thin outer shell of Earth consisting of the crust and the rigid upper mantle. Most of the Earth’s plate movement ...
... The mantle is the largest layer of the Earth’s interior below the crust. The mantle is where convection takes place. The crust is the outermost layer of the Earth. The lithosphere is the thin outer shell of Earth consisting of the crust and the rigid upper mantle. Most of the Earth’s plate movement ...
Chapter 2 Earth as a System
... less organized with time” Universe’s energy is spread out more and more uniformly over time ...
... less organized with time” Universe’s energy is spread out more and more uniformly over time ...
Earth`s Spheres
... that matter was broken into pieces and thrown with high speed in all directions. Eventually this formed stars and galaxies and these bodies are STILL moving away from each other. As the matter cooled from the explosion, Hydrogen and Helium gas formed. 1 billion years later, the first stars wer ...
... that matter was broken into pieces and thrown with high speed in all directions. Eventually this formed stars and galaxies and these bodies are STILL moving away from each other. As the matter cooled from the explosion, Hydrogen and Helium gas formed. 1 billion years later, the first stars wer ...
Climate and Seasons PowerPoint
... Changing Seasons If we are closer in January than in July, why is it that we have are coldest days of the year during this time? • Earth’s tilted axis combined with the revolution causes seasons to change ...
... Changing Seasons If we are closer in January than in July, why is it that we have are coldest days of the year during this time? • Earth’s tilted axis combined with the revolution causes seasons to change ...
Use the diagram below to fill in the appropriate part of the earth.
... Section III: Traveling through the earth’s layers. (12 points) Scenario: This weekend I was at a garage sale and I bought a machine that would travel through the earth’s layers. So I decided to take a field trip and go to the core of the earth. But before I go, I decided to ask you about the densit ...
... Section III: Traveling through the earth’s layers. (12 points) Scenario: This weekend I was at a garage sale and I bought a machine that would travel through the earth’s layers. So I decided to take a field trip and go to the core of the earth. But before I go, I decided to ask you about the densit ...
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.