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6th Grade Science
6th Grade Science

... Describes the common characteristics, which distinguish seawater from fresh water. Identifies the major layers of ocean water and ocean zones. Describes characteristics of ocean zones and adaptations of life forms for different zones. Defines a thermocline Identifies the main causes of ocean waves. ...
Slide 1
Slide 1

... Even though Venus is almost exactly the same size as the Earth, and even though it is just a little closer to the Sun…. – It has an atmosphere 90× the Earth’s, and it is mostly CO2. – It’s surface temperature is 470ºC (900ºF)! – For comparison, Mercury is only 420ºC, and it receives 300% the radiati ...
Chapter 4: Plate Tectonics
Chapter 4: Plate Tectonics

... Conduction- heat transfer within a material or between materials that are touching ...
Earths Layered Structure
Earths Layered Structure

... Ave. density of the crustal rocks ; granite, basalt, peridotite is 3.0 g/cc. Yet the average density of the entire Earth is 5.4 g/cc Meteorites formed from the same materials at the same time as the terrestrial planets. Some of them are rocky and some are metallic EQ waves were found to reflect, bou ...
Term 1 wk7
Term 1 wk7

... A sudden movement of the earth's crust caused by the release of stress accumulated along geologic faults or by volcanic activity. An instrument for automatically detecting and recording the intensity, direction, and duration of a movement of the ground, especially of an earthquake. The lowest point ...
Plate Tectonics Test Study Guide
Plate Tectonics Test Study Guide

... Section 5: The Theory of Plate Tectonics (pages 32-36) You should be able to:  Describe the theory of plate tectonics  Describe the three types of plate boundaries, including what happens at each type, and the landforms that can be created at each type. Section 5: Key Terms ...
Plate Tectonics Test Study Guide (A)
Plate Tectonics Test Study Guide (A)

... Section 5: The Theory of Plate Tectonics (pages 32-36) You should be able to:  Describe the theory of plate tectonics  Describe the three types of plate boundaries, including what happens at each type, and the landforms that can be created at each type. Section 5: Key Terms plate- a section of the ...
Chapter 22.1: Earth`s Structure
Chapter 22.1: Earth`s Structure

... 1. Compare how constructive and destructive forces affect Earth’s surface. 2. List the 3 layers of Earth. 3. Which layer has currents of moving rock? 4. Which is the most dense layer? 5. Which layer is made of light rocks like silicates? 6. Which is more dense: Continental or Oceanic Crust? 7. Which ...
Excellence
Excellence

... Blue light is at the other end of the spectrum and has a much smaller wavelength and a higher frequency. This means blue light will have more energy compared to the other colours. When white light hits the Earth’s atmosphere, it keeps travelling in a straight line until it hits something. Because t ...
5.1 notes What processes change Earth`s crust? Objective: Compare
5.1 notes What processes change Earth`s crust? Objective: Compare

... Some changes in Earth’s surface occur very suddenly. Some take hundreds, thousands even millions of years to happen. Over time, pressure in Earth’s crust can cause layers to bend, curve, or wrinkle. This is called Folding. Rocks may crack underneath, but the layers stay together. Upward folds are ca ...
The Dynamic Earth www.mnh.si.edu/earth/ Plate Tectonics and
The Dynamic Earth www.mnh.si.edu/earth/ Plate Tectonics and

... The heat within the Earth is as old as __________________. Where did the heat come from? ...
Snack Tectonics
Snack Tectonics

... Final Step: Eat all remaining model materials (except, of course, wax paper and plastic utensils!) 3. Wrap-up: Sharing Experiences and Building Connections: 10 minutes The Earth's surface is covered in tectonic plates that move. The way that plates interact with each other creates many of the geolo ...
Using Earthquakes To Study the Earth`s Interior
Using Earthquakes To Study the Earth`s Interior

... Seismologists use earthquake waves to map the structure of the interior of the earth in much the same way oceanographers use sonar to map the ocean floor. As the earthquake waves move through the different layers of the earth, they change speed and direction. Sometimes they even stop. In other words ...
Chapter 3
Chapter 3

... • Matter can be transformed, but cannot be created or destroyed. • Nutrients, matter that organisms require for life process, circulate throughout the environment in biogeochemical cycles. ...
Pre-Test
Pre-Test

... Unusual Volcano Nyiragongo, located at 2° S 29° E, is an active African volcano. It has the most fluid lava on Earth. The lava has a composition unlike any other lava in the world. The rare isotopes found in the lava are similar to those found in ancient asteroids. This fact leads scientists to infe ...
Density of the Earth
Density of the Earth

... The mass of the earth is approximately 5.98 x 1023kg. The scale of this measurement is difficult to comprehend and impossible to measure directly. However, smaller scale measurements can be completed in the laboratory that will give insight into the density and mass of the Earth. Current theories of ...
Compilation of activites
Compilation of activites

... Benchmark: Understands how people who live in naturally hazardous regions adapt to their environments (e.g., the use of sea walls to protect coastal areas subject to severe storms and the use of earthquake-resistant construction techniques in different regions within the Ring of Fire). Benchmark: Kn ...
Earth and Atmosphere Week 6 10th
Earth and Atmosphere Week 6 10th

... In 1915, the scientist Alfred Wegener suggested that Africa and South America had once been joined but had since drifted apart. Evidence for his theory came from the animal fossils found in the two continents. The fossils are almost the same, although animals now living in Africa and South America a ...
the earth´s relief - Junta de Andalucía
the earth´s relief - Junta de Andalucía

... o Peninsula: a narrow stretch of land surrounded on three sides by water o Isthmus: a narrow strip of land, like a bridge, connecting two larger strips of land o Cape: a point or head of land projecting into a body of water o Gulf: a large area of a sea or ocean partially enclosed by land (the Gulf ...
3earth layers
3earth layers

... The crust, though, is made of rock that has cooled to a hard outer skin. The continental crust is the crust covered by land. This crust is light in color and is made mostly of granite. Beneath the ocean lies the oceanic crust. This crust is made of basalt. This crust covers more than two-thirds of t ...
Earth`s Crust in Motion
Earth`s Crust in Motion

... • How rocks move determines how much friction there is between opposite sides of the fault. • Friction- a force that opposes the motion of one surface as it moves across another. – It exist because surfaces are not perfectly smooth. ...
GEOL 100 Survey of Geology
GEOL 100 Survey of Geology

... Upon successful completion of this course, a student will be able to: A. Demonstrate an understanding of the scientific method B. Demonstrate an understanding of the structure, materials, internal processes and external processes of the Earth within the framework of plate tectonics C. Effectively de ...
Earth Layers PPT
Earth Layers PPT

... is much hotter and has the ability to flow. The outer core and inner core are even hotter with pressures so great you would be squeezed into a ball smaller than a marble if you were able to go to the center of the Earth! ...
Land Formations - Library Video Company
Land Formations - Library Video Company

... Pangaea — A giant continent that is thought to have existed about 300 million years ago and consisted of all of the present-day continents. plates — Solid rock pieces that make up the crust of the Earth’s surface.Plate margins are areas where the crust is being formed or destroye d .These plates flo ...
2 Precambrian Geology
2 Precambrian Geology

... coalescing interstellar dust. • Earth was bombarded by large planetesimals adding to earth’s mass (adds heat) • Hot spinning pre-earth mass melted, caused differentiation of materials according to density. • Distinct earth layers begin to form – Dense iron and nickel migrate to center (core) – silic ...
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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.
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