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File - Mr. Catt`s Class
File - Mr. Catt`s Class

... rotating object, also known as wobbling. 2. The Earth is not a perfect sphere; its equatorial diameter is about 26 miles greater than its polar diameter. Earth’s spinning on its axis causes it to flatten slightly at the poles. 3. Oblateness is a measure of the “flatness” of a planet, calculated by d ...
Plan for Living on a Restless Planet Sets NASA`s Solid Earth Agenda
Plan for Living on a Restless Planet Sets NASA`s Solid Earth Agenda

... strategy for the highest priority objectives in solid Earth science for the space agency over the next 25 years.The strategy addresses six challenges that are of fundamental scientific importance,have strong implications for society, and are amenable to substantial progress through a concerted serie ...
Newton`s law of universal gravitation states that the
Newton`s law of universal gravitation states that the

ch11_Lecture
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... Igneous Processes Sedimentary Processes Metamorphic Processes ...
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App 3 Module 1_Non-Excel - Scholar Commons
App 3 Module 1_Non-Excel - Scholar Commons

Natural Disasters
Natural Disasters

... other object in the entire universe! It is this pull that creates weight. It is this pull that causes an object to fall. Such a pull is called a force. The force that causes an object to fall is the force due to gravity. Gravity on the earth is constant... All objects fall equally fast. If we think ...
earth_moon_sun_true_or_false
earth_moon_sun_true_or_false

... It is actually:__________ ...
The earth sun and moon are all circles. The earth sun and moon are
The earth sun and moon are all circles. The earth sun and moon are

Inside Earth WebQuest
Inside Earth WebQuest

... Heat transfer is the movement of heat from a warmer object to a cooler object. There are three ways in which heat can be transferred; conduction, convection and/or radiation. Click on the links below and answer the questions that follow. Go to: http://www.mansfieldct.org/schools/mms/staff/hand/convc ...
Just how integrated is the Earth System
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... rock fragments and soil, and sculpts the surface of the Earth. ...
File
File

... • Ancient Greeks discovered earth’s radius is about 6,400 km (4,000 miles) • Due to rotation, earth is not quite a sphere, but an oblate spheroid, wider at equator. ...
Practice Questions: Earth`s Interior
Practice Questions: Earth`s Interior

Seismic waves - Albert
Seismic waves - Albert

... causes great damage to life and property of people living in coastal areas as well as to tourists Tsunami caused by an earthquake in the sea near Sumatra on 26th Dec,2004 hit south east Asian countries including India and Sri Lanka.There was heavy damage in these countries and more than 3 lakh peopl ...
Ride The Convection Currents
Ride The Convection Currents

... Date:___________________ ...
Inside the Earth
Inside the Earth

... • It is between 1800-2900 kilometers thick. • More than 2/3 of Earth’s mass is found in this layer. • The top and bottom of the mantle is made up of rock. In the center of the mantle, the rock flows like syrup, a very thick liquid. It is viscous. ...
The geoid on a rotating earth 1 Potentials for Gravity and Magnetism
The geoid on a rotating earth 1 Potentials for Gravity and Magnetism

... (2) With the known density distribution in the earth, the shape of a fluid, rotating body can be calculated and a value for flattening derived for this body. The result of this calculation is that the measured f and the value calculated for a fluid model are nearly the same, indicating that the eart ...
Earth Systems Unit 1 Teacher notes File
Earth Systems Unit 1 Teacher notes File

sdhsjdhs - Manskopf
sdhsjdhs - Manskopf

... The Earth is a dynamic system consisting of the geosphere, the atmosphere, the hydrosphere and the biosphere. The Earth’s geosphere is a complex system that is constantly changing impacting life on Earth. A thin mixture of gasses that surrounds our planet makes life on Earth possible in many ways. L ...
Learn About Earthquakes
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... What is the Earthquake Epicentre? The epicentre of an earthquake is the place on the Earth’s surface directly above the focus or (hypocentre), the place inside the earth where the quake originates. Earthquake foci are usually somewhere between the surface and 100 km in depth. In some areas, however, ...
Inside the Earth - Madison County Schools
Inside the Earth - Madison County Schools

... direct evidence from rock samples and indirect evidence from seismic waves. ...
Chapter 2: The need for Earth Heritage Conservation
Chapter 2: The need for Earth Heritage Conservation

... The international significance of Earth heritage sites Much of the early knowledge of the history of the Earth was developed in Britain and many British sites have played a part in the development of now universally-applied principles of geology. These sites have great historical importance. For exa ...
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What causes Earthquakes? Earthquake Tip 1 Learning

MS. Earth`s Systems
MS. Earth`s Systems

Structure of the Earth Project
Structure of the Earth Project

... Structure of the Earth Project Scientists think about Earth’s layers in two ways: by their chemical makeup and by their physical properties. Scientists divide Earth into three layers based on chemical makeup: crust, mantle and core. Scientists also divide Earth into five layers based on physical pro ...
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History of geodesy



Geodesy (/dʒiːˈɒdɨsi/), also named geodetics, is the scientific discipline that deals with the measurement and representation of the Earth. The history of geodesy began in antiquity and blossomed during the Age of Enlightenment.Early ideas about the figure of the Earth held the Earth to be flat (see flat earth), and the heavens a physical dome spanning over it. Two early arguments for a spherical Earth were that lunar eclipses were seen as circular shadows which could only be caused by a spherical Earth, and that Polaris is seen lower in the sky as one travels South.
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