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PTYS/ASTR 206 – Section 2 – Fall 2004 Activity #1: 8/25/04
PTYS/ASTR 206 – Section 2 – Fall 2004 Activity #1: 8/25/04

... The purpose of this activity is to go over material covered both in class and in the textbook. This is an ACTIVITY, so feel free to discuss these with one or two of your neighbors. You must turn in your own work. You decide how much the question is worth! You can choose each number (4, 3, 2, 1) only ...
Plate Tectonics - Teacher Background File
Plate Tectonics - Teacher Background File

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... II. Plate Tectonics ...
Chap 20 Earth and Comparative Planetology
Chap 20 Earth and Comparative Planetology

... and fascinating because it helps us understand what we are and where we are in the universe. Thus, we cannot omit Earth from our discussion—it is where we are. The next two chapters will discuss the Earthlike planets, but that will not end our thoughts of Earth. The moons of ...
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... Crust: outer/thinnest zone made mostly of oxygen ...
Principles of Earth History
Principles of Earth History

... Crust - The outermost layer of the Earth, defined by density, composition (Si, O), and a seismic velocity difference from the underlying mantle. Oceanic: 5-10km, continental: 33km. Mantle – It’s composed of Si, O, Mg and Fe. It extends to 2900km depth. Lithosphere - Outer, relatively rigid layer of ...
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Alfred Wegener was a scientist who lived about 100 years ago
Alfred Wegener was a scientist who lived about 100 years ago

... Earthquakes are most common at the boundaries, or edges, of the tectonic plates where the plates are converging (coming together), diverging (moving apart), or sliding against each other side by side (transform). In fact, scientists have located the boundaries of tectonic plates by mapping the locat ...
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...  At key localities children will sketch the features they see to observe different types of weathering. ...
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Introduction to Earthquakes EASA

... bulk of the lower mantle is termed the mesosphere and is stronger than the asthenosphere  However, it does behave like a fluid over long time scales (convects)  It is not clear if the whole mantle convects as one layer or two ...
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GeologyIntroduction - University of Hawaii

... below the fracture because oceanic crust is denser than the one composing the fracture. Magma is created at the subduction wedge ...
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draw a diagram of earth`s interior and label each

... WHAT IS THE PROCESS CALLED THAT DRIVES THE MOVEMENT OF LITHOSPHERIC PLATES AND WHERE DOES THIS OCCUR? DRAW A DIAGRAM DESCRIBING HOW THIS PROCESS WORKS CONVECTION OCCURS IN THE MANTLE WHEN COOL DENSE MATERIAL SINKS TO THE BOTTOM OF THE MANTLE NEAR THE CORE AND WARM LESS DENSE MATERIAL RISES TO THE T ...
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Architecture of the Solar System and Earth placement

... Orbit of planet Earth is stabilized by the resonance with planet Venus - they are of similar size and are in dynamic stability *1 arround resonance frequency 13:8 *2 [image 1, image 2]. If there is any instability in Planet's orbits (which really occur frequently due to tugs by outer planets, mostly ...
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06 Science FMA March 11

... 20 Imagine that you can travel to the center of the Earth. The diagram above lists the average thickness of each layer of the Earth. How far from the center of the Earth would you be if you were leaving the lithosphere and entering the asthenosphere in kilometers? Record and bubble your answer. ...
Unit 2 Vocabulary – Plate Tectonics
Unit 2 Vocabulary – Plate Tectonics

... asthenosphere – the plastic-like, but solid, layer in the mantle which allows the lithosphere above to move continental drift hypothesis – the continents once formed a giant landmass (Pangaea), broke apart, and then drifted to their current locations mid-ocean ridge – a continuous mountain chain on ...
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Unpacking the Content Standards: The following standards appear

... surface can be transferred to plants or other living organisms. These organisms convert the heat energy into energy which can be consumed by living matter (i.e. humans and animals). Student Preconceptions: Possible misconceptions include: energy cannot change form; energy cannot be transferred via m ...
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... Fault-Block Mountains are formed by the movement of large crustal blocks when forces in the Earth’s crust pull it apart. Some parts of the Earth are pushed upward and others collapse down. Example: Grand Tetons ...
Structure of the Earth Study Guide with Answers
Structure of the Earth Study Guide with Answers

... 22) List the order of seismic waves as they reach a site from fastest to slowest. P WAVE, S WAVE, SURFACE WAVES 23) How fast do body waves move through the Earth? 11 KM/SEC 24) What are the layers of the Earth from inside out? INNER CORE, OUTER CORE, MANTLE, CRUST 25) What layer of the Earth is the ...
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Questions from the Video

... Answer the following questions from the Plate Dynamics Video 1. What is the San Andreas Fault comprised of? ...
Layers of the Earth PBL
Layers of the Earth PBL

... scale model of Earth’s interior, with an accompanying educational narrative script for their “From Crust to Core” tour exhibit. All requirements for the “From Crust to Core” competition are detailed in the accompanying application form. ...
WGCh2NotetakingKey
WGCh2NotetakingKey

... a. Volcanoes often form plate boundaries where one plate plunges below another. The rocky plate melts as it dives downward into the hot mantle. b. Volcanoes also arise in various hot spots, where deep within the Earth the temperature is hotter than normal. The ...
Ocean Floor
Ocean Floor

... Classification according to physical properties 3. Mesosphere - rigid but not as hard as lithosphere • higher temp than asthenosphere, but not molten because of compression pressure ...
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Age of the Earth



The age of the Earth is 4.54 ± 0.05 billion years (4.54 × 109 years ± 1%). This age is based on evidence from radiometric age dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.Following the development of radiometric age dating in the early 20th century, measurements of lead in uranium-rich minerals showed that some were in excess of a billion years old.The oldest such minerals analyzed to date—small crystals of zircon from the Jack Hills of Western Australia—are at least 4.404 billion years old. Comparing the mass and luminosity of the Sun to those of other stars, it appears that the Solar System cannot be much older than those rocks. Calcium-aluminium-rich inclusions – the oldest known solid constituents within meteorites that are formed within the Solar System – are 4.567 billion years old, giving an age for the solar system and an upper limit for the age of Earth.It is hypothesised that the accretion of Earth began soon after the formation of the calcium-aluminium-rich inclusions and the meteorites. Because the exact amount of time this accretion process took is not yet known, and the predictions from different accretion models range from a few millions up to about 100 million years, the exact age of Earth is difficult to determine. It is also difficult to determine the exact age of the oldest rocks on Earth, exposed at the surface, as they are aggregates of minerals of possibly different ages.
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