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Theory of Plate Tectonics
Theory of Plate Tectonics

... 1912-Continental Drift Theory – Wegener noticed that there were similar glacial deposits in South America and Africa. He also found that fossils often indicated a climate very different from the climate of today , such as fossils of tropical plants found on an Arctic island, Fossil remains of a spec ...
ES18-Understanding the Asthenosphere
ES18-Understanding the Asthenosphere

EARTH, ATMOSPHERIC, OCEAN AND PLANETARY SCIENCES
EARTH, ATMOSPHERIC, OCEAN AND PLANETARY SCIENCES

... In extensional tectonic regimes of the Earth we commonly observe ...
Midterm Exam - Heritage Collegiate
Midterm Exam - Heritage Collegiate

... 2. Which statement best represents how relative time is correctly used in Earth Science? (A) Dinosaurs became extinct 65 million years ago. (B) Dykes and sills are younger than surrounding rock. (C) The rock is 500 million years old. (D) The rock unit above is older than the rock unit below. 3. Volc ...
Conclusion EARTH: The Ever-Changing Planet
Conclusion EARTH: The Ever-Changing Planet

... many different surfaces. The final activity that I did was the layers of the earth. I believe that the book demonstrated this topic the best. Each layer from the core, to the mantle, to the crust, was illustrated with great detail. In addition to the illustrations, there were text boxes that gave im ...
A fault is a CRACK in the Earth. 1. A tsunami is a giant wave formed
A fault is a CRACK in the Earth. 1. A tsunami is a giant wave formed

... 1. A  tsunami  is  a  giant  wave  formed  from  an   EARTHQUAKE  on  the  ocean  floor.   2. How  far  a  place  is  above  sea  level  is  its  ALTITUDE.   3. Volcanoes  and  earthquakes  both  happen  at  the  edges   of  TECTONI ...
Earth`s Interior - Newton.k12.ma.us
Earth`s Interior - Newton.k12.ma.us

Studyguide
Studyguide

...  ____________________ is the process of wearing away rocks by natural means  Blowing wind can cause sand to hit rock and over time the sand will wear away the rock by breaking it into smaller pieces Changes Caused by Moving Water  Water can change Earth’s surface by carrying soil and small pieces ...
layers-of-the-earth-d-rl-2016
layers-of-the-earth-d-rl-2016

... 7. Why are tectonic plates like the pieces of a jigsaw puzzle? _______________________________________________________________ _______________________________________________________________ 8. What are the two kinds of crust that a tectonic plate may contain? _______________________________________ ...
The importance of the Earth`s biosphere in stabilizing the large
The importance of the Earth`s biosphere in stabilizing the large

Diapositiva 1
Diapositiva 1

... This molten material is called magma. It is less dense than the surrounding rock so it tends to move upwards through the crust. Magma also comes from material below the Earth’s crust, the mantle. This new material rises up from the mantle and adds to the magma produced from the molten crust. RETURN ...
course outline - UTSC - University of Toronto
course outline - UTSC - University of Toronto

... events possibly created by meteorite impacts. ...
PLATE TECTONICS Earth`s crust is broken into These plates float on
PLATE TECTONICS Earth`s crust is broken into These plates float on

... PLATE TECTONICS Earth's crust is broken into ________________ These plates float on top of the _________________ The phenomenon where heat rises until it cools to the point where it then falls again is _____________ Rock, under the earth's surface, that is heated to the point that it is liquid is ca ...
Geology and Earth Resources
Geology and Earth Resources

... • Less dense than core – Crust • Cool, lightweight, brittle outermost layer • Floats on top of mantle Tectonic processes ...
Interior of Earth
Interior of Earth

... interior of the Earth was composed of different material to the crust. We now differentiate the interior into two types of mantle (asthenosphere and lower mantle) and two types of core (outer and inner). The key to measuring the size of each of these regions is the study of seismic waves. ...
plate tectonics
plate tectonics

... – Central portions of oceans ...
Topic VI: The Dynamic Earth
Topic VI: The Dynamic Earth

... of young molten Earth ...
Constructive and Destructive Forces Study Guide
Constructive and Destructive Forces Study Guide

... Constructive and Destructive Forces Study Guide ...
Earth’s Layers
Earth’s Layers

... 1. I can list and identify the 3 types of rocks and explain how they are created 2. I can describe how the surface of the Earth is shaped by building up, weathering and erosion 3. I can identify the 3 layers of the Earth and their features 4. I can explain how and why plates move, the effects of the ...
File - Mr. Derrick Baker
File - Mr. Derrick Baker

... · Normal Fault · a fault in which rocks have moved down the slope of the fault · two normal faults occur parallel to each other, with plate in-between dropping down as plates move away from each other - forms rift valley · land between two parallel faults rises - forms block mountain ...
Plate Tectonics
Plate Tectonics

... During the 20th Century, scientists developed Wegener’s ideas and came up with the theory of Plate Tectonics. The theory of plate tectonics suggested that the crust of the Earth is split up into seven large plates (or ‘slabs’ of rock) and a few smaller ones, all of which are able to slowly move arou ...
Chapter 4
Chapter 4

... Chapter 4- Review 1) What is indirect evidence? 2) What are seismic waves? 3) How do geologist know about the Earth’s interior? 4) What happens to pressure and temperature as one descends through the Earth? 5) What is pressure? 6) Identify the four layers of the Earth from the outside and moving in. ...
The Structure of the Earth*s Interior
The Structure of the Earth*s Interior

... • The Earth's Crust is like the skin of an apple. It is very thin in comparison to the other three layers. The crust is only about 3-5 miles (8 kilometers) thick under the oceans (oceanic crust) the distance of here to Cosmopolis, and about 2530 miles (32 kilometers) thick under the continents (cont ...
Volcanoes are awesome manifestations of the fiery power contained
Volcanoes are awesome manifestations of the fiery power contained

What is geoscience? - Welcome to The College of Social
What is geoscience? - Welcome to The College of Social

... • a group of related disciplines focused on the Earth and its systems, history, and resources • it’s more than just rocks: geoscience also involves climate, plants, asteroids, fossils, archaeology, pollen, glaciers, lakes, etc. ...
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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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