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Restless Earth Part 1: How and why do the earths tectonic plates
Restless Earth Part 1: How and why do the earths tectonic plates

... I am okay with this, some work needed ...
Supporting the theory of Plate tectonics
Supporting the theory of Plate tectonics

TECTONIC PLATE MOVEMENT Tectonic plates rest on the
TECTONIC PLATE MOVEMENT Tectonic plates rest on the

... and in the mantle just below it moves by convection currents. You have seen convection currents if you have ever boiled a pot of water. The water at the bottom of the pot heats up, becomes less dense, and rises. At the surface, it cools, becomes denser, and sinks, only to be heated and rise again. T ...
Chapter 28 Plate Tectonics Lab
Chapter 28 Plate Tectonics Lab

... Earth currently has 15 tectonic plates, 7 major and 8 minor. Using the features on the sea floor as illustrated on the bathymetric map, and the map on the last page of this lab, draw in and label the 15 tectonic plates on the laminated bathymetric map. Note that the bathymetric map and the map on th ...
Geology and Nonrenewable Minerals
Geology and Nonrenewable Minerals

... • Tsunamis can be detected through a network of ocean buoys or pressure recorders located on the ocean floor to provide some degree of early warning sent through emergency warning centers. – Between 1900 and 2010, tsunamis killed an estimated 280,000 people along the Pacific Ocean. – The largest los ...
The Layers of the Earth
The Layers of the Earth

... Earth's interior activity (prepare the contents of the bags and the corresponding information cards prior to Day 1. See Materials Section for instructions). 1. Students will gather materials (bags filled with different contents & labeled cards with characteristics of each layer). 2. Students will sa ...
holiday review packet - answer key
holiday review packet - answer key

... The theory states that 200 million years ago, the continents started breaking apart and drifted to their current locations. 7. Why didn’t people believe Alfred Wegener when he proposed continental drift (the answer is NOT that he did not have enough evidence) (textbook): Wegener said that fossils on ...
File
File

... 2. The Aleutian Islands off of the coast of Alaska lie at the edge of the Pacific Oceanic Plate. These islands move at a rate of about 5 cm per year. The islands are moving because __________. a. The North American plate is sinking into the ocean b. Earthquakes have pushed the plate as they shake th ...
Summary for MOON AND TERRESTRIAL PLANETS Mercury, Venus
Summary for MOON AND TERRESTRIAL PLANETS Mercury, Venus

... movement of Earth's outer layer by the process of plate tectonics. These plates are made of rock, but the rock is, in general, lightweight compared with the denser, fluid layer underneath. This allows the plates to float on top of the denser material. Movements deep within the Earth, which carry hea ...
Geology- Plate Tectonics (Study Guide) This week, you will create
Geology- Plate Tectonics (Study Guide) This week, you will create

... core and inner core. 3. Describe Alfred Wegener’s hypothesis of continental drift. What evidence did he use to prove his hypothesis? 4. Describe Earth’s crust and mantle. Be sure to discuss each layer’s thickness and density. Use the following terms: continental crust, oceanic crust, lithosphere, an ...
Dynamic Earth Interactive Web Quest
Dynamic Earth Interactive Web Quest

... What happens at divergent boundaries that are located along two continental plates? ___________________________________________________________________________ ___________________________________________________________________________ ________________________________________________________________ ...
Unit 1
Unit 1

... This unit deals with the basic aspects of the geology of the sea floor and points out its relevance to marine biology. The basic structural features of the ocean basins and the earth are described. The theory of plate tectonics is discussed as the mechanism for the creation of the sea floor and the ...
both squares
both squares

... STRUCTURE OF THE EARTH ACTIVITY In this activity you are going to build a model of the interior of the Earth and its surface. You will only be given one file folder and if you fail to follow the directions, you will not be given another one (although you may provide your own). You will have approxim ...
Chemistry: Atoms First, McMurry and Fay, 1st Edition
Chemistry: Atoms First, McMurry and Fay, 1st Edition

... Sea floor spreading is confirmed by – the ages of fossils in sediments overlying oceanic crust – radiometric dating of rocks on oceanic islands and floors. ...
Handout 2New - Glendale Community College
Handout 2New - Glendale Community College

... What was the original Biblical estimate of when the earth was formed? What is one of the most difficult aspects of understanding any study of the earth? What important question intrigued Hutton? What did he observe which helped answer his dilemma? What did he reason about unconformities, and what di ...
by Henry Simmons Before there was the Pangean supercontinent
by Henry Simmons Before there was the Pangean supercontinent

... and b y matching geological folds and other features, geologists have been able to reconstruct a clear and persuasive picture of the face of the earth as it was 200 million years ago, early in the Mesozoic era. At that time, almost all the earth's major land masses were crammed together as a single ...
If We Had No Moon
If We Had No Moon

Chapter 3 section 1 2015
Chapter 3 section 1 2015

... Section 1 ...
Chapter 15
Chapter 15

... earth’s crust consists of solid inorganic elements and compounds called minerals that can sometimes be used as resources. ...
Granite - AUSD Wikis
Granite - AUSD Wikis

... Quartz is one of the most common minerals in Earth’s crust. ...
Document
Document

... Inside the Earth • Right below Earth’s crust is the mantle, which is the thickest layer, making up about two-thirds of Earth’s mass. • The mantle contains some liquid rock but is mostly solid. High heat and pressure in the mantle cause it to flow like warm plastic. ...
OCN 201: Plate Tectonics II
OCN 201: Plate Tectonics II

... acting on base of the plate ...
Quiz 3
Quiz 3

... volcano d. superpository e. erosionary ...
Science multi-choice
Science multi-choice

... d. leaving the surface of the substance being heated. 32. Thermal blankets used by rescue teams have a silvered inner lining to… a. conduct heat towards the patient. b. reflect heat emitted by a person back towards her or him. c. absorb heat from the surroundings. d. emit excess heat from the patien ...
The Dynamic Crust
The Dynamic Crust

... measured on two different scales. • Magnitude is the amount of energy released during an earthquake and is measured using the Richter scale. ...
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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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