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The Sea Floor - Mrs. Gallegos Website
The Sea Floor - Mrs. Gallegos Website

... Water Planet  71 % of globe is covered by oceans  Oceans are one interconnected system ...
The Earth-Moon System
The Earth-Moon System

... o Mars is dead, but it has not been dead as long as the Moon and Mercury have History of Earth’s atmosphere o Mercury and the Moon do not have atmospheres because of their weight (for all intents and purposes) o Earth’s and Venus’ atmospheres are very similar (primarily carbon dioxide) o Most of the ...
Land Formations - Library Video Company
Land Formations - Library Video Company

... Thought-provoking discussions provide a good way to assess the overall depth of student understanding. The following are some suggested discussion topics. • G i ven what you know about the Eart h ’s processes of land formation, predict what you think the Earth will look like in a few million years. ...
past exam questions - University of Idaho
past exam questions - University of Idaho

... B. Mars – Venus – Earth – Jupiter C. Moon – Venus– Mars– Earth D. Pluto – Saturn – Neptune – Uranus E. Mercury – Venus – Earth – Mars 2. The planets of the solar system that are geologically most similar to Earth are called the: A. Jovian planets B. terrestrial planets C. plutonian planets D. aster ...
Word - University of Idaho
Word - University of Idaho

... D. Jupiter – Saturn – Uranus – Neptune E. Mercury – Venus – Earth – Mars ...
Planet Earth in Cross Section
Planet Earth in Cross Section

The Earth Guiding Questions Minerals Telling Rocks Apart • How
The Earth Guiding Questions Minerals Telling Rocks Apart • How

... C The Moon is completely geologically dead. D The Moon is a very geologically active world. E None of the above can be derived from the ...
Earth as a System Section 1 Earth`s Interior, continued
Earth as a System Section 1 Earth`s Interior, continued

... • Earth formed about 4.6 billion years ago and is made mostly of rock. • Approximately 70% of Earth’s surface is covered by a thin layer of water known as the global ocean. • Earth is an oblate sphere, or a slightly flattened sphere. Earth’s pole-to-pole circumference is 40,007 km. Its equatorial ci ...
Earth`s Interior
Earth`s Interior

... 1. ________ metallic ore deposits) 2. Degree of isostatic equilibrium of a region ...
South Carolina Sample Questions 8th Grade Science
South Carolina Sample Questions 8th Grade Science

... 8th Grade Science ...
Revision summary presentation for C1 Earth Chemistry File
Revision summary presentation for C1 Earth Chemistry File

... other) (1) any two from: • vibration / (shock)waves (in the earth) or p and s waves (accept sudden jolts / slips) • caused by convection currents (in the mantle) • heat / energy released from radioactive processes ...
UNit 2 earth science quiz
UNit 2 earth science quiz

... one time in Earth’s history and thus have the ability to move (drift) A opening in the oceanic crust where molten materials from the mantle escape A plate boundary at which plates move toward each other and collide A long, narrow, deep ditch on the sea floor The name given to the land mass that exis ...
Topic 12 Earth`s Dynamic Crust and Interior
Topic 12 Earth`s Dynamic Crust and Interior

... Topic 12 Earth’s Dynamic Crust and Interior Lithosphere: Crust: Small Scale Crustal Changes Law of Original Horizontality: What are three ways that rock layers are changed? ...
The Structure of Earth - Mrs. wolfe`s 6th grade​ science classroom
The Structure of Earth - Mrs. wolfe`s 6th grade​ science classroom

... Continental drift – theory that the continents were at one or more times a single landmass that broke apart and eventually moved into the positions they are in today. ...
The Dynamic Earth - Moore Public Schools
The Dynamic Earth - Moore Public Schools

... • The mantle is the layer of rock between the Earth’s crust and core. (64% of the mass of the Earth) • The core is the central part of the Earth below the mantle, and is composed of the densest elements. ...
Constructive and Destructive Forces
Constructive and Destructive Forces

... can see scars across the landscape. Those scars appear when one block of land has moved compared to another. Roads often change their placement. They either become uneven or just crack. Streams can also change course. Sometimes rocks can fall and block the stream. Other times, the land is even lower ...
Earth Science Common Core Curriculum Standards
Earth Science Common Core Curriculum Standards

... fossil fuels found in Ohio, nationally and globally. Bowen’s Reaction Series must be used to develop an understanding of the relationship of cooling temperature, formation of specific igneous minerals and the resulting igneous environment. The focus is on knowing how to use Bowen’s Reaction Series, ...
Constructive and Destructive Forces
Constructive and Destructive Forces

... can see scars across the landscape. Those scars appear when one block of land has moved compared to another. Roads often change their placement. They either become uneven or just crack. Streams can also change course. Sometimes rocks can fall and block the stream. Other times, the land is even lower ...
SIO15 Final Exam, Friday Dec. 9, 2016 TEST VARIATION: 2
SIO15 Final Exam, Friday Dec. 9, 2016 TEST VARIATION: 2

Constructive and Destructive Forces
Constructive and Destructive Forces

... can see scars across the landscape. Those scars appear when one block of land has moved compared to another. Roads often change their placement. They either become uneven or just crack. Streams can also change course. Sometimes rocks can fall and block the stream. Other times, the land is even lower ...
Background Information for Plate Tectonics Rock Formation
Background Information for Plate Tectonics Rock Formation

... abrasive used for cleaning & polishing, Obsidian – heated to form perlite which is used in place of soil for starting seeds. b. Sedimentary rock forms when particles of other rocks or the remains of plants and animals are pressed and cemented together. This rock forms in layers below the surface.  ...
Earth and Ocean Sciences
Earth and Ocean Sciences

... awarded annually to a masters student enrolled at the University who, in the year of the award, is undertaking Level V courses in Earth Sciences, and who presents a conference paper at the annual Earth Sciences Student Conference, (organised by the Department), that is deemed to be outstanding in th ...
File
File

... energy and radiate it back to Earth. It functions like the roof of a greenhouse by letting solar energy to enter but preventing thermal energy from escaping. This is what keeps the Earth warm. • For the Earth to remain livable, the amount of energy received from the Sun and the amount of energy retu ...
What-do-you-know-about-rocks
What-do-you-know-about-rocks

... There are more than 3,000 different kinds of minerals on Earth. Each mineral is made up of a special chemical structure, which means it is the same material all through the mineral. In this way, minerals are different from rocks. A rock can be made up of many different minerals, so it is not the sam ...
Settle-Carlisle leaflet (pdf file)
Settle-Carlisle leaflet (pdf file)

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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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