• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Geology and Nonrenewable Mineral Resources G. Tyler Miller`s
Geology and Nonrenewable Mineral Resources G. Tyler Miller`s

... Three major zones of the earth are the core, mantle, and crust. The crust is soil and rock that floats on a mantle of partly melted and solid rock. The core is intensely hot. It has a solid inner part surrounded by a liquid core of molten or semisolid material. The mantle is a thick, solid zone. It ...
The Physical World - Streetsboro City Schools
The Physical World - Streetsboro City Schools

... Earth’s Structure (cont.) • Many scientists believe that most of the landmasses forming our present-day continents were once part of one gigantic supercontinent called Pangaea. • Due to continental drift, they slowly separated. • Due to plate tectonics, the physical features of the planet are cons ...
Brainpop - Plate Tectonics
Brainpop - Plate Tectonics

Inside the Restless Earth
Inside the Restless Earth

... 1. Sketch and label the layers of the Earth. Be sure to include: crust, lithosphere, asthenosphere, mantle, outer core and inner core. ...
Ch 17 PowerPoint
Ch 17 PowerPoint

... Plate Tectonics = the theory that the Earth’s surface is made up of large moving plates. • Alfred Wegner studied world maps and hypothesized about Pangea – a supercontinent that he believed existed in history and split into the current continents. ...
Chapter 2 – Plate Tectonics
Chapter 2 – Plate Tectonics

... Early earth was molten and the densest material was pulled to the center of the earth by gravity. differentiation The earth slowly cools, thin crust hardens and water condenses into liquid. The earth just happens to be the right distance from the sun. No water no life! ...
Weather vs Climate
Weather vs Climate

... hot and dry. In Canada, the weather changes, sometimes dramatically from day to day. Weather data has been collected since the 1800’s, using weather stations, weather balloons, aircraft, and satellites. Interactions between water, air and land on Earth and energy from the Sun all contribute to weath ...
Lithosphere and Asthenosphere
Lithosphere and Asthenosphere

... The mantle is Earth’s thickest layer, measuring nearly 2900 kilometers (1700 mi). It is made of hot rock that is less dense than the metallic core. The very top part of the mantle is cool and rigid. Just below that, the rock is hot and soft enough to move like a thick paste. The crust is a thin laye ...
Observing Convection Currents
Observing Convection Currents

... Convection cannot take place without a source of heat. Heat within the Earth comes from two main sources: radioactive decay and residual heat. Radioactive decay, a spontaneous process that is the basis of "isotopic clocks" used to date rocks, involves the loss of particles from the nucleus of an is ...
Earth Systems Science - University of Southern Indiana
Earth Systems Science - University of Southern Indiana

... In 1990- the Earth-Moon-Sun arrangement similar to 18111812, the year of the big earthquakes in the midwest US “Projection” - on Dec 3, 1990 (± 5 days) some type of cataclysmic event will occur somewhere on Earth between 30 and 60° N Latitude: ~75% chance of big quake on New ...
Geology Study Guide
Geology Study Guide

... Based on the chart above, if the trend continues and a rock is 5,000,000 years old, about how many kilometers from the mid-ocean ridge would this rock be found? ...
Catastrophic Events – Parts 1-3
Catastrophic Events – Parts 1-3

... c. Water vapor only d. Only a and b e. a, b, and c. 3. Which statement is an accurate comparison of the temperature and amount of oxygen at the base of a mountain compared to the top of the mountain? a. The base will be warmer and there will be more oxygen than the top b. The base will be warmer and ...
Chapter Review - Oakman School News
Chapter Review - Oakman School News

... zone, the lithosphere is denser than it is at a mid-ocean ridge. Convection causes oceanic lithosphere to move away from the mid ocean ridge. Oceanic lithosphere is also higher at a mid-ocean ridge, so oceanic lithosphere moves down toward the subduction zone because of gravity. Answers will vary. T ...
Ch. 14 zebra - new one
Ch. 14 zebra - new one

... are found in upper layers and older fossills are found at lower layers.  Youngest ? Oldest ? ...
Name
Name

... converge. Include the landform and seafloor features that result. Give two examples of where this occurs (or has occurred in the past) on earth. Describe what happens when an oceanic plate converges with a continental plate. Include the landform and seafloor features that result. Give two examples o ...
Fundamental Concepts in Igneous Petrology
Fundamental Concepts in Igneous Petrology

... image source: Press and Siever (2001) ...
File Vocabulary
File Vocabulary

... heat act to break down rocks ...
Review and Reinforce
Review and Reinforce

... 3. The rock is squeezed so tightly that the appearance, , and crystal structure of the rock’s minerals change, creating metamorphic rock. Answer the following questions on a separate sheet of paper. 4. Describe what a metamorphic rock is. 5. Describe a situation in which heat can change rock to meta ...
C3 Lesson 5 Review and Reinforce worksheet
C3 Lesson 5 Review and Reinforce worksheet

... 1. Collisions between Earth’s plates push rock down toward the heat of Earth’s __________________. 2. As the rock is buried deeper in the crust, _________________ as well as heat increases on the rock. 3. The rock is squeezed so tightly that the appearance, ________________, and crystal structure of ...
Chapter 2 Canada*s Physical Landscape
Chapter 2 Canada*s Physical Landscape

... and either. In this case the edge of one plate may slide under another plate and be destroyed or the edge of two plates may rise up and form mountains. Subduction zone may be created. This is were on plate slide under another and may cause volcanoes and earthquakes ...
11.30-plate-tectonics
11.30-plate-tectonics

... • Rarely/never subducted • Oldest crust on Earth ...
Earth`s Layers Review
Earth`s Layers Review

... - Definition: a property of matter representing the mass per unit volume - AKA- the amount of “stuff” in a given space - Example: limestone is more dense than water, _________________________ Tectonic plates - Solid and found in the _______________________ - Move around on top of the _______________ ...
Jones County Schools 2nd Nine Weeks 6th Grade Social Studies
Jones County Schools 2nd Nine Weeks 6th Grade Social Studies

... The diagram below shows some of the layers of rocks found in the Grand Canyon. Scientists find these layers of rock useful for studying fossils. ...
Earth`s Crust in Motion
Earth`s Crust in Motion

... • How rocks move determines how much friction there is between opposite sides of the fault. • Friction- a force that opposes the motion of one surface as it moves across another. – It exist because surfaces are not perfectly smooth. ...
FCIM Assesment sc912e61
FCIM Assesment sc912e61

... FCIM Assessment SC.912.E.6.1 ...
< 1 ... 268 269 270 271 272 273 274 275 276 ... 413 >

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.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report