'Asteroid impacts' diaporamas de présentation

Chapter 41 Reptiles

Chapter 41 Reptiles. Section 1 Origin & Evolution of Reptiles. History of Reptiles. Fossils & comparative anatomy suggest that reptiles arose from amphibians Earliest reptiles date 359-299 million years ago Many insects during this time period which served as food. History of Reptiles.

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Chapter 19

Chapter 19. Speciation and Macroevolution. Reproductive isolating mechanisms Prevent gene flow between species Prezygotic barriers Prevent mating or fertilization Postzygotic barriers Reproductive failure after fertilization. Temporal isolation Mating at different times of year

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Clark R. Chapman Southwest Research Inst. Boulder, Colorado, USA

Predicting and Comprehending Asteroid Impacts. Fertile Ground for Applications of Statistics. Clark R. Chapman Southwest Research Inst. Boulder, Colorado, USA. Invited Session: Prediction of Catastrophic Events.

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Asteroid Impacts

Asteroid Impacts. Chapter 39.10. Standard 1f. 1f: Students know the evidence for the dramatic effects that asteroid impacts have had in shaping the surface of planets and their moons and in mass extinctions of life on Earth. . Asteroids, Meteors, & Meteorites, oh my!.

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Investigating the Near-Earth Object Population

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The Earth-Moon-Sun System

The Earth-Moon-Sun System. The Earth has a few different motions associated with it. The two main motions are rotation and revolution . Rotation is the turning or spinning of a body on its axis. Revolution is the motion of a body, such as a planet or moon along a path around another body.

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Earthquakes

Amanda Embrey and Steven Bomar Chapter 8. Earthquakes. Even though we believe that earthquakes are just ground tremors, they are way more complex than that. In order to understand them more, we use seismology (the study of earthquakes). What are earthquakes?.

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Threats to Earth

Threats to Earth. P2g part 1 & 2. Objectives. In this lesson we should learn: about the properties of asteroids how asteroids have affected Earth in the past . Outcomes. Foundation Paper You should now be able to..

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Friday October 1, 2010

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Biodiversity

Biodiversity. Envirothon 2009. What is BIODIVERSITY. The variation of life forms within a given ecosystem, biome or for the entire Earth. Biodiversity is often used as a measure of the health of biological systems. En.wikipedia.org/wiki/Biodiversity

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How do Diamonds form?

How do Diamonds form?. How do diamonds form?. Diamonds form about 100 miles below the Earth's surface. In order for a diamond to be created, carbon must be placed under at least 435,113 pounds per square inch of pressure at a temperature of at least 752 degrees Fahrenheit (400 Celsius).

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The origins of Life

The origins of Life. Origin of the Solar System. Earth is estimated to be ~4.6 bill. yr old Evidence: Radiometric dating of rocks & meteors Nebula Hypothesis: Nebula: cloud of gas & dust in space Gravity pulled much material together (forming the Sun)

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7 th Science

7 th Science . 7 th SC - Tuesday 1/21/14. EQ: How did the oceans and atmosphere form? What conditions made early Earth able to support life? How did environmental changes affect the evolution of life? Make sure worksheets from Friday are complete and check them. Warm up 1/21.

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