PPT-The Moon: Geologic History and

Future Exploration What we knew about the Moon before Apollo Apollo Missions Astronaut activities on the lunar surface Caring for the Samples on Earth Discoveries about the Moon The Highlands Discoveries about the Moon The Maria. The BIG Idea. Students will understand that the appearance of the moon changes in a predictable cycle as it orbits Earth and as Earth rotates on its axis.. Objective 1:. Explain patterns of changes in the appearance of the moon as it orbits Earth. . Chapter 7 lesson 4. What is the geologic time scale?. Geologists use the geologic time scale to show Earth’s history.. It is a record of the geologic events and the evolution of life forms as shown by the fossil record.. In depth: chapter 19. Geologic Time Scale. Examining layers of sedimentary rock, scientists have put together a chronology of Earth’s history.. It is divided into 4 Eras:. 1. Precambrian (3.5 . bya. Geological “Clocks”. Geologic time determination is subdivided into 2 categories:. Relative Dating: simply determines whether or not an event occurs before or after another event (e.g. a granite dike is younger than the surrounding sandstone since it intrudes across the sandstone in an outcrop).. The geologic time scale divides Earth’s long history into units of time…. Eras. .  . Periods. .  . Epochs. Eras. are divided into . P. eriods. .. Periods. are divided into . Epochs. .. Precambrian. Jacob Bleacher. Goddard Space Flight Center. 3. rd. Affordable Mars Workshop. Dec. 2, 2015. Geologic field work can be loosely defined as the body of work necessary to:. Determine the spatial distribution, age and attitude of the rock types within an area. Section 12.1 Discovering earth’s history. Uniformitarianism – the idea that physical, chemical, and biological laws that operate today also operated in the past; the present is the key to the past.. a. Fossils. 3. Geologic Time Scale. 4. Geologic Belts. 5. NC Geologic History. How do we know . geologic . history. ?. Earth's History. Earth's history spans over a length of . 4.5 billion . years. Geologists have divided that time into units based on major geologic events and life forms. La gamme de thé MORPHEE vise toute générations recherchant le sommeil paisible tant désiré et non procuré par tout types de médicaments. Essentiellement composé de feuille de morphine, ce thé vous assurera d’un rétablissement digne d’un voyage sur . Geologic Time and Evolution Earth Has a History Geologic materials record enormous changes. Earth is a complex, evolving system. Physical and biological systems continuously interact. Earth constantly changes and has done so through time. The Moon Topographic map from Lunar Reconnaissance Orbiter Basic data Radius 0.27 of Earth’s Mass 0.01 of Earth’s Orbits Earth with period 27.3 days Revolves on its axis with this period: tidally locked so one face always points towards the Earth Normally we think of time in terms of days or years but geologists commonly refer to events that happened millions or billions of years ago. For example earth is approximately 4.6 billion years old. GEOLOGIC TIME. Michelle Kirchoff. Southwest Research Institute. Center for Lunar Origin and Evolution. Southwest Research Institute in Boulder. http://. www.boulder.swri.edu. /. Center for Lunar Origin and Evolution (CLOE). What is it and Why do we care? . What is the geologic time scale? . . Geologic Time Scale:. A record of the Earth’s . history broken up into . various units of time that. are based on types of . fossils contained within .