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Snow Ball Earth between 750 and 600 million years ago.
2 Billion years ago O2 began forming in the atmosphere
CO2 has been a driver of Climate for Millions of years. (phanerozoic 550 Mya to present) There have been large ice sheets during the Phanerozoic ~300 Mya Our present Ice age began around 2 MYa
Most of the past 200 Myr has been very warm and dominate by a greenhouse Earth. Our present state (the Pliestocene began about 2 Myr ago)
K-T boundary ~ 65 Million years ago. End of Dinosaurs. Evidence suggests Asteroid impact cause global cooling for several years
Shock patterns in quartz
Chicxulub (Chik-shoo-loob) impact crater Near Cancun, Mx. tail of the devil??
Snowball Earth. Snow Ball Earth between 750 and 600 million years ago.
Our Changing World 2.5. Our Changing World Earth’s daily rotation is easily visible in the light Weather changes are obvious with lightning and snow/rain.
Milankovitch, 1937 Orbital Theory of Ice Ages 3 dominant pacemakers of climate change Eccentricity: 100,000 year cycle Obliquity: 41,000 year cycle Precession:
Craters and impacts in the solar system starlight team.
By: Jarreau Question#1 My question is how are craters formed on the moon?
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.
+ Unit B: Life Over Time Chapter 1: The History of Life on Earth Chapter 2: Classification of Living Things Chapter 3: Population Dynamics.
Climate Change. I. The Earth's Climate has changed many times, due to natural causes. **There have been at least 4 Ice Ages in the last 3 million years.
Is there a difference?. Climate Vs. Weather Climate Long-term weather patterns of an area Weather Current state of the troposphere Short term variations.
Small Celestial Bodies By: Kassem Khalife & Akram Gelan.
Early Paleozoic, Cambrian- Ordovician, The Age of Invertebrates Written By: Garrett Wiska and Jordan Yono Earth Science, Period 6 Fr. ONeill C.S.B
Earths History __________________ - a timeline that organizes the events in Earths history Like a calendar extending from Earths formation to the present.
The Geological Time Scale Recognize the relationship among the unitsera, epoch, and periodinto which the geologic time scale is divided Illustrate.
1 The Global Climate Perspective Key learning outcomes 1.To understand key components of the greenhouse effect 2.To understand the influence of humans.
Geologic Time 1 Add this unit to your Table of contents!
Our Changing Earth. What is a Theory? In science, its almost the same as a fact Must be some sort of evidence to support a theory Even with evidence there.
Minor Members of the Solar System Chapter 23, Section 4.
Continental Drift Chapter 10, Section 1. Continental Drift Theory that states that all continents slowly move through time. –Suggests that all continents.
160,000 Years Carbon dioxide and global temperature are highly correlated. Temperatures of the past 160,000 years have varied greatly between ice ages.
Volcanoes. Volcanic aerosol loading Volcanic eruptions near the equator, large explosive energy, and high in SO2 gas influence (cool ) surface temperatures.
* There are 8 planets in our solar system, and one dwarf planet. * Our sun is in the middle of our solar system.
Comets Loose collections of ice, dust, and small rocky particles Orbits are usually very long, narrow eclipses When orbit come close to Sun, it.
History of Life on Earth The origin of life, followed by a whirlwind tour of the past 4.6 billion years of history. Starting from the beginning, as it.
BY: JOSEPHINE. WHAT CAUSED THE ICE AGE? The temperature dropped which caused the winds to flow around the earth in different directions.
GA plants, Fall 2008 GA vegetation in the past 10 million years Lecture notes for PBIO 3650: Natural History of Georgia Plants Fall 2008 Dr. Chris Peterson.
Collisions from Space. Craters are formed when meteorites hit the surface of a planet or moon. The size of the crater is directly related to the mass.
What else is in our solar system, besides the sun, the planets, and their moons ?
The Ice Age Section Objectives Describe the climatic cycles that exist during an ice age. Identify and summarize the theory that best accounts for the.
BY JACOB INDOVINO. Pluto is a dwarf planet. It has three moons one is BIG and two are small.
Science Language and Vocabulary ASTRONOMY. axis of rotation The spinning of objects around an imaginary center line.
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