PPT-Earth History

GEOL 2110 Lecture 2 Scales of Time and Change Major Concepts Geological events cover huge amounts of time that are hard to grasp in the span of human life We tend to focus on dramatic shortlived geologic events that we witness and are unaware of subtle but geologically important events . Phases are different views of the Moon’s sunlit half. The Lunar phases are the lit & unlit portions of the moon you see from Earth.. Light from the sun reflected by the Moon’s surface. The Moon’s position in its monthly orbit determines how it appears from Earth.. Do you REALLY believe?. ?. ?. . All the planets of the solar system came out of the Sun!!. Humans have been able to peep into the mantle!!. All the Interior of the Earth is in molten state!!. The Earth has only one North Pole!!. Standard. . S6E5. Students will investigate the scientific view of how the earth’s surface is formed. . a. Compare and contrast the Earth’s crust, mantle, and core including temperature, density, and composition. . Key terms:. Solstice: day when the sun appears farthest North or South of the equator. Northern hemisphere receives the most sunlight of the year around June 21 on the summer solstice.. Phase: shape of the moon you see from Earth.. Chapter 3. Earth-Sun Relationship. Chapter 3 – Section 1. Weather . Weather. – the condition of the atmosphere in one place during a limited period of . time. Ex. : looking out the window to see if you need an umbrella means you’re checking the weather. Sky Part II. Depending on the relative sizes and distances of the Sun and a moon, you might see an eclipse like this: . Sun. planet. moon. Solar Eclipses. Or you might see an eclipse like this:. Sun. The Earth is divided into three layers based on the compounds that makeup each layer. They are:. 1. Crust. 2. Mantle. 3. Core. The Crust. The Crust is the :. 1. outer most layer of the Earth.. 2. It is the thinnest layer.. 1. st. period. Solar Eclipse. Moon comes in between the Earth and Sun; annually (1x a year)- blocks sun. Can see the top layer of the sun (corona). Penumbra + Umbra (2 shadows). Most eclipses are partial eclipses. Unit 5 lesson 1. https://youtu.be/. KUU7IyfR34o. . I. Earth’s Days, Years, and Seasons. Vocabulary . Rotation. Day. Revolution. Year. Season. Equinox. solstice. What determines the length of a day?. Presented by Kesler Science. What are the main characteristics of the Earth’s layers?. How can the Earth’s layers be illustrated?. Essential Questions:. Earth's Layers. Earth’s Crust. The outer layer of the Earth. Oblate Spheroid. Bulges in. the middle. Earth’s Shape. 1. Right distance from the Sun. 2. Right amount of water. 3. Right amount of atmosphere. Why Does Earth Have Life?. The . rotation. of the Earth lasts for . How does the atmosphere support life?. The atmosphere allows us to breathe. Many different types of organisms need oxygen to perform life processes. Plants require carbon dioxide to undergo photosynthesis. . Conditions on early Earth made the Origin of Life possible.. Current theory about how life on Earth began.. Earth formed about 4.6 billion years ago.. Earth was too hot and still being bombarded by meteors, any water evaporated.. Eras of Earth’s History EQ: What causes changes in the Earth? How does knowing the past give us a VISION for the future? Precambrian Time Eon Precambrian Time Eon 4.6 billion years ago-545 million years ago