Starting pointteaching entry level geoscience socratic questioning socratic questioning examples earth history and time. All the activities run on multitouch devices with windows 78 operating system. We believe that earth life s choice of chirality was purely random, and. Origin and evolution of earth research questions for a changing planet questions about the origins and nature of earth have long preoccupied human thought and the scientific endeavor. To understand evolution, humans must think in units of time much larger than those we use to define our lives. The layers of rock laid down over the eons resemble the chapters of a book. This timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet earth. The end of the paleozoic was a time of mass extinction amongst earths life forms. Evolution is the process by which humans and other life forms on earth have survived.
Yet, as life has shown to do throughout history, it continued on living. Timeline of the evolutionary history of life wikipedia. Astr 380 the history of the earth university of maryland. Every year on april 22, earth day marks the anniversary of the birth of the modern environmental movement in 1970. Geological timeline activity significant developments and extinctions of plant and. The marks the development of life forms of increasing complexity, including reptiles, dinosaurs, small mammals, birds, conifers, cycads, and flowering plants, from 248 million through 65 million years ago. A series exploring the natural history of earth, beginning with the formation of our solar system, moving on through asteroid impacts and mass. Part 1 of the activity is based on the activity described in hermann and lewis, 2004, a formative assessment of geologic time for high school earth science students, journal of geoscience education, v. Imagine cameras have been around since the creation of earth to record every major event. Humans appear on earth 2 or 3 millions years ago humans learn to make metal tools 5000 bc.
Jun 05, 2012 imagine cameras have been around since the creation of earth to record every major event. The early earths atmosphere lifes interaction with the atmosphere. The mesozoic middle life era precedes the cenozoic era. The history of oxygen gas in the earths atmosphere sums up the history of life. We have plans for webbased development for these activities during the 20 2014 time frame. Learn more about how earth formed, the early history of life on earth, and the origins of humans. After all, evolutionary change occurs too slowly to be measured in days, months, or years.
The evolution and complete timeline of life on earth. History of life on earth biology science khan academy. A natural history of the first four billion years of. Enhance your preparations for a test or boost your grades by using fun lessons and short quizzes to deepen your. A brief history of life on earth erlenbecks science room.
Because of this, biology alone cannot fully explain the evolution of life on. In order to be able to find life outside our earth, we have to understand life in our own planet. To begin this chapter, give some examples of macroevolution. In biology, evolution is any change across successive generations in the heritable characteristics of biological populations. History of life on earth adapted from holt biology 2008. The book drifts between stories of the authors paleontological expeditions and a discussion of theories of the history of life on earth.
They were preempted by a mass extinction event that shattered all life on earth. We will first talk about tools fossil dating and theories, continental drift that help us understand our past. Geologic history of earth, evolution of the continents, oceans, atmosphere, and biosphere. You will then connect your card to a timeline of earth history, attaching it in the appropriate location. Siyavulas open life sciences grade 10 textbook, chapter 10 on history of life on earth covering impact of humans on biodiversity and the environment. In order to be able to find life outside our earth, we have to. The origin and evolutionary history of life on earth i.
We believe that earth lifes choice of chirality was purely random, and. What is the most recent eon of the geologic time scale, and what eras does it include. The history of our planet along with clues about its future is written in the layers of rock. As you learn about past events in earth history you may be surprised. Life over time living things, like earth itself, change over time. Spontaneous generation principle that living things could arise from biogenesis principle that states that all living things come from other living things experiments on spontaneous ii. As we prepare to mark 50 years of earth day in 2020, lets take a look at the last halfcentury of mobilization for action. In earths history, species have lived and died, the climate has. Our planet has an amazing history spanning about 4.
Exploring the moon a teachers guide with activities, nasa eg199710116hq i. History of life on non living things earth where does life on earth come from. This history of life on earth lesson plan is suitable for 7th 10th grade. Chapter 12 history of life on earth 251 opening activity to help students visualize the enormity of one billion of anything, ask students if they could physically carry one million dollars. In this chapter we will learn about the history of life on earth.
This cosmic time scale for the evolution of life has important consequences. Pdf an extrapolation of the genetic complexity of organisms to earlier times. Studying the history of life on earth is simple using this entertaining overview. Development of the geologic time scale the changes to life and earth that have occurred throughout earths history are recorded on a time line called the geologic time scale. To understand the major events that shaped earth, including the origin and evolution of its lithosphere, atmosphere, and hydrosphere. Life on earth includes four multitouch activities designed to advance peoples understanding of biodiversity and the history of life on earth. The origin and evolutionary history of life on earth. Earth history and history of life on earth biology 1510. A brief, interactive history of life on earth can be found here. The history of life as found in traces or remains of. Chemical conditions of the early earth that could have fostered the origin of life a. Include at least one novel example not in your text. History of life on earth lesson plan for 7th 10th grade. The geologic time scale we use to study the history of the earth and of it life forms is.
Including earth sun expands to red giant end of life on earth universe eventually cold dark high energy particle reactions big bang the universe has expanded and cooled ever since stargazing live is a bbc and open university co. Relative dating a method for determining whether an object. Although there is some evidence of life as early as 4. What is the basis for divisions of the geologic time scale. Pdf this chapter covers the different theories about the steps toward the origin and evolution of life on.
A timeline for the very early history of the earth. It is divided into three eras well known for their chronicle of life in the fossil record. Scientists expect most life in the universe to be simple. Humans have impacted the biodiversity and environment in several crucial ways.
The evolutionary history of life on earth traces the processes by which living and fossil organisms evolved, from the earliest emergence of life to the present. Offering comprehensive content for the historical geology course, historical geology provides students with an understanding of the principles of historical geology and how these principles are applied in unraveling earth s history. Geology, astronomy, and the evolution of life on earth. Astr 380 the history of the earth the real purpose of stonehenge.
Formation of the moon end of the heavy bombardment snowball earth possible origin of. Sadly, i came to the book in a search for current information about the history of life on earth and was disappointed. Origin and evolution of earth the national academies press. To establish a context for understanding the origin and evolution of life on earth.
Take a photographic journey thorough time from the violent birth of our planet four and a half billion. Origin and evolution of earth national academies press. Pdf the early evolution of the planet earth and the origin of life. Next we will look at the geological timescale and discuss three major eras. One isotope commonly used to infer evidence of biological activity is c.
In this pack you will find information and activities to help your class grasp the concept of geological time, just how old. Students will learn and understand the underlying causes of why things happened and the way they did, and how all. To develop a sense of geologic deep time and the ways in which earth scientists construct the geologic time scale. If any life is found in our solar system beyond earth, it is likely to be simple. Rock detectives or as they prefer to be called, geologists study these clues about the past and can also observe earths current changes firsthand. Aug 24, 20 on earth, oxygenic photosynthesis continually replenishes the oxygen consumed by respiration and other oxidative processes e.
The broad term used to describe this effect is known as the anthropogenic effect discuss with the learners the activities that humans are involved in and how these activities contribute to the changes in the environment. Constraining the time interval for the origin of life on earth arxiv. Each eon saw the most significant changes in earth s composition, climate and life. Throughout the last century, the origin of life began to be approached. The first photosynthetic organisms probably evolved around 3400 million years ago, extremely early in the evolutionary history of life, when all forms of life on earth were microorganisms and the atmosphere had much more carbon dioxide. If the reader is actually attempting to learn what fortey knows about that history he is. Fossil record the history of life as found in traces or remains of living things adapted from holt biology 2008. Life through history students book prehistory introduction. The history of earth is divided into four great eons, starting 4,540 mya with the formation of the planet. Opening activity draw a picture of what you think earths first life form may have looked like and label the parts of the organism. Impact of humans on biodiversity and the environment.
Each eon is subsequently divided into eras, which in turn are divided into periods, which are further divided into epochs. Decay the half life of uranium is 760 million years. Around a third of life on planet earth was wiped out, marking a huge fork in the timeline of life on earth. Deciphering the planets history and processes could improve the abil. The history oflife on earth evidence of the past 2. In the last chapter, you were asked about macroevolution. A brief history of life on earth in this activity, you will create a card that describes one of the seminal events in the history of life on earth. Deciphering the planets history and processes could improve the ability to predict catastrophes like earthquakes and volcanoes, to manage earths resources, and. Lizzie coyle presents the latest thinking on how life evolved to the diversity of species we have today. Pdf from the origin of life on earth to life in the universe. Take a photographic journey thorough time from the violent birth of. Answers may vary, but possible examples in the text include change in the emergence of. Key concepts earth has been home to living things for about 3. This interactive module explores key events in the record of life on earth, which stretches over three billion years.
The layers of rock at earths surface contain evidence of the evolutionary processes undergone by these components of the terrestrial environment during the times at which each layer was formed. The activity is authored by heather petcovic, western michigan university. Jan 31, 2016 lizzie coyle presents the latest thinking on how life evolved to the diversity of species we have today. Model of earth history bringing earth science to life 7 surface processes students produce a scale of significant events in earth history. Exploring the moon a teachers guide with activities, nasa eg199710116hq v about the slide set the collection a set of thirtysix 35mm slides has been assembled to complement the activities in this book exploring the moon. On earth, oxygenic photosynthesis continually replenishes the oxygen consumed by respiration and other oxidative processes e. The chemistry of life and the different processes during the formation and evolution of the earth have played a crucial role. Overview the formation of earth prebiotic chemistry millerurey exp. Opening activity draw a picture of what you think earths first life form may have looked like and. The evolution lab is a great resource for educators who are beginning an evolution unit because it addresses the mechanisms of evolution and teaches students how to build and read phylogenetic trees.