Gen Biology 2 Quarter 3 Lesson: The Geologic Time Scale PDF

GENERAL BIOLOGY 2 Quarter 3 Good day!  REMINDERS!! ALWAYS wear your face masks. FREQUENTLY sanitize your hands and/or use alcohol. AVOID unnecessary chatting with seatmates. KEEP mobile phones/gadgets temporarily.  CLASS PRAYER Father God,...

GENERAL BIOLOGY 2 Quarter 3 Good day!  REMINDERS!! ALWAYS wear your face masks. FREQUENTLY sanitize your hands and/or use alcohol. AVOID unnecessary chatting with seatmates. KEEP mobile phones/gadgets temporarily.  CLASS PRAYER Father God, Come be with us today. Fill our hearts with joy. Fill our minds with learning. Fill our lesson with fun. Fill our classmates with kindness. Fill our classroom with peace. Fill our school with love. Amen. Who’s IN? Who’s OUT?  REVIEW Q. What are the recent genetic engineering developments? FQ. How does these developments affect different fields of life?  LESSON OBJECTIVES a. Differentiate the different divisions of the geologic time scale; and b. Discuss the major events and life forms related to each divisions of geologic time scale.  MELC: Describe general features of the history of life on Earth, including generally accepted dates and sequence of the geologic time scale and characteristics of major groups of organisms present during these time periods. STEM_BIO11/12-IIIc-g-8  ACTIVITY 1 Diagram Analysis Direction: Learners analyze the given diagram and share the ideas infer.  ACTIVITY 2 Fill It In Direction: Learners fill in the blank with the correct letters to reveal the term/s described/defined in each item.  E S The largest division of the Geologic Time Scale. (Hadean, Archean, Proterozoic, and Phanerozoic)  E S Represent major intervals of time within an eon. (Paleozoic, Mesozoic, and Cenozoic)  P R D Subdivisions of eras and represent smaller intervals of time. (Ex. Paleozoic Era - Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian.)  E P H Even smaller divisions of time within periods. (Ex. Quaternary Period – Holocene, Pleistocene)  A S The smallest divisions of the Geologic Time Scale.  Lesson 4: The Geologic Time Scale  The Geologic Time Scale The Geologic Time Scale is a system used by scientists to divide Earth's history into different time periods based on major geological and biological events. It provides a framework for understanding the sequence of events that have shaped our planet over billions of years.  Divisions of the Geologic Time Scale The Geologic Time Scale is divided into several hierarchical divisions, including eons, eras, periods, epochs, and ages. Each division represents a significant interval of time and is characterized by distinct geological and biological features. Divisions of the Geologic Time Scale  Divisions of the Geologic Time Scale Eons - The largest division of the Geologic Time Scale is the eon. - There are four eons recognized: the Hadean, Archean, Proterozoic, and Phanerozoic. - The Phanerozoic eon is the most recent and is further divided into three eras. Divisions of the Geologic Time Scale  Divisions of the Geologic Time Scale Eras - Eras represent major intervals of time within an eon. - The three eras of the Phanerozoic eon are the Paleozoic, Mesozoic, and Cenozoic. - Each era is characterized by significant geological and biological events. Divisions of the Geologic Time Scale  Divisions of the Geologic Time Scale Periods - Periods are subdivisions of eras and represent smaller intervals of time. - For example, the Paleozoic era is divided into six periods: the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian.  Divisions of the Geologic Time Scale - Each period is marked by distinct geological and biological changes. Divisions of the Geologic Time Scale  Divisions of the Geologic Time Scale Epochs - Epochs are even smaller divisions of time within periods. - They represent relatively short intervals of time and are characterized by specific geological and biological events. - The current epoch is the Holocene, which began around 11,700 years ago. Divisions of the Geologic Time Scale  Divisions of the Geologic Time Scale Ages - Ages are the smallest divisions of the Geologic Time Scale. - They represent the shortest intervals of time and are often defined by specific geological or biological markers.  Divisions of the Geologic Time Scale - Ages are used to further refine the timing of events within epochs and periods. Major Events and Life Forms Associated with Different Divisions of the Geologic Time Scale: - Hadean Eon: Formation of Earth, intense volcanic activity. - Archean Eon: First evidence of life, formation of continents. Major Events and Life Forms Associated with Different Divisions of the Geologic Time Scale: - Proterozoic Eon: Oxygenation of Earth's atmosphere, development of complex life forms. Major Events and Life Forms Associated with Different Divisions of the Geologic Time Scale: - Paleozoic Era: Explosion of life forms in the oceans, colonization of land by plants and animals. - Mesozoic Era: Age of dinosaurs, emergence of flowering plants. Major Events and Life Forms Associated with Different Divisions of the Geologic Time Scale: - Cenozoic Era: Rise of mammals, evolution of humans. Major Events and Life Forms Associated with Different Divisions of the Geologic Time Scale: - Cambrian Period: Rapid diversification of marine life, emergence of complex organisms. - Jurassic Period: Dominance of dinosaurs, evolution of birds. Major Events and Life Forms Associated with Different Divisions of the Geologic Time Scale: - Holocene Epoch: Development of human civilizations, significant climate changes.  Divisions of the Geologic Time Scale These examples illustrate the vast expanse of time covered by the Geologic Time Scale and the major events that have shaped Earth's history. By studying the Geologic Time Scale, scientists can gain insights into the evolution of life, the formation of continents, and the changing climate of our planet. Questions?  ACTIVITY 3 You Complete Me Direction: Learners complete each of the given statements by filling out the blanks of the correct terms required.  The __________ is a system used 1 by scientists to divide Earth's history. Each division of Geologic Time Scale represents a significant interval of time 2 and is characterized by distinct _____ and _____ features.  The Geologic Time Scale is 3 divided into several hierarchical divisions, including eons, _____, periods, _____, and ages. Studying the Geologic Time Scale, we can gain insights into the __________, 4 the formation of continents, and the changing climate of our planet.  The current epoch is the 5 Holocene, which began around __________ years ago.  Application Q. To which activity /scenario in your daily life can you relate the concepts discussed?  Let’s Wrap Up! Sum up the lesson through completing the statements based on the discussion: a. Divisions of the geologic time scale are… b. Examples of major events and life forms are…  ENRICHMENT Direction: Do advance study and research regarding: The Geologic Time Scale: Major Groups of Organisms THANK YOU!