11 Earth and Life Science Quarter 1 – Module 1: Earth as the Only Habitable Planet Earth and Life Science – Grade 11 Self-Learning Module (SLM) Quarter 1 – Module 14: Earth as the Only Habitable Planet First Edition, 2020 Republic Act 8293, section 176 states that: No copyright shall subsist in any work of the Government of the Philippines. However, prior approval of the government agency or office wherein the work is created shall be necessary for exploitation of such work for profit. Such agency or office may, among other things, impose as a condition the payment of royalties. Borrowed materials (i.e., songs, stories, poems, pictures, photos, brand names, trademarks, etc.) included in this module are owned by their respective copyright holders. Every effort has been exerted to locate and seek permission to use these materials from their respective copyright owners. The publisher and authors do not represent nor claim ownership over them. Development Team of the Module Writer: Juven Q. Cantiller Editors: Juven Q. Cantiller Reviewers: Norma P. Rendon Illustrator: Ella Marie Corpuz, Graciel Monica V. Padre-i Layout Artist: Maylene F. Grigana Cover Art Designer: Ian Caesar E. Frondoza Management Team: Allan G. Farnazo, CESO IV – Regional Director Fiel Y. Almendra, CESO V – Assistant Regional Director Gildo G. Mosqueda, CEO VI - Schools Division Superintendent Diosdado F. Ablanido, CPA – Assistant Schools Division Superintendent Gilbert B. Barrera – Chief, CLMD Arturo D. Tingson Jr. – REPS, LRMS Peter Van C. Ang-ug – REPS, ADM Peter Van C. Ang-ug – REPS, Science Donna S. Panes – Chief, CID Elizabeth G. Torres – EPS, LRMS Judith B. Alba – EPS, ADM Norma P. Rendon – EPS, Science Printed in the Philippines by Department of Education – SOCCSKSARGEN Region Office Address: Telefax: E-mail Address: Regional Center, Brgy. Carpenter Hill, City of Koronadal (083) 2288825/ (083) 2281893 region12@deped.gov.ph 11 Earth and Life Science Quarter 1 – Module 1: Earth as the Only Habitable Planet 2 Introductory Message For the facilitator: Welcome to the Grade 11 Earth Science Self-Learning Module (SLM) on Waste Generation and Management! This module was collaboratively designed, developed and reviewed by educators both from public and private institutions to assist you, the teacher or facilitator in helping the learners meet the standards set by the K to 12 Curriculum while overcoming their personal, social, and economic constraints in schooling. This learning resource hopes to engage the learners into guided and independent learning activities at their own pace and time. Furthermore, this also aims to help learners acquire the needed 21st century skills while taking into consideration their needs and circumstances. In addition to the material in the main text, you will also see this box in the body of the module: Notes to the Teacher This contains helpful tips or strategies that will help you in guiding the learners. As a facilitator you are expected to orient the learners on how to use this module. You also need to keep track of the learners' progress while allowing them to manage their own learning. Furthermore, you are expected to encourage and assist the learners as they do the tasks included in the module. For the learner: Welcome to the Grade 11 Earth and Life Science Self-Learning Module (SLM) on Waste Generation and Management! The hand is one of the most symbolized part of the human body. It is often used to depict skill, action and purpose. Through our hands we may learn, create and accomplish. Hence, the hand in this learning resource signifies that you as a learner is capable and empowered to successfully achieve the relevant competencies and skills at your own pace and time. Your academic success lies in your own hands! This module was designed to provide you with fun and meaningful opportunities for guided and independent learning at your own pace and time. You will be enabled to process the contents of the learning resource while being an active learner. This module has the following parts and corresponding icons: What I Need to Know This will give you an idea of the skills or competencies you are expected to learn in the module. What I Know This part includes an activity that aims to check what you already know about the lesson to take. If you get all the answers correct (100%), you may decide to skip this module. What’s In This is a brief drill or review to help you link the current lesson with the previous one. What’s New In this portion, the new lesson will be introduced to you in various ways such as a story, a song, a poem, a problem opener, an activity or a situation. What is It This section provides a brief discussion of the lesson. This aims to help you discover and understand new concepts and skills. What’s More This comprises activities for independent practice to solidify your understanding and skills of the topic. You may check the answers to the exercises using the Answer Key at the end of the module. What I Have Learned This includes questions or blank sentence/paragraph to be filled in to process what you learned from the lesson. What I Can Do This section provides an activity which will help you transfer your new knowledge or skill into real life situations or concerns. Assessment This is a task which aims to evaluate your level of mastery in achieving the learning competency. Additional Activities In this portion, another activity will be given to you to enrich your knowledge or skill of the lesson learned. This also tends retention of learned concepts. Answer Key This contains answers to all activities in the module. At the end of this module you will also find: References This is a list of all sources used in developing this module. The following are some reminders in using this module: 1. Use the module with care. Do not put unnecessary mark/s on any part of the module. Use a separate sheet of paper in answering the exercises. 2. Don’t forget to answer What I Know before moving on to the other activities included in the module. 3. Read the instruction carefully before doing each task. 4. Observe honesty and integrity in doing the tasks and checking your answers. 5. Finish the task at hand before proceeding to the next. 6. Return this module to your teacher/facilitator once you are through with it. If you encounter any difficulty in answering the tasks in this module, do not hesitate to consult your teacher or facilitator. Always bear in mind that you are not alone. We hope that through this material, you will experience meaningful learning and gain deep understanding of the relevant competencies. You can do it! What I Need to Know In this module, you are going to study the unique characteristics of the Earth and its mechanism as a system to support life (S11/12ES-Ia-e-3), including the characteristics of its neighboring planets in the solar system. The module is divided into two lessons, namely: Lesson 1 – Origin of the Solar System Lesson 2 – Earth: The Only Habitable Planet After going through this module, you are expected to: 1. 2. 3. 4. How the Solar system came to existence. Name the planets of the Solar system. Name the Characteristics of the Earth that made it possible to support life. Recognize the uniqueness of Earth, being the only planet in the solar system with properties necessary to support life. 5. Explain why Earth is the only livable planet in the Solar System. What I Know Choose the letter of the best answer. Write the chosen letter on a separate sheet of paper. 1) What is the theory/hypothesis that suggests that a cloud of gas and dust, about 10 million km in diameter rotated slowly? a) Encounter hypothesis c) Nebular hypothesis b) Solar Nebula Hypothesis d) Protoplanet Hypothesis 2) In the origin of the solar system, what theory proposed that the solar system formed from a slowly rotating nebula that collapsed and flattened? a) Encounter hypothesis c) Nebular hypothesis b) Solar Nebula Hypothesis d) Protoplanet Hypothesis 3) What was the theory/hypothesis about the origin of the solar system proposed by scientists Immanuel Kant and Pierre Simon Laplace? a) Encounter hypothesis c) Nebular hypothesis b) Solar Nebula Hypothesis d) Protoplanet Hypothesis 4) What is the theory/hypothesis portrayed by the image below? a) Encounter hypothesis b) Solar Nebula Hypothesis c) Nebular hypothesis d) Protoplanet Hypothesis 5) Which among the planets is settled in a region of the solar system called “Goldilocks zone”? a) Mercury b) Venus c) Earth d) Mars 6) Which is TRUE for a planet to become habitable? a) It must be far from the sun so it can only receive less amount of sunlight. b) It must be in a position where it can maintain its liquid component remain as liquid. c) The planet must be closer to sun so it will receive much sunlight. d) It must have a thick atmosphere to limit the amount of solar energy it receives. 7) A group of planets in the solar system called “Jovian planets” are also called gas giants since it is composed mainly of gaseous substances. Which among the choices is NOT a Jovian planet? a) Mars b) Jupiter c) Saturn d) Uranus 8) What made Mercury not a livable planet? a) It is too close from the sun c) Its slow rotation b) It has a thin atmosphere d) All of the choices 9) Which among the choices is NOT TRUE about why Earth is the only habitable planet in the solar system? a) It has the right temperature to keep its water remain liquid. b) It is located in the Goldilocks zone c) It is one of the Jovian planets d) It has the presence of the element Carbon 10) Which element is believed by scientists to be necessary to nurture life? a) Carbon b) Oxygen c) hydrogen d) Helium 11) What is another term used aside from “Goldilocks Zone”? a) Delicate Zone c) Habitable Zone b) Extinction Zone d) Safe Zone 12) In the Statement “The star should survive long enough for its planets to develop life”, the word “star” refers to what planet? a) Earth b) Mercury c) Venus d) Sun 13) What is true for a planet to be habitable? a) It must be at the center of the solar system b) It must be on a location where it receives just enough solar energy to keep its liquid component remain liquid. c) It must have a lot of satellites. d) It must be far from the sun to receive less heat. 14) Which characteristic is true when referring to Earth? a) It has abundant supply of oxygen to support all living organisms. b) It has no atmosphere to trap the energy from the sun causing it to be covered with ice. c) It has the right temperature to keep its water remain in liquid form. d) It has very little volcanic activity that resulted to its thin atmosphere and cold surface temperature. 15) Which pair of scientists conducted an experiment that led to the discovery that life on Earth started in the oceans? a) Kant and Laplace c) Penzias and Wilson b) Miller and Urey d) Hoyle and Bondi Lesson 1 Origin of the Solar System From the big bang that is believed to be the origin of the universe, it did not form the stars and galaxies right away. Instead, it took about 300 to 500 million years after the big bang. What’s In The Solar system that we know today only formed 8.5 to 9 billion years after the big bang. Still, the big question is-- how did the Solar System actually formed? There are theories or hypotheses that would help us understand how the solar system came to existence, and the next part of this module will help us unfold the mysteries of it. Notes to the Teacher This lesson is all about the theories behind the existence of the Solar system. The following suggested activities needs to be supervised and monitored for the successful attainment of the lesson objectives. You may modify the mechanics of the activities based on your convenience. What’s New Activity 1.1. Stories of the Solar System’s Origin Objectives: 1. Name the different theories behind the origin of the Solar system. 2. Describe each theory that explains how the solar system existed. Materials: Worksheets (Concept map) Earth Science book (or any related references) Internet Downloaded images Procedure: 1. Listen carefully to the instructions given by your teacher. 2. Accomplish the worksheet by filling your answers in the boxes of the concept map. 3. You can use an Earth science book or any related references you brought with you. Using of internet is highly encouraged. 4. Do this activity in a limited time given by your teacher. Answer the guide questions. 5. Present your output to your teacher when done doing the task. (Sample of the worksheet is on the next page.) Activity sheet Name:___________________________________________ Date: _____________________ Grade and Section: _____________________________ Direction: Fill in the figures with the required answers. Concept map Concept/principle (Hypothesis) Concept/principle (Hypothesis) Solar System (Hypothesis) Concept/principle (Hypothesis) Concept/principle What is It Theories Behind the Origin of the Solar System Encounter Hypothesis The encounter hypothesis is anchored to the concept that the Sun had come across with a rogue star. The hot gas was removed from both bodies upon the encounter due to their gravitational interaction. This hot gas then accumulated and eventually formed the planets. The materials from the sun were believed to form the inner planets, and the materials from the less dense rogue star were said to be the origin of the outer planets. ounter+hypothesis hesis Figure 1.4 shows the schematic diagram of the encounter theory. The yellow circle represents the sun, while the red, smaller circle represents the less dense rogue star. (a) The sun encounters a rogue star, and (b) due to their gravitational interaction, hot gases were removed from both of them. (c) Materials from the rogue star formed the outer solar system planets, and on the other hand, materials from the sun formed inner planets of the solar system. Protoplanet Hypothesis The Protoplanet hypothesis states that a cloud of gas and dust that is estimated to about 10 million kilometers in diameter, rotated slowly. Then, the cloud of gas and dust began to collapse, either due to the explosion of a passing star or to its own gravity. There was an increased in the rate of rotation as the result of the reduced size of the clouds from the collapsing process. Then, the sun was formed from the hydrogen fusion due to the hot interior of the cloud brought by the compression. Around the sun is a plate-like disk containing a huge whirlpool called as eddies where matter accumulated because of friction force. These eddies shrank into compact masses and formed the protoplanets that later became the planets and the moons. Figure 1.5. Schematic Diagram of the Protoplanet Hypothesis https://www.google.com.ph/imgres?imgurl=https%3A%2F%2Fi.ytimg.com Figure 1.2. Schematic Diagram of the Protoplanet Hypothesis Nebular Hypothesis The most favored model for the formation of the solar system that was first proposed by Pierre Simon Laplace along with Immanuel Kant is known as the Nebula hypothesis. According to this, the solar system is formed from a slowly rotating cloud of gas or nebula that collapsed and flattened. The central, hot region became the Sun, while the surrounding materials became the planets and other heavenly bodies including the moon. cambridge.org Figure 1.3 (a) Immanuel Kant (b) Pierre-Simon Laplace https://www.google.com.ph/search?q=nebular+hypothesishypothesis Figure 1.4. Diagram of Nebular Hypothesis Solar Nebula Theory A more sophisticated version of nebular hypothesis was developed where in an interstellar dust is included. This is due to the discovery that according to calculations, solar nebula would neither form the rings nor the planets, hence, the birth of Solar nebula theory. This theory combined the idea of a flattening solar nebula with that of a condensing interstellar dust as the nebula cooled, which served as a condensation nuclei where matter are accumulated. What’s More Activity 1.2 It’s All About that Hypotheses/Theories This activity will measure what you have learned so far. Answer each item using the information taken from this module and with the use of relevant resources available in your home. Direction: Give what is/are asked in every item: 1) Name the bodies involved in the Encounter Hypothesis. a) b) 2) Who are the scientists behind Nebular Hypothesis? a) b) 3) Enumerate the four (4) terrestrial planets. a) b) c) d) 4) Differentiate Nebular Hypothesis and Solar Nebula Theory ___________________________________________________________________________ _______________________________________________________________ What I Have Learned To process what your learned from this lesson, try answering the following questions in a piece of paper. 1. Name the theories/hypotheses that explain the origin of the Solar system. a. b. c. d. 2. Describe each theory you answered in item #1. ______________________________________________________________ ______________________________________________________________ ______________________________________________________________ 3. Why do you think it is called as “Solar system”? ___________________________________________________________ ___________________________________________________________ ___________________________________________________________ What I Can Do To apply what you learned, do one of the following suggested activities: 1) Short video tutorial about the origin of the Solar system; 2) Make a brochure highlighting the different theories of how the Solar system came to existence; 3) Design a poster showing the representations of the different theories behind the origin of the Solar system; 4) Write a poem/story/essay/ or a song emphasizing the theories behind the origin of the Solar system; or 5) Interview one person (online or face to face) for each of the following. Ask them about what they know and they don’t know about how the Solar system existed. Document your interview: a) Teacher b) Classmate c) Parent/Guardian d) Government official Lesson 2 Earth: The Only Habitable Planet Knowing how the universe and solar system came to existence gave us idea on what’s beyond our planet. Our learned concepts also lead us to the fact that planets including the Earth are orbiting the sun, hence, called the “solar system”. What’s In Among the eight planets that are revolving around the sun in our Solar System, Earth is the only one that can support life. How the Earth can able to sustain life while other planets cannot? The next activities will help us answer this question. . Notes to the Teacher To establish continuity of the lesson, recall first the concepts that learners acquired in the existence of the solar system since this lesson will emphasize that not all planets in the solar system are suitable to develop life. Facilitate and guide the conduct of each activity to attain your goals in this lesson. Provide rubrics for each activity aligned to your objectives that are best fit to the situation. What’s New Activity 2.1. Earth: which is TRUE, which is FALSE? Objectives: 1) Describe the characteristics of Earth that is different from other planets in the solar system. 2) Determine the truth behind why the Earth is the only planet in the solar system that can support life. 3) Appreciate the characteristics of the Earth that made it possible to support life compared to other planets. Materials: Worksheets Earth Science book (or any related references) Internet (If available) Procedure: 1. Pay attention to the instructions given by your teacher. 2. Accomplish the worksheet by filling your answers on the line provided before each number. 3. You can use an Earth science book or any related references you brought with you. Using of internet is highly encouraged. 4. Accomplish the guide questions that follow. 5. Do this activity in a limited time given by your teacher. (Sample worksheet is on the next page) Activity sheet Name:_______________________________ Grade and Section:_____________________ Date: ___________________________ Direction: Using any references available IN YOUR HOME, answer TRUE if you think the statement is correct; if the statement is false, provide the correct answer. Write your answers clearly in the space provided before each number: ____________________________1) The Sun needs to survive long enough for the surrounding planet to survive and develop life. ____________________________2) The “Goldilocks zone” is the region in the solar system where the temperature received by the planets form the sun is too hot, disabling life to develop. ____________________________3) The Earth has the right temperature to keep water in liquid form. This characteristic of Earth made it possible to nurture life. ___________________________ 4) Unlike other planets, the Earth is in the “Goldilocks zone” in the solar system that made it possible to maintain conditions necessary to develop and support life. ___________________________ 5) Presence of excessive active volcanoes doesn’t necessarily affect the possibility of life to exist. ___________________________ 6) Among the planets in the solar system, Earth’s distance from the sun is just enough for it to maintain the temperature neither too hot nor too cold. ___________________________ 7) Scientists believed that the element Oxygen is the bass of life. It is the reason why life on earth was able to exist. ___________________________ 8) Earth belongs to A of planets in the solar system called “Jovian planets”. These planets are known as gas giants. ___________________________ 9) Scientists Stanley Miller and Harold Urey conducted an experiment and simulated the conditions of the early Earth. They found out that the life on Earth was first to exist in the oceans. __________________________ 10) Mercury and Venus were observed to absorb less amount of energy from the sun making these planets too cold for life to exist and develop. What is It The Livable Planet For a planet to be suitable for “life” to exist, it must have the two important requirements: A star to which the planet depends on the energy it needs to nurture life must survive and live long; and, the planet should be in a position where it can keep its water remain as liquid. In the solar system, planets receives energy from a mediummass star known as the Sun. Compared to massive planets, sun can live longer, making it possible to sustain its distribution of energy to its surrounding planets, hence, the Earth. Furthermore, for a planet to be livable, it must be located on its “Goldilocks Zone”. Earth is found to be located in such region where due to its distance from the sun, the amount of heat and solar energy it receives is just enough to keep it Earth neither too hot nor too cold. Being relatively closer to the sun such as Mercury and Venus, the energy they receive is too much making their surfaces to have an increased temperature. On the other hand, distance of the planets Mars, Jupiter, Saturn, Uranus and Neptune are too far that the energy they receive is very little that made surfaces very cold. Other features of planets such as rotation can also be a reason why it can’t support life. Mercury for example, has extreme temperature due to its slow rotation. Its thin atmosphere can also contribute to the extreme https://www.google.com.ph/search?q=solar+system temperature since it is Figure 2.1. The solar system not capable of capturing and maintaining the right amount of heat for a life to exist. In the case of Venus, the presence of numerous active volcanoes produces thick atmosphere that also contributed to its hot surface temperature. The group of stars known as the “Jovian planets” also called as gas giants, are mainly composed of gases, thus, there is no land where organisms can live and develop making it impossible for life to exist. This group includes Jupiter, Saturn, Uranus and Neptune Scientists Stanley Miller and Harold Urey conducted an experiment in 1952 and tried to unfold the mystery of how life started on earth. They found that life started in the oceans. In their experiment the early Earth was no presence of Oxygen gas, it only existed when cyanobacteria emerged. These organisms are able to produce oxygen gas through photosynthesis process. The Miller-Urey experiment https://www.google.com.ph/search?q=mill made use of hydrogen, methane, er+urey+experiment ammonia, and water vapor as Figure 2.2. Miller-Urey Experiment components of the early atmosphere. These gases were exposed to electrical sparks for one week. When the week ended, some reddish-brown substances were found in the container. What’s More Activity 2.2. The Earth and its Neighbors This activity will stimulate your learning about the Earth’s unique characteristics and properties, as well as the knowledge you acquired about its neighboring planets. Use the information found in this module and or any other relevant references available in your home. Direction: Give what is/are asked in every item: 1) Name 3 characteristics of the Earth making it the only livable planet in the solar system. a) b) c) 2) What made Mercury and Venus not fit to nurture life? Mercury- ___________________________________________________ Venus- _____________________________________________________ 3) Enumerate the four (4) Gas Giants. a) b) c) d) 4) What is the so called “Goldilocks zone”? ___________________________________________________________________________ _______________________________________________________________ 5) What is the role of the sun in making a planet suitable for life to develop? ___________________________________________________________________________ ___________________________________________________________________________ What I Have Learned To process what you learned in this lesson, try answering this questions in a piece of paper. 1) Why do you think life do not exist in planets such as Saturn, Uranus and Neptune? _________________________________________________________________ __________________________________________________________ 2) How the amount of heat received by the Earth from the Sun able it to support life? _________________________________________________________________ __________________________________________________________ 3) Is the location of the Earth from the Sun can be a reason that it can nurture life? Why? _________________________________________________________________ __________________________________________________________ 4) List at least three (3) characteristics of the Earth and discuss each of their importance in the existence of life. a) ______________________________________________________________ _____________________________________________________________ b) ______________________________________________________________ _____________________________________________________________ c) ______________________________________________________________ _____________________________________________________________ What I Can Do To apply what you learned, do one of the following suggested activities: 1) Design a three-dimensional figure of the Solar system emphasizing the position of each planet towards the sun. 2) Write a poem/story/essay/ or a song highlighting the unique characteristics and properties of the Earth compared to other planets in the solar system. 3) Do an interview on what a random individual knew about why Earth is the only planet in the solar system that can nurture life. Find representatives for each: a) b) c) d) Teacher Classmate Parent/Guardian Government official Assessment Post test Direction: Choose the letter of your answer. 1) What is the theory/hypothesis that suggests that a cloud of gas and dust, about 10 million km in diameter rotated slowly? a) Encounter hypothesis c) Protoplanet Hypothesis b) Solar Nebula Hypothesis d) Nebular hypothesis 2) In the Statement “The star should survive long enough for its planets to develop life”, the word “star” refers to what planet? a) Sun b) Mercury c) Venus d) Earth 3) In the origin of the solar system, what theory proposed that the solar system formed from a slowly rotating nebula that collapsed and flattened? a) Nebular hypothesis c) Encounter Hypothesis b) Solar Nebula Hypothesis d) Protoplanet Hypothesis 4) Which element is believed by scientists to be necessary to nurture life? a) Carbon b) Oxygen c) hydrogen d) Helium 5) What was the theory/hypothesis about the origin of the solar system proposed by scientists Immanuel Kant and Pierre Simon Laplace? a) Encounter hypothesis c) Nebular hypothesis b) Solar Nebula Hypothesis d) Protoplanet Hypothesis 6) Which characteristic is true when referring to Earth? a) It has abundant supply of oxygen to support all living organisms. b) It has no atmosphere to trap the energy from the sun causing it to be covered with ice. c) It has the right temperature to keep its water remain in liquid form. d) It has very little volcanic activity that resulted to its thin atmosphere and cold surface temperature. 7) What is the theory/hypothesis is shown by the picture? a) Protoplanet Hypothesis b) Solar Nebula Hypothesis c) Nebular hypothesis d) Encounter Hypothesis 8) Which among the planets is settled in a region of the solar system called “Goldilocks zone”? a) Mercury b) Venus c) Earth d) Mars 9) . Which among the choices is not a Jovian planet? a) Earth b) Jupiter c) Saturn d) Uranus 10) What made Mercury not a livable planet? a) It is too close from the sun c) Its slow rotation b) It has a thin atmosphere d) All of the choices 11) Which is TRUE for a livable planet? a) It must be far from the sun so it can only receive less amount of sunlight. b) It must have a thick atmosphere to limit the amount of solar energy it receives. c) It must be in a position where it can maintain its water component remain as liquid. d) The planet must be closer to sun so it will receive much sunlight. 12) Which among the choices do not explain the Earth as the only habitable planet? a) It has the right temperature to keep its water remain liquid. b) It is located in the Goldilocks zone c) It has the presence of the element Carbon d) It is one of the Jovian planets 13) What is true for a planet to be habitable? a) It must be at the center of the solar system b) It must be on a location where it receive just enough solar energy to keep its liquid component remain liquid. c) It must have a lot of satellites. d) It must be far from the sun to receive less heat. 14) From the experiment conducted by Miller and Urey, life is believed to start in the _____________. a) Oceans c) Ashes b) Volcanoes d) Mountains 15) What makes Carbon a unique element that is considered as the basis of life? a) Its Symbol c) Its six electrons b) Its four valence electrons d) Its six protons Additional Activities To wrap up everything that you learned from this module, select one lesson you like the most and do either one of the following tasks; 1) 2) 3) 4) 5) Spoken poetry; Write a jingle/song; Make a short appreciation video; Make a reaction video (Vlogg); or Craft a three-dimensional instructional material of the Earth and the Solar system. Pre-assessment 1. D 2. C 3. C 4. A 5. C 6. B 7. A 8. D 9. C 10. A 11.C 12.D 13.B 14.C 15.B Post test 1. C 2. A 3. A 4. A 5. C 6. C 7. D 8. C 9. A 10.D 11.C 12.D 13.B 14.A 15.B Answer Key EARTH AND LIFE M1 References Books Science in Today’s World for Senior High School: Earth and Life Science. Sia, S.R.D. and Cortez, L.A.S. 2016 Internet https://www.google.com.ph/search?q=encounter+hypothesis&tbm=isch&ved=2ahUKEwi https://www.google.com.ph/search?q=steady+state+theory&hl=en&authuser=0&tbm=isc https://www.google.com.ph/imgres?imgurl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FdW4I https://www.google.com.ph/imgres?imgurl=https%3A%2F%2Fi.ytimg.com%2Fvi%2FdW4I https://www.google.com.ph/search?q=nebular+hypothesishypothesis&tbm=isch&ved= https://www.nationalgeographic.org/encyclopedia/hydrosphere/ http://earth.rice.edu/mtpe/geo/geosphere.html https://www.google.com.ph/imgres?imgurl=https%3A%2F%2Fprd-wret.s3.us-west https://scied.ucar.edu/atmosphere https://www.esrl.noaa.gov/gmd/education/info_activities/pdfs/TBI_earth_spheres.pdf DISCLAIMER This self-learning Module (SLM) was developed by Deped SOCCSKSARGEN with the primary objective of preparing for and addressing the new normal. Contents of this module were based on DepEd’s most essential Learning Competencies (MELC). This is supplementary material to be used by all learners of Region XII in all public schools beginning SY 2020-2021. The process of LR development was observed in the production of this module, This is version 1.0 We highly encourage feedback, comments, and recommendations. For inquiries or feedback, please write or call: Department of Education - Bureau of Learning Resources (DepEd-BLR) Ground Floor, Bonifacio Bldg., DepEd Complex Meralco Avenue, Pasig City, Philippines 1600 Telefax: (632) 8634-1072; 8634-1054; 8631-4985 Email Address: blr.lrqad@deped.gov.ph * blr.lrpd@deped.gov.ph