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🙏ውድ ተማሪዎች ነገ Biology Unit 1 ጥያቄ ይለቀቃል ከወዲው እንድትዘጋጁ እናሳስባለን join 👉@ESS_Exam_Center 👉https://t.me/+5P5iOyRzfEFkMzA0

ESS Exam Center Grade 12 Geography Unit 1 part 1 Answer ### Multiple Choice Answers 1. b) Alfred Wegener 2. c) Pangaea 3. b) Triassic 4. b) Laurasia and Gondwanaland 5. b) Mesosaurus 6. b) Wegener's lack of geological training 7. c) Africa and South America 8. d) Rock type and structural similarities 9. c) Wegener lacked a plausible mechanism for continental movement 10. c) They were all grouped around the South Pole ### Matching Answers 1. c) Supercontinent that existed 255-210 Ma 2. b) Northern part of Pangaea 3. c) Southern part of Pangaea 4. d) Fossil evidence supporting the theory 5. e) Period when Pangaea began to break apart 6. f) Coastlines of Africa and South America fit together 7. g) Similar rocks and mountain belts across continents 8. h) Similarity in climatic data from rock structures 9. i) Scientist who proposed the theory of continental drift 10. j) Lack of mechanism for continental movement ### Fill in the Blank Answers 1. The theory of continental drift was proposed by Alfred Wegener. 2. The supercontinent that existed about 255-210 million years ago is called Pangaea. 3. The northern part of Pangaea was named Laurasia. 4. The southern part of Pangaea was known as Gondwanaland. 5. Fossils of Mesosaurus were found on both sides of the Atlantic Ocean. 6. Coastline similarity is evidence where the coastlines of Africa and South America fit together like a jigsaw puzzle. 7. Rock type and structural similarities include similar rock types and mountain belts extending from one continent to another. 8. The process by which Pangaea began to break apart is known as continental drift. 9. Wegener’s theory was initially rejected due to the lack of a mechanism for how continents could move. 10. The Triassic period is when Pangaea started to break apart. ### Short Answer Questions 1. What was the name of the supercontinent proposed by Wegener? - Pangaea 2. During which geological period did Pangaea start to break apart? - Triassic 3. Name one type of evidence Wegener used to support his theory of continental drift. - Fossil Evidence, Coastline Similarity, Rock type and structural similarities, or Paleoclimatic Evidence 4. Why was Wegener’s continental drift theory initially not accepted by the scientific community? - Lack of a plausible mechanism for continental movement, Wegener’s lack of geological training, and difficulty in believing such rapid continental drift 5. What were the two main parts of Pangaea after it began to break apart? - Laurasia and Gondwanaland 6. How did Wegener explain the similarity of coastlines of different continents? - He suggested that the continents were once joined together and fit together like pieces of a jigsaw puzzle. 7. Which fossil was found on both sides of the Atlantic Ocean and supported Wegener’s theory? - Mesosaurus 8. What is the significance of the Triassic period in the context of continental drift? - It is the period when Pangaea began to break apart. 9. What geological feature was used as evidence for continental drift involving similarities in rock structures? - Mountain belts and rock types 10. How did Wegener’s theory contribute to the scientific understanding of Earth's history? - It introduced the concept of the lateral mobility of continents and inspired further research into plate tectonics and continental movement. join 👉@ESS_Exam_Center 👉https://t.me/+5P5iOyRzfEFkMzA0

- Gondwanaland was the southern supercontinent that formed from the breakup of Pangaea, consisting of present-day continents like Africa, South America, Antarctica, Australia, and the Indian sub-continent. 10. Why is it important to study the formation and evolution of the Earth's continents? - Studying the formation and evolution of the Earth's continents helps us understand the geological history, the processes that shaped the planet, the distribution of natural resources, the history of life on Earth, and provides insights into current and future geological activity. join 👉@ESS_Exam_Center 👉https://t.me/+5P5iOyRzfEFkMzA0

ESS Exam Center Grade 11 Geography Unit 1 part 1 Answer ### Multiple Choice Answers 1. a) Big Bang 2. c) 10-20 billion years ago 3. b) Material collision, cooling, and gravitational attraction 4. d) 4.5 billion years 5. c) Rodinia 6. c) Triassic 7. b) Continental drift 8. b) Gondwanaland and Laurasia 9. d) India 10. d) Quaternary ### Matching Answers 1. Big Bang - a. Theory explaining the origin of the Universe 2. Solar System - b. Sun and planets 3. Pangaea - c. Supercontinent that existed 255-210 Ma 4. Continental drift - d. Movement of continents over Earth's surface 5. Rodinia - e. Early supercontinent around 1 billion years ago 6. Gondwana - f. Southern supercontinent formed from Pangaea 7. Laurasia - g. Northern supercontinent formed from Pangaea 8. Himalayas - h. Mountain range formed by the collision of India and Eurasia 9. Mariana Trench - i. Deepest oceanic trench 10. Plate tectonics - j. Process involving the movement of Earth's plates #### Fill in the Blank (10 items) 1. The theory that explains the origin of the Universe is called the Big Bang. 2. The Earth is approximately 4.5 billion years old. 3. The first supercontinent that formed after the solidification of cosmic rocks was called Rodinia. 4. The supercontinent Pangaea started to break apart during the Triassic period. 5. Continental drift refers to the movement of continents over the Earth's surface. 6. Gondwanaland and Laurasia were the two landmasses that resulted from the division of Pangaea. 7. The Indian sub-continent moved northwards and collided with Eurasia to form the Himalayas. 8. The Earth's continents attained their present positions during the Quaternary period. 9. Sea-floor spreading is a process that helps explain the movement of continents. 10. The Solar System consists of the Sun and the planets orbiting around it. #### Short Answer (10 items) 1. What is the Big Bang theory? - The Big Bang theory is the most widely supported scientific explanation for the origin of the Universe, suggesting it began 10-20 billion years ago from an abrupt cosmic explosion that initiated the expansion of a small volume of matter at high density and temperature. 2. How was the Earth formed according to scientific literature? - The Earth was formed about 4.5 billion years ago from the mixture of gas and dust particles moving in space around the Sun, following the cooling and gravitational attraction of material after the Big Bang. 3. What was the supercontinent Rodinia, and when did it exist? - Rodinia was an early supercontinent that existed around 1 billion years ago, formed by the gathering of initial land masses after the solidification of cosmic rocks. 4. Describe the process of continental drift. - Continental drift is the process by which continents move over the Earth's surface due to the movement of tectonic plates. This movement causes the continents to drift apart or collide over geological time scales. 5. How did the Himalayas form? - The Himalayas formed from the collision of the Indian sub-continent with the Eurasian plate around 40-50 million years ago, resulting from the northward movement of the Indian plate. 6. What happened to Pangaea around 210-180 Ma? - Around 210-180 million years ago, during the Triassic period, the supercontinent Pangaea started to break apart, leading to the formation of separate continents and the creation of oceans along the continental cracks. 7. What is sea-floor spreading? - Sea-floor spreading is a process where new oceanic crust is formed at mid-oceanic ridges and slowly moves away from the ridge, causing the ocean floor to spread and contribute to the movement of tectonic plates. 8. Explain the significance of the Quaternary period in terms of continental positions. - The Quaternary period, which began around 2.6 million years ago and continues to the present, is significant because it marks the time when the Earth's continents attained their current positions after millions of years of drifting. 9. What was Gondwanaland?

- Studying major landforms is important for understanding the Earth's geological history, predicting natural disasters, managing natural resources, and planning human activities and settlements. 9. What are the main physical processes involved in the formation of mountains? - The main physical processes involved in the formation of mountains include tectonic plate collisions, volcanic activity, and the folding and faulting of the Earth's crust. 10. How do landforms influence human activities and settlements? - Landforms influence human activities and settlements by determining the availability of resources, the suitability of land for agriculture, the risk of natural disasters, and the location of transportation routes and urban development. join 👉@ESS_Exam_Center 👉https://t.me/+5P5iOyRzfEFkMzA0

ESS Exam Center Grade 10 Geography Unit 1 part 1 Answer #### Multiple Choice (10 items) 1. What are the three major types of landforms? - b) Mountains, plateaus, plains 2. What process can create mountains and hills? - b) Plate tectonic movement and volcanic activities 3. Which is the largest ocean in the world? - c) Pacific Ocean 4. Which continent is the largest by land area? - c) Asia 5. What is the narrow strip of land with water on both sides connecting two larger pieces of land called? - c) Isthmus 6. What is the highest landform on Earth? - b) Mt. Everest 7. How much of the Earth's surface is covered by oceans? - c) 71% 8. Which is the largest island in the world? - b) Greenland 9. What landform is formed when rock layers are pushed together from opposite sides? - c) Mountain 10. What is the deepest landform on Earth? - b) Mariana Trench #### Matching (10 items) 1. b) Continents 2. i) Oceans 3. a) Peninsula 4. g) Isthmus 5. f) Mountain 6. h) Plateau 7. c) Plain 8. j) Valley 9. e) Island 10. d) Gorge #### Fill in the Blank (10 items) 1. The mountains are the largest elevated landforms on the Earth's surface. 2. The Pacific Ocean is the largest and deepest ocean in the world. 3. A peninsula is a piece of land surrounded by water on three sides but connected to the mainland. 4. The Isthmus of Panama is the narrow strip of land connecting North America and South America. 5. The Himalayas were formed about 40 to 50 million years ago by the collision of the Indian and Eurasian tectonic plates. 6. Valleys are low areas between mountains. 7. The Mariana Trench is the deepest landform on Earth. 8. The Arctic Ocean is the smallest ocean. 9. Volcanic activities can create mountains by building up materials on the surface. 10. Island is a piece of land completely surrounded by water. #### Short Answer (10 items) 1. Explain how tectonic plate movement can create landforms. - Tectonic plate movement can create landforms through processes such as the collision, subduction, and spreading of plates. When plates collide, they can form mountains, while subduction can create volcanic activity, and spreading can form mid-ocean ridges. 2. Why are oceans important for creating coastal land features? - Oceans are important for creating coastal land features through the action of waves, tides, and currents, which can erode coastlines, deposit sediments, and form features such as beaches, cliffs, and deltas. 3. What makes the Himalayas unique among the world's mountain ranges? - The Himalayas are unique due to their height, with Mt. Everest being the highest peak in the world. They were formed by the collision of the Indian and Eurasian tectonic plates and continue to rise due to ongoing tectonic activity. 4. Describe the difference between a peninsula and an isthmus. - A peninsula is a piece of land surrounded by water on three sides but connected to the mainland, while an isthmus is a narrow strip of land with water on both sides connecting two larger landmasses. 5. How do volcanic activities contribute to the formation of landforms? - Volcanic activities contribute to the formation of landforms by erupting lava, ash, and other materials that build up and create mountains, islands, and plateaus. They can also form calderas and lava plains. 6. What are the characteristics of plains as a type of landform? - Plains are large, flat, or gently rolling areas of land with little elevation change. They are often fertile and used for agriculture, and can be formed by sediment deposition from rivers or by the erosion of surrounding higher lands. 7. How does erosion contribute to the creation of minor landforms? - Erosion contributes to the creation of minor landforms by wearing away rocks and soil through the action of water, wind, ice, and gravity, forming features such as valleys, gorges, and gullies. 8. Why is it important to study major landforms?

20 informal English phrases that are commonly used in conversation: 1. What's up? - What's happening? / How are you? 2. How's it going? - How are things? / How are you doing? 3. Long time no see! - It's been a while since we last saw each other. 4. No worries. - It's okay / Don't worry about it. 5. Sounds good to me. - That works for me / I agree. 6. Catch you later. - See you later. 7. I'm all ears. - I'm listening carefully. 8. That's awesome! - That's great / amazing! 9. No big deal. - It's not a problem / It's not important. 10. Hang in there. - Stay strong / Don't give up. 11. You bet! - Absolutely / Of course. 12. Chill out. - Relax / Calm down. 13. Take it easy. - Relax / Don't stress. 14. That's a bummer. - That's unfortunate / That's disappointing. 15. Give me a break. - Come on! / Seriously? 16. For sure. - Definitely / Absolutely. 17. You've got to be kidding me! - Are you serious? / I can't believe it! 18. Fingers crossed. - Hoping for good luck / Hoping for the best. 19. Can't complain. - Things are fine / I'm doing okay. 20. Hit me up. - Contact me / Let me know. Join us for more. join 👉@ESS_Exam_Center 👉https://t.me/+5P5iOyRzfEFkMzA0

6. List the two main branches of geography. - Physical geography and human geography. 7. What does physical geography study? - Physical geography studies the distribution of natural features such as climate, landforms, soil, vegetation, surface drainage systems, water resources, and animals. 8. What does human geography study? - Human geography studies the distribution and influence of human aspects such as cultures, population settlement, economic activities, and political systems. 9. Name three sub-branches of physical geography. - Geomorphology, climatology, and biogeography. 10. Name three sub-branches of human geography. - Urban geography, economic geography, and political geography. join 👉@ESS_Exam_Center 👉https://t.me/+5P5iOyRzfEFkMzA0

ESS Exam Center Grade 9 Geography Unit 1:Part 1 Answer ### Answers to the Exam Que Multiple Choice Questions (10 items) 1. Who coined the term "Geography"? - B. Eratosthenes 2. Which definition of geography emphasizes its role in connecting the general with the particular through measurement and mapping? - B. Alexander Von Humboldt 3. According to R. Hartshorne, geography is primarily concerned with: - B. Describing distributions on the surface of the earth 4. Which of the following is NOT included in the major areas that geography focuses on? - B. The study of celestial bodies other than the earth 5. Physical geography does NOT study: - C. Political systems 6. Which sub-branch of geography is concerned with the distribution of animal species? - A. Zoogeography 7. The study of the distribution and influence of human aspects such as cultures and population settlement falls under: - B. Human Geography 8. Which of the following branches studies the relationship between human beings and their natural environment? - D. Human Geography 9. The term "Anthroposphere" refers to: - C. The part of the environment made or modified by humans 10. Which of the following does NOT fall under the scope of physical geography? - C. Urban settlements #### Fill in the Blank Questions (10 items) 1. The term "Geography" combines two Greek words: "Geo," meaning earth, and "Graphos," meaning writing. 2. Eratosthenes defined geography as the study that deals with the description of the earth. 3. The scope of geography is dynamic and often changes as new discoveries and ideas enter the field. 4. The hydrosphere includes all bodies of water such as oceans, rivers, and lakes. 5. The lithosphere refers to the solid layer of rocks that covers the entire surface of the planet. 6. The biosphere encompasses all living organisms in and on the earth’s surface. 7. Physical geography studies the distribution of natural features such as climate, landforms, and soil. 8. Human geography studies the distribution and influence of human aspects like cultures, population settlement, and economic activities. 9. Climatology is a sub-branch of physical geography. 10. Human geography is concerned with the economic activities of humans and their environmental impacts. #### Matching Questions (10 items) 1. D Eratosthenes 2. I Alexander Von Humboldt 3. C Concise Oxford Dictionary 4. E R. Hartshorne 5. H Yeates, M. 6. F Hydrosphere 7. B Biosphere 8. J Atmosphere 9. G Lithosphere 10. A Anthroposphere #### Short Answer Questions (10 items) 1. Define geography as per the definition provided by Eratosthenes. - Geography is the description of the earth. 2. How does the definition of geography by Alexander Von Humboldt differ from that of Eratosthenes? - Alexander Von Humboldt defined geography as a synthesizing discipline to connect the general with the particular through measurement, mapping, and a regional emphasis, which is more specific and analytical compared to Eratosthenes' general description of the earth. 3. Explain why it is difficult to forward a universally accepted definition of geography. - It is difficult because geography is a dynamic discipline that evolves with changes in its scope and methods of study, as well as the varying concerns, interests, and focus of different scholars over time. 4. Describe the scope of geography. - The scope of geography is very wide, encompassing the study of physical and human features of the world, their causes, effects, and interactions, and including topics in the hydrosphere, atmosphere, lithosphere, biosphere, and anthroposphere, as well as economic, social, political, and ecological problems. 5. What are the major areas that geography focuses on? - The earth's position in the universe and its movements; physical features and their variations; relationships between humans and their natural environment; atmospheric conditions and weather; materials making up the earth; and major economic activities and their environmental impacts.