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SCIENCE 6 REVIEWER (2 ND TRIMESTER)

SCIENCE 6 REVIEWER (2 ND TRIMESTER). I. IDENTIFICATION. 1. It is a group of organisms of the same kind living in same place at the same time. 2. It is considered as the largest ecosystem. 3. The interaction between biotic and abiotic factors.

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SCIENCE 6 REVIEWER (2 ND TRIMESTER)

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  1. SCIENCE 6 REVIEWER(2ND TRIMESTER)

  2. I. IDENTIFICATION 1. It is a group of organisms of the same kind living in same place at the same time. 2. It is considered as the largest ecosystem.

  3. 3. The interaction between biotic and abiotic factors. 4. The organism in the food chain that receives the most energy from the sun.

  4. 5. It is most productive aquatic biome. 6. It is a gas that is one of the essential components of protein.

  5. 7. It is a kind of bacteria that converts most of N2 into NO3 . 8. It is an element present in all living things.

  6. 9. It is the kind of earthquake that is the result of crustal movement. 10. It is the strength of the earthquake.

  7. 11. It is a kind of rock found near the Mayon volcano. 12. It is the layer of the earth where we live.

  8. 13. It is the condition of the atmosphere over a place for a long period of time. 14. It is the rays of the sun that give more heat/radiation.

  9. 15. It is the condition of the atmosphere over a place for a short periodof time.

  10. ANSWERS: 1.Population 8. Carbon 2. Earth 9. Tectonic Earthquake 3. Ecosystem 10.Intensity 4. Producers 11. Igneous Rock 5. Estuary 12. Crust 6. Nitrogen 13. Climate 7. Nitrogen Fixing 14. Direct Rays Bacteria 15. Weather

  11. A. FOOD WEB II. Analysis 1. Which organism receives the least amount of energy? 2. What are the producers in the food web? 3. How many 1st order consumers are there in the food web? 4. How many 2nd order consumers are there in the food web? 5. If the hawk eats the snake who ate the frog, to what order of consumer does the hawk belong?

  12. B. Nitrogen Cycle 6. What nitrogen compound is needed by plants to produce protein? 7. What kind of gas is released through the process of ammonification? 8. What bacteria converts free nitrogen into nitrate? 9. What process converts free nitrogen into nitrogen compound? 10. What kind of bacteria released nitrogen gas in the air from nitrates?

  13. ANSWERS: A. 1. Hawks 2. Grass and Beans 3. 2 4. 5 5. 4th order B. 1. Nitrate (NO3) 2. Ammonium 3. Nitrogen fixing Bacteria 4. Nitrogen Fixation 5. Denitrifying bacteria

  14. III. Analogy 1. pack of dogs: _____; Colony of ants: Cooperation 2. ________: hottest biome; tundra: coldest biome 3. Burning fuel : ______; Plants : O2

  15. 4. Transpiration : ___; Snow :precipitation 5. NO3 : ______; NO2 : Nitrite 6. ________: 21 % ; Nitrogen: 78%

  16. 7. Wheat: ______; Fungi: decomposer 8. Malnourishment :____; Squatters : Space shortage 9. Ponds:____________; River : running water

  17. 10. Hanging Amihan: _____; Hanging Habagat: Southwest monsoon 11. Orchids and Trees: commensalisms; Eagle and Snake:_____ 12. . Flowers and bees: ____; Ticks on dogs: parasitism

  18. 13. Grazing animals: grassland; bears and wolves: _____ 14. cacti: desert ; pines: ___ 15. sharks and dolphins: salty water; tilapia : ___

  19. ANSWERS: 1. Competition 8. Food Shortage 2. Desert 9. Standing water 3. CO2 10. Northeast Monsoon 4. Vapor 11. Predation 5. Nitrate 12. Mutualism 6. Oxygen 13. Taiga 7. Producer 14. Coniferous forest orTaiga 15. Fresh water

  20. IV. Odd – Man Out 1. A. air B. water C. narra D. soil 2. A. nitrification B. ammonification C. condensation D. nitrogen fixation

  21. 3. A. birth B. death C. migration D. climate change 4. A. active B. dormant C. composite D. Extinct 5. A. altitudeB. wind system C. temperature D. latitude

  22. ANSWERS: 1. C, abiotic factors 2. C, processes in nitrogen cycle 3. D, Population Change 4. C, volcanoes according to activity 5. C, factors affecting climate

  23. V. Classification A. Weathering A – Chemical B - Mechanical 1. Oxidation 6. animals 2. Carbonation 7. wind 3. Hydration 8. force of moving water 4. changes in 9. plants temperature 5. dissolution10. gravity

  24. V. Classification B. Kinds of Rocks A Igneous B Metamorphic C Sedimentary 1. Marble 6. granite 2. Limestone 7. sandstone 3. Pumice8. gneiss 4. Slate9. basalt 5. Shale10. conglomerate

  25. ANSWERS: A. 1. A B. 1. B 2. A 2. C 3. A 3. A 4. B 4. B 5. A 5. C 6. B 6. A 7. B 7. C 8. B 8. B 9. B 9. A 10.B 10. C

  26. VI .Experimentation The students in grade 6 conducted an investigation on the sugar content of their favorite food. In the experiment used 1 bottle of Benedict's solution, assorted small pieces of food such as cookies, crackers, bread, fruit, several glass test tubes, 1 alcohol lamp and tongs. They placed a piece of food in each test tube and then poured 30 - 40 ml of Benedict's solution over the food. They heated the test tubes one at a time over the burner, using the tongs to hold the test tubes. According to their research: Benedict's solution is blue. The presence of sugar will turn the solution to orange

  27. I. Identify the Problem1 point) II. Formulate the Hypothesis(2 points)  III. Identify the Variables(3 points) • MV/IV: • CV: • RV/DV:  IV. Write the Procedures (3point) V. Data (Draw the set-Ups, label the variables used and write your observations)(3 points) VI. Conclusion(2 points)  VII. Application(1 point)

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