1) Which fossil fuel is primarily formed from the remains of algae buried under mud? a) Coal b) Natural Gas c) Oil d) Peat 2) If Earth receives energy from the sun and returns some of its energy to space, whattype of system does Earth have? a) Open system b) Closed System c) Isolated System d) None of the above 3) What is the first step in processing minerals? a) Analysis b) Comminution c) Sampling d) Concentration 4) Which of the following waste types can be classified as both toxic and reactive? a) a. Plastic waste such as bags and containers b) b. Lithium-sulfur batteries and old pesticides c) c. Cardboard and paper used for packaging d) d. Organic waste like food scraps and manure 5) Which of the following is NOT a type of fossil fuel? a) Coal b) Natural gas c) Oil d) Uranium 6) You are part of a reforestation project in an area where strong winds frequentlyerode the soil. What strategy would help you prevent this wind erosion? a) a. Watering the soil frequently b) b. Tree planting to act as a wind barrier c) c. Building dry stone walls d) d. Applying chemical herbicides 7) What does the '3Rs' method of waste management stand for? a) a. Refine, Reduce, Reproduce b) b. Recycle, Reuse, Reduce c) c. Refill, Remove, Reuse d) d. Recycle, Reduce, Rebuild 8) Which human activity can contribute to increased sedimentation in water bodies? a) Planting trees b) Farming c) Conservation effort d) Water purification 9) Calcite mineral reacts to acid and produces gases, which means? a) a. It has sugar in it b) b. It is a carbonate mineral c) c. It is not a real Calcite d) d. All of the above 10) Which of the following is not considered a type of solid waste? a) a. Plastics, paper, and metals from industrial operations b) b. Sludge from wastewater treatment plants c) c. Household food waste like vegetable scraps d) d. Rainwater from roofs during a storm 11) Which of the following examples does not fit into the category of organic waste? a) a. Rotten meat and food scraps from the kitchen b) b. Garden leaves and manure c) c. Broken glass and old newspapers d) d. Compostable food waste 12) Earthquakes in the ocean may cause a tsunami. What are the two subsystems thatinteracted in the given situation? a) a. Geosphere & Biosphere b) b. Biosphere & Hydrosphere c) c. Geosphere & Hydrosphere d) d. Atmosphere & Hydrosphere 13) The Earth is surrounded by a blanket of air, which we call the _______ a) Geosphere b) Biosphere c) Hydrosphere d) Atmosphere 14) Which of the following waste types is classified as both hazardous and radioactive? a) a. Batteries, paints, and cleaning agents b) b. Mixed waste such as radioactive heavy metals and organic liquids c) c. Sludge from air pollution control facilities d) d. Biodegradable waste from kitchens and gardens 15) Gaseous waste is best represented by which of the following? a) a. Oil spills in the ocean b) b. Carbon emissions from industrial chimneys c) c. Paper waste from offices d) d. Sludge from wastewater treatment plants 16) What is the primary method of solid waste management in the Philippines as per the Ecological Solid Waste Management Act (Republic Act 9003)? a) a. Incineration b) b. Landfilling and the 3Rs (Reduce, Reuse, Recycle) c) c. Composting d) d. Burying waste in open areas

EARTH SCIENCE

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