1) It is one of the strongest material in the universe. a) Metals b) Non metals c) Metalloid 2) It is a very big molecules linked together into long and repeating chains. a) Metals b) Polymers c) Ceramics 3) A nonmetallic materials that includes clay and glass. a) Metals b) Polymers c) Ceramics 4) It is a change in material's size, shape, and phase without changing the composition. a) Physical Change b) Chemical Change 5) It occurs when a material's composition is changed as it reacts to another substance forming completely a new substance. a) Physical Change b) Chemical Change 6) A change from solid to liquid. a) Condensation b) Freezing  c) Melting 7) A change from liquid to solid. a) Condensation b) Freezing c) Melting 8) A change from gas to liquid. a) Deposition b) Evaporation c) Condensation 9) A change from liquid to gas. a) Deposition b) Evaporation c) Condensation 10) A change from gas to solid. a) Deposition b) Evaporation c) Condensation 11) Rusting of Iron nails. a) Presence of Oxygen b) Absence of Oxygen c) Presence of Heat 12) Overripe fruits. a) Presence of Oxygen b) Absence of Oxygen c) Presence of Heat 13) Fermentation a) Presence of Oxygen b) Absence of Oxygen c) Presence of Heat 14) It is the increase of Earth's average temperature. a) Ozone Depletion b) Global Warming c) Acid Rain 15) The gasses capable of trapping the heat. a) Methane gasses b) Atmospheric gasses c) Greenhouse gasses 16) Which layer of the atmosphere where most of the ozone gases form and settle. a) Troposphere b) Stratosphere c) Mesosphere 17) It refers to the practice of proper and effective waste disposal. a) Wastes b) Waste Management c) Waste Segregation 18) Buy what is only needed. a) Reuse b) Reduce c) Recycle d) Recover e) Repair 19) Compost. a) Reuse b) Reduce c) Recycle d) Recover e) Repair 20) Donate the materials or things that you have used instead of throwing it. a) Reuse b) Reduce c) Recycle d) Recover e) Repair 21) Do a garage sale. a) Reuse b) Reduce c) Recycle d) Recover e) Repair 22) Animal manure converted to gas. a) Reuse b) Reduce c) Recycle d) Recover e) Repair 23) Fixing defective products. a) Reuse b) Reduce c) Recycle d) Recover e) Repair 24) It is an area where freshwater mixes with salt water. a) Intertidal Zone b) Estuary c) Ecosystem 25) It is an area where land meets the sea. a) Intertidal Zone b) Estuary c) Ecosystem 26) It is created when sea level rises and falls in existing river valleys. a) Bar-built estuary b) Coastal Plain estuary c) Tectonic Estuary 27) It is formed when a lagoon or a bay is protected from the ocean currents in coastal area by sandbars. a) Bar-built estuary b) Coastal Plain estuary c) Tectonic Estuary 28) It is formed at the mouth of large rivers from sediment and silt depositing instead of being washed away by waves. a) Alpha b) Delta c) Bravo 29) It is the drifting apart of Earth's crust often caused by Earthquakes. a) Fjord Estuary b) Costal plain Estuary c) Tectonic Estuary 30) It is a U-shaped valleys that are formed by glacial action. a) Fjord Estuary b) Costal plain Estuary c) Tectonic Estuary 31) It is the rising and falling of the Earth's ocean surface. a) Intertidal Zone b) Estuary c) Tides 32) This area is covered with water only during storms and dry most of the time. a) Splash tidal zone b) High tide zone c) Low tide zone 33) It is covered with water during peaks of high tides. a) Splash tidal zone b) High tide zone c) Low tide zone 34) It is the most active region of all the zones. a) Middle tide zone b) High tide zone c) Splash tidal zone 35) This zone is mostly submerged in water. a) Middle tide zone b) High tide zone c) Low tide zone

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