Grade 8 Science and Technology/Engineering Test

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Science and Technology/EngineeringSession 2ID:226418 3189033_AR1.eps C Common●27Eurasian PlateOn the map below, dark circles indicatethe positions of volcanoes in the “Ringof Fire” in and around the Pacific Ocean.Dark lines indicate tectonic plateboundaries of Earth’s crust.NorthAmericanPlateID:229445 3189022_AR1.eps D Common●28The two beakers below contain pure water.100 mL025507510075502550 mL0255025Indo-Australian PlateCocos PlatePacific PlateKeyPlate boundaryVolcanoNazcaPlateWhich of the following properties is thesame for both of these samples?A. massB. weightC. volumeD. boiling pointAccording to this map, which of thefollowing describes where volcanoes aremost likely to form in the Ring of Fire?A. Volcanoes form in the middle of atectonic plate.B. Volcanoes form below the surfaceof tectonic plates.C. Volcanoes form where tectonic platesmeet other plates.D. Volcanoes form where earthquakesare least likely to occur.412
Science and Technology/EngineeringSession 2ID:252642 A Common●29Index fossils help scientists estimatethe age of a rock because index fossilspecies only existed for a relatively shorttime. What happened to the species thatare now used as index fossils?A. They became extinct.B. They changed their diets.C. They hid in marine sediments.D. They migrated to new environments.ID:229383 3227113_AR1.eps, 3227113_ C Common●30Below are four ball-and-stick modelsrepresenting compounds. Which of thesemodels best represents ammonia (NH 3)?A.B.C.D.413
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Grade 8 Science and Technology/Engineering Test

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