Mrs. Lugo Science



6th Grade Earth Science Semester 1 Exam ReviewExam will include Chapters 1, 2, 7, 8, 9 10.1, 10.2, 13.1, 14Answer the following to review for your semester 1 examCh. 1-2 Nature of ScienceWhy do scientists conduct experiments?What is a theory?What is the difference between replication and repetition?What units of measurement are used in science? What process occurs after collecting data?Ch. 8 Earth’s HistoryHow are fossils formed? 3 waysExplain geologic time.What are eras of geologic time? In what era did life first appeared on Earth?Explain the Law of Superposition.Ch. 7 Earth’s StructuresWhat are the layers of the earth?Explain weathering, deposition, erosion, compacting, and cementation.Explain the Rock Cycle.What are the characteristics of Karst topography?Ch. 9 Plate TectonicsExplain convection currents.What is the Theory of Plate Tectonics? What are the three kinds of boundaries? What are the three forms of heat transfer?Ch. 10 Volcanoes 10.1-10-2 What are the causes of pyroclastic or quiet eruptions?Where are you likely to find volcanoes?What causes eruptions?Ch. 14 Weathering/Erosion How do continental and valley glaciers differ?Why are floodplains important in agriculture?How does abrasion affect Florida’s coastline?Answers1-Why do scientists conduct experiments?*to find out the answer to a question2- What is a theory?*a well-tested explanation based and confirmed by factsWhat is the difference between replication and repetition?*repetition is an experiment done by one scientist while replication is the same experiment performed by othersWhat units of measurement are used in science?*metricWhat process occurs after collecting data?*drawing conclusionsHow are fossils formed? 3 ways*cast/mold, changed into minerals, preserved by ice or amberExplain geologic time* The time since the Earth was formedWhat are eras of geologic time?*PreCambrian, paleozoic, mesozoic, cenozoicIn what era did life first appeared on Earth?*Pre-CambrianExplain the Law of Superposition*The layer on top is the youngest layerWhat are the layers of the earth?Inner Core, outer core, mantle, crustExplain weathering, deposition, erosion, compacting, and cementation*breaking away of rocks, carrying away of rocks, settling of rocks, rocks squeezed together, rocks stick to each otherExplain the Rock Cycle* Rocks change from one type to another depending on the forces exerted on themWhat are the characteristics of Karst topography?*limestone undergoing chemical weathering due to carbonic acid, sinkholes likelyExplain convection currents.*Convection currents occurs when liquid and gases change densities du to heatWhat is the Theory of Plate Tectonics?* the outer rigid layer of the earth (the lithosphere) is divided into a couple of dozen "plates" that move around across the earth's surface relative to each other What are the three kinds of boundaries?*transform, divergent, convergent What are the three forms of heat transfer?*conduction, convection, radiationWhat are the causes of pyroclastic or quiet eruptions?*silica content of the magmaWhere are you likely to find volcanoes?* along subduction zones, mid-ocean ridges, and hot spotsWhat causes eruptions?*Gases trapped in the magmaHow do continental and valley glaciers differ?*continental glacier cover continents and form easier than valley glaciersWhy are floodplains important in agriculture*the settling of sediment caused by floods bring needed mineral to the soil which makes more fertileHow does abrasion affect Florida’s coastline?*They change the shape due to exposure to the wind ................
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