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Science midterm 8th

QuestionAnswer
Science is the investigation and exploration of natural events and of the new information that results from those investigations.
Hypothesis is a possible explanation for an observation that can be tested by scientific investigations.
Technology is the practical use of scientific knowledge, especially for industrial or commercial use.
Scientific Law is a rule that describes a pattern in nature.
SI is the internationally accepted system of measurement.
Independent Variable it is change by the investigator t observe how it affects a dependent variable.
Dependent Variable is the factor you observe or measure during a experiment.
Map Legend a key that list all the symbols on the map.
Time Zone is the area on Earth's surface between two meridians where people use the same time.
Topographic Map shows the detailed shapes of Earth's surface, along with natural and human-made features.
Elevation the height above sea level of any point on earth's surface.
Contour Line are lines on a topographic map that connect points of equal elevation.
Slope is a measure of the steepness of the land.
Core the dense metallic center of Earth.
Geosphere is Earth's entire solid body.
Crust the brittle, rocky outer layer of Earth.
Gravity is the force that every object exerts on every other object because of there masses.
Mantle is the thick middle layer in the solid part of Earth.
Mountain are landforms with high relief and high elevation.
Plateaus are areas with low relief and high elevation.
Mineral is a natural occurring, inorganic solid with a definite chemical composition and an orderly arrangement of atoms or ions.
Magma is molten rock stored beneath the Earth's surface.
Lava when molten rock erupts on or near Earth's surface.
Mineralogist scientist who study the distribution of minerals, mineral properties, and their uses.
Density of an object is equal to its mass divided by its volume.
Gemstone is a rare and attractive mineral that can be worn as jewelry.
Rock is a natural, solid mixture of minerals or grains.
Rock Cycle the series processes that change one type f rock into another type of rock.
Volcanic Glass is rock that forms when lava cools to quickly to from crystals.
Cementation when minerals dissolved in water crystallize between sediment grains.
Clastic Rocks sedimentary rocks that are made up of broken pieces of minerals and rock fragments.
Chemical Rocks form when minerals crystallize directly from water.
Foliated Rock contain parallel layers of flat and elongated minerals.
Nonfoliated Rock metamorphic rocks that have mineral grains with a random, interlocking texture.
Weathering the mechanical and chemical processes that change objects on Earth's surface over time.
Oxidation combines the element oxygen with other elements or molecules.
Soil is a mixture of weathered rock, rock fragments, decayed organic matter, water, and air.
Pores these small holes and spaces.
Parent Material the starting material of soil.
Horizon are layers of soil formed from the movement of the products of weathering.
Longshore Current is a current that flows parallel to the shoreline.
Dune is a pile of windblown sand.
Landslide is the rapid downhill movement of soil, loose rocks, and boulders.
Delta is a large deposit of sediments that forms where a stream enters a large body of water.
Mass Wasting is the downhill movement of a large mass of rocks or soil because of the pull of gravity.
Isostasy is the equilibrium between continental crust and the denser mantle below it.
Compression squeezing stress
Tension stress that pulls something apart.
Folded Mountains are made up of layers of rock that are folded.
Divergent Plate Boundary when the plates are moving apart.
Transfer Plate Boundary when the plates slide by each other.
Convergent Plate Boundary the plates come together.
Created by: P.V.A.
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