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Science midterm 8th
Question | Answer |
---|---|
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. |