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Final exam

Science 1st marking period

Theory An explanation for a phonamena that is based off of an observation, experiment,and reasoning; that does not conflict with any experiment results or observations.
Geology The scientific study of the origin,history, and structure of earth and the process tht shapes the Earth
Independant variable The variable in the experiment that the scientist changes
atmosphere A mixture of gases that surrounds a planet or moon
Ecosyststem A community organisms in there natural environment
Contour line A line that connects points with equal elevation on a map
Mineral A natural,usually Inorganic solid that has a characteristic chemical composition, an orderly internal structure, and a characteristic set of physical properties
Rock cycle The series of processes in which rock forms, changes from one type to another, is destroyed, and forms again by geological processes.
Metamorphic rock A type of rock that changes from one kind to another by heat or pressure.
Fossil fuel A nonrenewable energy resource formed from old organism remains
Hydroelectric energy Electric energy produced by water
Relative age The age of an object in relation to other objects (not in number form)
Uniformitaianism A principal that geologic processes that occurred in the past can be explained by today's geological processes
Period A u it of geological time that is longer than epoch but shorter than a era
Geologic column An ordered arrangement of rock of rock layers that is based in the relative ages of the rocks and in which the older rocks are at the bottom.
Continental drift The hypothesis that the continents were one major landmass ad broke apart then drifted into their present positions
Divergent boundaries Boundries of plates that moved apart from each other and leave a mid ocean ridge
Seismograph The instrument that records the vibrations in the ground
P wave The primary wave that moves up and down and is the fastest wave
Epicenter The point on Earth's surface directly above an earthquake's starting point, or focus
Observations Observing things using the 5 senses
Earth sciences The scientific of earth and the universe around it
Hypothesis An educated guess
Biosphere The part of the earth where life exists
Legend A list of Mao symbols and their meanings (key)
Scale the relationship between the distance shown on the map and in real life.
non silicate A mineral that does not contain silicon and oxygen
Silicate A mineral that contains a combination of silicon and oxygen and may contain one or more metals
Sedimentary rock Loose rock or sediment that has been compacted or cemented together by heat or pressure.
Extrusive igneouse rock Rocks that forms from the cooling and solidification of lava at Earth's surface
Nuclear fission The process by which the nucleus of a heavy atom splits into two or more fragments;the process releases neutrons and energy
Recycling The process of recovering valuable or useful materials from waste or scrap;
Index fossil A fossil used to show the ages of the surrounding rocks
Eras A Unit o geological time that includes two or more periods
Sea floor spreading The process by which new oceanic lithosphere (sea floor) forms magma rises to Earth's surface and solidifies at a mid ocean ridge
Paleomagnetism The study of the alignment of magnetic minerals in rock, specifically if it relates to the magnetic poles
Elastic rebound When an object's shape is deformed by a force and when that force is released the object returns to its original shape
S wave The secondary wave hat moves from side to side and is the 2nd fastest wave
Volcanism Any activity tha includes the movement of magma toward or onto Earth's surface
Explosives eruption A volcanic eruptin that is Manley felsic lava which is sticky and creates a large eruption
Hydrosphere The portion of the Earth that is water
Elevation The height of an object above sea level
Topography The size and shape of the land surface features of a region, including it s relief
Cleavage The tendency of a mineral to split along specific planes of a weakness to form a smooth flat surface
Regional metamorphism A change in the texture, structure, or chemical composition of a rock due to changes in temperature and pressure over a large area, usually because of tectonic forces
Igneous rock Rock that forms when magma cools and solidifies
Nuclear fusion The process by which nuclei of small atoms combine to form new, more massive nuclei; this process releases energy
Solar energy The energy received by Earth from the sun in the form of radiation
Geothermal energy The energy produced by heat within the earth
Absolute age Age of an object(using numbers)
Law of superposition The principal that a sedimentary rock layer is older than the layers above itabd younger than the layers above it the layers are not disturbed
Epochs A geologic time that is longer than an age but shorter than a period
Plate tectonics The theory hat explains how large prices of the lithosphere, called plates, move an change shape
Transform boundaries 2 plate boundaries that slide past eachother
Convergent boundaries 2 plate boundaries converge into each other and one plate slides under the other one
Focus The location within the earth along a fault at which the first motion of an earthquake occurs
Hot spot A volcanically active area of Earth's surface, commonly far from a tectonic plane boundary ( Hawaii )
Pyroclastic material Fragments of rock that form during a volcanic eruption
Mine reclamation Mining companies are asked to put the land back to how it was after mining
Queit eruption Volcanic eruptions that mainly include magic magma and the lava just flows down the volcanoe
Closed system When energy but not matter is exchanged with the surroundings
Open system When both matter and energy are exchanged with the surroundings
Solar collector An object that collects sunlight
Created by: summerkizo