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science vocabulary

TermDefinition
law of conservation of mass mass cannot be created nor destroyed just change forms
reactant the materials of the reaction that cause it to happen
product the materials formed from the reaction
flammablility able to burn or catch on fire
precipitate materials formed as a result of chemical change
phase change changing from one state of matter to another
chemical change reaction that forms a new substance
physical property characteristic that can be observed with your senses or measured
period a row on the periodic table
group or family a column on the periodic table
atomic mass the average number of protons and neutrons in an atom
element a pure substance that has the 2 or more of the same atoms
compound two or more elements chemically bonded example water
conductivity able 2 transmit electricity heat
unconformity when a rock disturbs a series of undisturbed layers
law of superstion in an undisturbed set layer of rock the younger rock is on top and the oldest rock is on the bottom
half-life when the amount of a radioactive element is decreased by half after a period of time
absolute dating using radioactive elements to determine the exact age of a fossil rock or artifact
relative dating using the law of superposition and index fossils to give an estimate of a fossil or rock layers
index fossils fossils that we know the exact age but use it for a comparison
convergent boundary when plates push together and form mountains
divergent boundary when plates move away from eachother and form mid-ocean ridges and new crust
transform boundary when plates slide or rub against each other forming faults and earthquakes
fault a break or fracture in rock layers
igneous rock rock formed by material from volcanos
weathering breaking down of rock by movement (mechanical) interactions with living things (biological) and reactions (chemical)
ice core a sample of ice that shows the atmospheric information of an area
geologic time scale the organization of the earths history that connects events the happened to the structure of the earths to the changes in the organisms
mantle middle layer of the earth that causes the tectonic plates to move
convection current cycling of material warm material is less dense and rises cooler material is more dense and sinks
pangaea supercontinent that existed over 250 mya
theory of continental drift theory that explains how the continents move
erosion movement of sediment by wind water
esturary
polarity
cohesion
adhesion
groundwater
impermeable
permeable
glacier/ice cap
solvent
aquifer
river basin/ water shed
ocean current
reservior
cold seep
phytoplankton
deep ocean (bentic zone)
brackish water
chemosynthesis
upwelling
salinity
shore (intertidal zone)
open ocean (pelagic zone)
tributary
eutrophication
Created by: 6326193265