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science vocab

law of conservation of mass mass cannot be created nor destroyed, just change forms
reactant the material of the reaction that cause it to happen
product the material formed from the reaction
flammability able to burn, or catch on fire
precipitate material 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 evidence includes: formation of precipitate change of temperature , change of color, and formation of a gas (bubbles)
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 able
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 to transmit electricity, heat
unconformity when rock disturbs a series of undisturbed layers
law of superposition in an undisturbed set layer of rock, the younger rock is on top and the oldest rock is on the bottom
half-time 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
transform boundary when plates slide or rub against each other and form mid-ocean ridges, and new crust
fault a break or fracture in rock layers
igneous rock rock formed by material from volcanoes
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 atmosphere information of an area
geologic time scale the organization of the earth history that connects events that happened to the structure of the earth to the changes in the organisms
mantel 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.
pangae supercontinent that existed over 250 mya
theory of continental drift theory that explains how the continents move
erosion movement of sediment by wind, water
glacier/ice cap
river basin/ water shed
ocean current
cold seep
deep ocean (benthis zone)
brackish water
shore (intertidal zone)
open ocean (pelagic zone)
Created by: 8380262