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Science Vocabulary
Sciiiiience vocab
Term | Definition |
---|---|
Law Of Conservation Of Mass | Mass cannot be created nor destroyed, just change forms |
Chemical Change | Reaction that forms a new substance. Evidence includes: Formation of precipitate, change of temperature, change of color, and formation of gas (Bubbles) |
Reactant | The materials of the reaction that cause it to happen |
Product | The materials formed from the reaction |
Flammability | Able to burn, or catch fiew |
Precipitate | Material formed as a result of chemical change |
Phase Change | Changing from one state of matter to another |
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 to transmit electricity, heat |
Unconformity | When a 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-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 each other and form mid-oceans 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 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 atmospheric information of an area |
Geologic Time Scale | The organization of the Earths history that connects events that happened to the structure of the Earth 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 | Super-continent that existed over 250 mya |
Theory Of Continental Drift | Theory that explains how the continents move |
Erosion | Movement of sediment by wind, water |
Habitat | A place where an organism makes it home, meets the environmental condi |