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STAAR Review 8th Sci
Prioritized review of 8th Sci Terms
Term | Definition |
---|---|
abiotic | All of the non-living things in an ecosystem |
Chemical Change | A change in the chemical composition of a substance caused by rearranging of atoms. |
Compound | A molecule or substance containing two or more different elements |
convection | energy transferred by the circular motion of liquids & gases. |
divergent boundary | A plate boundary where two plates move away from each other. |
hurricane | rotating low pressure area that forms over warm oceans and produces heavy rains & strong winds. |
light year | The distance light can travel in one year. This is used to measure huge distances in space like the distance between stars or galaxies. |
metalloid | Elements that sit on or just below the stair step line. They have properties of both metals and nonmetals. |
nebula | A large area of dust and gas where new stars are forming. |
photosynthesis | Process where producers use energy from sunlight to convert carbon dioxide and water into glucose and oxygen. |
producer | Organisms that produce energy through photosynthesis that support the entire food chain. Grasses, plants, trees, bushes, etc. |
products | The substances that are produced in a chemical reaction. Located on the right side of the equation. |
Radiation | transfer of thermal energy through matter or space as electromagnetic waves |
reactants | The chemicals that are reacting together in a chemical reaction. Located on the left side of the equation. |
valence electron | The electrons located farthest from the nucleus that determines how chemically reactive the atom will be. |