Science Glossary
Terms
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- atom
- smallest unit of element retaining all properties of element
- acid
- solution with excess of hydrogen atoms H+
- abyssal plain
- deep ocean floor, 75% Pacif, 30% Atlantic
- carbon cycle
- cycle of carbon atoms that rotate energy for living organisms and inanimate environ.; controls production of food & energy for living organisms; regulates earth's temp
- acceleration
- change in velocity over time
- base strong
- high ionized hydroxide
- aphelion
- earth furthest from sun
- acid weak
- resists complete ionization, or disassociation when combined with water, ph 3-6 (closer to neutral)
- absolute dating
- rock's age using geological and biological patterns
- capacitor
- a component that can be added to an electrical circuit to regulate voltage by storing a charge in an electric field between 2 plates or surfaces that are positioned close together, but do not touch
- asteriod
- oddly shaped planets, wide, elliptical orbit
- blue moon
- 2nd full moon in month
- animalia
- most complex organisms; multi-cellular, heterotrophic, lack rigid cell walls, mobile, tissues in internal organs, sensory organs, nervous system
- cation
- loses electron and becomes +charged
- astronomical unit
- average distance between earth and sun 93 million miles
- battery
- chem reaction, moves electrons at poles
- black dwarf
- core of exhausted star no longer emitting energy
- atomic number
- combined # of protons and electrons in neutral atom
- ionic bond
- oppositely charged ions of 2 atoms attract 1 another and 1 atom loses extra electrons to fill outer shell of other atom
- base
- excess of hydroxide atoms OH-
- abrasion
- erosion by wind
- biological weathering
- molecular disintegration of minerals contained by rocks, caused by plants/animals
- amplitude
- greatest absolute value of an event's possibility
- carbohydrate
- organic compounds, photosynthetic plants produce, energy to living orgs
- calorie
- raise 1 g. water temp by 1 degree C
- covalent bond
- 2 atoms share pairs of electrons
- black hole
- core of massive starthat survives supernova explosion to collapse until infinitely heavy and dense
- acid strong
- readily disassociates in water, high concentration of ionized hydrogen
- asthenosphere
- upper mantle, rock that permits movement of lithospheric plates
- Boyle's law
- fixed gas at fixed temp Pressure & Volume- 1 increases, other decreases
- base weak
- 8-10, closer to neutral