| A | B |
|---|
| abiotic | an environmental factor not associated with the activities of living organisms |
| acceleration | rate of change in velocity |
| air resistance | force of air on moving objects |
| allele | any of two or more alternate forms of a gene that an organism may have for a particular trait |
| amplitude | in a wave, the maximum absolute variation of the function |
| asexual reproduction | a form of reproduction in which new individuals are formed without the involvement of sex cells |
| biodiversitv | the existence of a wide range of different species in a given area or specific period of time |
| biotic | factors in an environment relating to living organisms |
| calorie | unit of energy; the amount of heat needed to raise one gram of water one degree Celsius at standard atmospheric pressure |
| chemical weathering | the breakdown of rocks at or near Earths surface as a result of chemical processes |
| circuit | a complete path for the flow of current |
| conduction | the direct transmission of heat through a medium |
| conservation of energy | energy cannot be created nor destroyed but only changed from one form to another |
| convection | heat transfer in a gas or liquid by the circulation of currents |
| crest | the peak or highest point on a wave |
| crust | outermost layer of Earth |
| dependent variable | factor being measured or observed in an experiment |
| deposition | the process by which sediment is carried and left in a certain area |
| diffraction | the change in direction of a wave caused by traveling through an opening |
| dominance | tendency of certain (dominant) alleles to mask the expression of their corresponding (recessive) alleles |
| ecosystem | an ecological community together with its environment, functloning as a unit |
| efficiency | the relative effectiveness of a system or device determined by comparing input and output |
| electromagnetic radiation | the emission and propagation of the entire range of electromagnetic spectrum including: gamma rays, x-ravs, ultraviolet radiation, visible light, microwaves, and radio waves |
| electron | a stable elementary particle that is negatively charged and orbits the nucleus of an atom |
| entropy | a measure of randomness or disorder of a closed system |
| erosion | a combination of natural processes in which matenals from Earth's surface are loosened, dissolved, or worn away and transported trom one place to another |
| fossil fuels | animal or plant remains used for fuel |
| frequency | the number of cycles or waves per unit time |
| gene | a specific part of a chromosome or sequence of DNA that determines a particular feature or characteristic in an organism |
| heterozygous | cell or organism that has two different alleles for a particular trait |
