amplitude
the maximum displacement of a periodic wave; greatness of magnitude |
atmosphere
the mass of air surrounding the Earth; a particular environment or surrounding influence; the weather or climate at some place |
atoms
the smallest possible amount of matter which still retains its identity as a chemical element, now known to consist of a nucleus surrounded by electrons. |
balanced
hold or carry in equilibrium |
biosphere
the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist |
cells
the minute elementary structures, of which the greater part of the various tissues and organs of animals and plants are composed |
commensalism
the relation between two different kinds of organisms when one receives benefits from the other without damaging it |
conservation of energy
the fundamental principle of physics that the total energy of an isolated system is constant despite internal changes |
dependent variable
a variable in a logical or mathematical expression whose value depends on the independent variable |
electric current
a flow of electricity through a conductor |
electrical energy
energy made available by the flow of electric charge through a conductor |
electromagnet
a temporary magnet made by coiling wire around an iron core; when current flows in the coil the iron becomes a magnet |
electromagnetic spectrum
the entire range of wavelengths of all known electromagnetic radiations extending from gamma rays through visible light, infrared, and radio waves, to X-rays |
energy pyramid
graphical representation used for showing the biomass or productivity at each tropical level in a given ecosystem |
energy transformation
the process of changing one form of energy to another |
food web
a community of organisms where there are several interrelated food chains |
forms of energy
in the context of physical sciences, identify energy as forms as Kinetic, Potential, and more. |
geosphere
the solid part of the earth consisting of the crust and outer mantle |
hydrosphere
watery layer of the earth's surface |
independent variable
a variable whose values are independent of changes in the values of other variables |
magnetic field
the lines of force surrounding a permanent magnet or a moving charged particle |
mutualism
the relation between two different species of organisms that are interdependent; each gains benefits from the other |
parasitism
the relation between two different kinds of organisms in which one receives benefits from the other by causing damage to it (usually not fatal damage) |
reflection
image of something as reflected by mirror; remark expressing careful consideration |
refraction
turning or bending of any wave, such as light or sound wave, when it passes from one medium into another of different optical density |
relative age
the age of a rock or formation given relative to other rocks or formation, usually defined as a zone fossil name |
sedimentary rocks
rock formed from consolidated clay sediments |
technology
application of science, especially to industrial or commercial objectives |
unbalanced forces
tension is the pulling force exerted by a string, cable, chain, or similar solid object on another object |
wave
a movement up and down or back and forth; something that rises rapidly |
wave length
the distance from a point or phase in a wave to the nearest point at which the same phase occurs |
