constellation
a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure. Modern astronomers divide the sky into eighty-eight constellations with defined boundaries
consumer
a person who purchases goods and services for personal use.
convection
the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.
covalent bond
A chemical bond formed by the sharing of one or more electrons, especially pairs of electrons, between atoms.covalent bond in Science Expand.
crest
the top of something, especially a mountain or hill.
crust
form into a hard outer layer.
decomposer
an organism, especially a soil bacterium, fungus, or invertebrate, that decomposes organic material.
density
the degree of compactness of a substance
dependent variable
a variable (often denoted by y ) whose value depends on that of another.
deposition
the action of deposing someone, especially a monarch.
diversity
a range of different things.
DNA
deoxyribonucleic acid, a self-replicating material present in nearly all living organisms as the main constituent of chromosomes. It is the carrier of genetic information.
sedimentary rock
Rock that has formed through the deposition and solidification of sediment, especially sediment transported by water (rivers, lakes, and oceans), ice (glaciers), and wind. Sedimentary rocks are often deposited in layers, and frequently contain fossils.
sedimentation
the deposition or accumulation of sediment
seismic wave
an elastic wave in the earth produced by an earthquake or other means.
sexual reproduction
the production of new living organisms by combining genetic information from two individuals of different types (sexes). In most higher organisms, one sex (male) produces a small motile gamete that travels to fuse with a larger stationary gamete produced by the other (female).
soil
the upper layer of earth in which plants grow, a black or dark brown material typically consisting of a mixture of organic remains, clay, and rock particles.
solar system
the collection of eight planets and their moons in orbit around the sun, together with smaller bodies in the form of asteroids, meteoroids, and comets.
solid
not hollow or containing spaces or gaps.
solubility
Solubility is the property of a solid, liquid, or gaseous chemical substance called solute to dissolve in a solid, liquid, or gaseous solvent.
solution
liquid mixture in which the minor component (the solute) is uniformly distributed within the major component (the solvent).
sound
vibrations that travel through the air or another medium and can be heard when they reach a person's or animal's ear.
Species
the visible form of each of the elements of consecrated bread and wine in the Eucharist.
speed
rapidity of movement or action.
