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2017 Science Final

mass amount of matter in an object
volume amount of space an object occupies
density mass and volume; how tightly packed the molecules are
independent variable controlled by experimenter
dependent variable factor being observed in an experiment
constant factors that remain the same for all set-ups
orbit (revolution) path around the sun=year (or moon's path around a planet)
rotation spin on an axis=day
solar eclipse earth-moon-sun; sun is blocked
lunar eclipse sun-earth-moon; earth shadows moon
humidity amount of moisture in the air
altitude distance above sea-level
latitude distance from the equator
evaporation liquid to gas
condensation gas to liquid
precipitation rain, snow, sleet, hail; water returns to Earth's surface
front boundary between two air masses
climate weather over a period of time
weather state of the atmosphere at a given place and time
lithosphere solid rock portion of Earth's surface
hydrosphere water on Earth's surface
Pangea super continent
weathering break down of Earth's surface into sediments
erosion carrying away/transfer of Earth's sediments
folding bending of rock layers
faulting breaking of rock layers
divergent boundary two plates pull apart
convergent boundary two plates collide
transform fault boundary two plates slide past one another
convection currents heating and cooling of mantle-causes plates to move
principle of superposition deeper rock layers are older than surface layer
unconformity gap in geologic history due to missing rock layers
evolution change in a population of a species over time
gradualism evolution occurs slowly and steadily
fossils remains of life
natural selection survival of the fittest
variation differences between organisms of the same species
adaptation variations that aid in survival
mutation change in gene or chromosome that leads to variations
asexual reproduction one parent; identical offspring
sexual reproduction two parents; variety of offspring
fertilization union of sperm and egg
mitosis division of body cells=identical cells
meiosis creation of sex cells=1/2 as many chromosomes
internal fertilization occurs inside the body (humans)
external fertilization occurs outside the body (fish)
chromosome in nucleus; has genes; carries genetic information
genotype gene make-up of a trait (Tt)
phenotype appearance of a trait (tall)
dominant powerful gene; blocks recessive; capital letter
recessive weak gene; only shows up in homozygous form; lower-case
hybrid two different genes (one dominant, one recessive)
homozygous two of the same genes (either both dominant or both recessive)
arteries vessel that carries rich blood away from the heart
veins vessel that carries depleted blood back to the heart
capillaries vessel where exchange occurs
red blood cells transport oxygen and CO2
white blood cells aid in immunity
platelets help heal wounds
charge gain or loss of electrons
resistance slows the flow of electricity
voltage causes energy to flow; battery
potential difference power difference between battery and wires
current speed of electric flow
conductor loosely bound electrons-allows electricity to flow
insulator tightly bound electrons-resists electrical flow
current electricity flowing electrons
static electricity gain or loss of electrons
electrical discharge result of electrons moving off a charged object
ground wire highly conductive, protective source for high electrical output
permanent magnet keeps magnetism
induced magnet temporary magnetism
electromagnet caused by the flow of electricity through a coiled wire
magnetic poles greatest magnetic force
magnetic field area around a magnet where magnetic forces act
Created by: KRago