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68 Cards in this Set

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chemical weathering
the process that breaksdown rock through chemical changes
contour interval
the difference in elevation from one contour line to the next
contour line
a line on a topographic map that connects points of equal elevation
deposition
process in which sediment is laid down in new locations
elevation
height above sea level
erosion
the process by which water, ice, wind, or gravity moves weathered rocks
index contour
a heavier contour line that is labeled with the elevation
mechanical weathering
the process that breaks down rock through physical changes
relief
the difference in elevation between the highest and lowest parts of an area
topographic map
a map that shows the surface features of an area
topography
the shape of the land determined by elevation, relief, and landforms
weathering
chemical and physical process that breaks dowm materials on earth
autotroph
an organim that makes its own food
bacteriophage
a virus that infects bacteria
cell
the basic building block of living things
eukaryote
an organism with cells that contain nuclei and organelles
heterotroph
an organism that connot make its own food
homeostasis
the maintenance of stable internal conditions despite outside changes
hypha
one of many branching, thread-like tubes an the body of a fungus
muticellular
an organism that is made up of many cells
organism
a living thing
prokaryote
an organism whose cells lack a nucleus and organelles
spore
a tiny cell that is able to grow into a new organism
taxonomy
the scientific study of how living things are classified
unicellular
a type of organism that is made up of a single cell
virus
a small, nonliving particle that invades and then reprodeuces inside a living cell
adaptation
a characteristic that helps an organism survive in its environment
anus
the opening at the end of an organism's digestive system
asexual reproduction
the process by which a single organism produces a new organism identical to itself
atrium
an upper chamber of the heart; holds the blood as it arrives in the heart
bilateral symmetry
line symmetry; the quality of being divisible into two halves that are mirror images
canine teeth
sharply pointed teeth that stab and tear food
carnivore
an animal that only eats other amimals
complete metamorphosis
characterized by four dramatically different stages- egg, larva, pupa, and adult
contour feather
a large feather that helps give shape to a bird's body
crop
a bird's internal storage tank that allows it to store food in its body after eating it
down feather
short, fluffy feathersthat trap heat and keeps a bird warm
ectotherm
an animal whose body does not produce much internal heat
endoskeleton
an internal skeleton
endotherm
an animal whose body controls and regulates its temperature by controlling the internal heat it produces
exoskeleton
a waxy, waterproof outer shell
gill
an organism's breathing organ that removes oxygen from water
gizzard
a thick-walled, muscular part of a bird's stomach that squeezes and grinds partially digested food
gradual metamorphosis
characterized by having no dramatically different stages- egg, nymph, and adult only
(no larva or pupa stage)
herbivore
an animal that eats only plants
incisor
flat-edged teeth used to bite off and cut parts of food
invertebrate
an animal that does not have a backbone
larva
the immature form of an animal that looks very different from the adult
mammary gland
the organs that produce the milk which mammals feed their young
medusa
the cnidarian body plan characterized by an upside-down bowl shape and is adapted for a free-swimming life
molars
teeth that, along with premolars, grind and shred food into tiny bits
molting
the process of shedding and outgrown exoskeleton
notochord
a flexible rod that supports a chordate's back
nymph
a stage of gradual metamorphosis that usually resembles the adult insect
omnivore
an animal that eats both plants and animals
polyp
the cnidarian body plan characterized by a vase-like shape and is adapted for life attatched to an underwater surface
premolars
teeth that, along with molars, grind and shred foofood into tiny bits
pupa
the second stage of complete metamorphosis, in which an insect is enclosed in a protective covering and gradually changes from a larva to an adult
radial symmetry
the quality of having many lines of symmetry that all pass through a central point
radula
a flexible ribbon of teeth in mollusks
regeneration
the ability of an organism to regrow body parts
sexual reproduction
the process by which a new organism forms from the joining if two sex cells
(egg and sperm)
species
a group of organisms that can mate with each other and produce offspring which can also mate and reproduce
swim bladder
an internal gas-filled organ that helps a bony fish stabalize its body at different water depths
ventricle
the lower chamber of the heart, which pumps blood out to the lungs/gills and body
vertebra
the bones that make up the backbone of an animal
vertebrate
an animal that has a backbone
water vascular system
a system of fluid-filled tubes in an echinaderm's body