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178 Cards in this Set

  • Front
  • Back
layer of earth that supports life, including land, sea and air
biosphere
center of the earth, consisting of molten ore
core
hard, outer covering of the earth--4-22 miles thick
crust
movement of the earth's crust
earthquake
middle layer of the earth
mantle
the blanket of air surrounding a heavenly body
atmosphere
the outermost layer of atmosphere
exosphere
cold middle layer of air
mesosphere
protective layer of condensed oxygen (O3, which has a peculiar smell) in the stratosphere
ozone layer
globe
sphere
second layer of air above the earth's surface
stratosphere
the upper layer of thin air which contains many electrically charged atoms and where temperatures increase with altitude
thermosphere
the layer of air closest to the earth's surface
troposphere
to wear away or break down into small pieces (L. erodere, to wear away)
erosion
any evidence of life from the past (L. fossum, to dig)
fossil
rock which has been changed by heat and pressure (Gk. meta=over + morphe=shape)
metamorphic rock
rock made up of layers of materials settled underwater (L. sedere=settle)
sedimentary rock
the overall weather pattern of an area (Gk. klima=slope)
climate
an imaginary line dividing the earth into the northern and southern hemispheres (L. aequus=equal)
equator
half of the earth (Gk. hemi=half + sphaira=globe)
hemisphere
how much moisture or water there is in the air (L. humidus=moist)
humidity
amount of rain or snow (L. praeceps=headlong)
precipitation
how hot or cold it is (L. temperare=to moderate)
temperature
the condition of the atmosphere at any given time or place (O.E. weder=weather)
weather
the smallest piece of any substance that can be identified as that substance (L. moles=a mass)
molecules
vacant or empty space (L. vacuus=empty)
vacuum
"higher" cloud (L. altus=high)
alto-
"wispy" (delicate, fleecy, feathery clouds made up of ice crystals, "mares' tails" high altitude) (L. cirrus=curl of hair)
cirrus or cirro-
"puffed up" (dense puffs, mounds or towers of clouds with flat bases (L. cumulus=heap)
cumulus or cumulo-
"dark rain" (dense rain or snow cloud) (L. numbus=a cloud)
nimbus or nimbo-
"layer" (straight layers of low altitude fog-like clouds) (L. sternere=to spread out)
stratus or strato-
energy that travels in waves, mostly from the sun, and travels very fast (186,200 miles per second) (O.E. leoht=light)
light
present in all places at the same time (L. omnis=all + praasens=being present)
omnipresent
the green color in plants which traps sunlight and makes photosynthesis possible (Gk. chloros=green + phyllon=leaf)
chlorophyll
sticking together (L. cohaerere=to stick together)
cohesion
the process by which a plant creates carbohydrates (Gk. photo=light + syn=together + thesis=a placing)
photosynthesis
to make fruitful or able to reproduce (L. fertilis=fruitful)
fertilize
the part of the plan that produces seeds (L. flox=flower)
flower
the colored flower-leaf (Gk. petalon=thin plate)
petal
the seed-bearing organ of a flower (L. pistillum=a pestle)
pistil
the fertilizing dust in a flower (L. pollen=fine flour)
pollen
the part of the plan that seeks nourishment for the plant; generally grows underground (O.E. wyrt=root)
root
very simple photosynthetic plants found in water or damp places, containing chlorophyll and other pigments (colors) and having no true roots, stems, leaves or seeds (L. alga=seaweed)
algae
a very simple plant that does not produce food by photosynthesis, but feeds on living or dead plants or animals; it does not have true roots, stems, leaves or chlorophyll, and reproduces by means of spores (L. fungus=mushroom or fungus)
fungus
cells sent out by bacteria, fungi, algae, mosses, ferns and so forth, capable of developing into new adult plants (Gk. spora=a sowing)
spores
a plant with a woody trunk (O.E. treow=a tree)
tree
trees that shed their leaves in autumn, generally broadleaf hardwoods (L. decidere=to fall down)
deciduous trees
trees that keep their leaves the year round, generally needle-leaved conifers (cone-bearing trees)
evergreen trees
trees in areas that are warm all year, usually broadleaf evergreen trees
tropical trees
an area, either cold or hot, which lacks moisture most of the year (L. deserere=to abandon)
desert
a hot region with distinct wet and dry seasons
monsoon region
the 25% of the earth's land surface over 3,300 feet above sea level, with plant and animal life varying according to altitude
mountain region
refers to the North (Arctic) and South (Antarctic) Poles (Gk. polos=a pivot)
polar
a warm area with wet and dry seasons, scrub type plants and only scattered trees
savanna
coniferous (cone-bearing) forest below the Arctic region (Russ. taiga=coniferous forest)
taiga
a deciduous forest in a region that has four seasons
temperate forest
a plan of grasses where not enough rain falls to sustain a forest, but which has more rain than a desert
temperate grassland
a hot area with heavy (59-78 inches) rainfall, teeming with plant and animal life
tropical rain forest
treeless plains in the Arctic Circle (Russ. tundra=marsh)
tundra
firm outer skeleton (Gk. exo=outside + skeletos=dried up)
exoskeleton
a large group of invertebrate animals which, in the adult stage, have 3 body segments, including a head, thorax, and abdomen, 3 pairs of legs and may have 2 pairs of wings (L. in=in + secare=to cut)
insect
creatures without a backbone (vertebrae) (L. in=not + vertebra=spine)
invertebrates
the immature "baby" form of animals that changes structurally to become adult through complete metamorphosis (L. larva=ghost)
larva
the process of change during the growth and development of insects (Gk. meta=over + morphe=shape)
metamorphosis
the immature form of an insect with incomplete metamorphosis (Gk. nymphe=bride)
nymph
an insect in the non-feeding, resting stage between the larval and adult form (L. pupa=girl, doll)
pupa
a family of animals which have 2 main body parts, 4 pairs of legs, and which breathe with book lungs (Gk. arachne=a spider)
arachnids
lungs characteristic of arachnids, which have tiny compartments like the pages of a book
book lungs
the head united with the thorax which form one section of the spider's body (Gk. kephale=the head + thorax=chest cavity)
cephalothorax
breathing holes in the abdomen of spiders and insects, and another name for the blow hole of whales (L. spirare=to breathe)
spiracles
having a variable body temperature and activity level that changes according to the temperature of the surroundings
cold-blooded
cold-blooded water animal with a backbone, fins, scales and gills (O.E. fisc=fish)
fish
the breathing organ of water animals whcih takes oxygen out of the water
gills
breathing holes in the abdomen of spiders and insects, and another name for the blow hole of whales (L. spirare=to breathe)
spiracles
having a variable body temperature and activity level that changes according to the temperature of the surroundings
cold-blooded
a thin-walled "sack" found in most fish which is used to enable fish to float at varying depths
swim bladder
creatures with backbones (L. vertebra)
vertebrates
internal, sponge-like breathing chamber of vertebrate land creatures (O.E. lungen=lung)
lungs
a cold-blooded vertebrate, with lungs for breathing air, dry, scaly covering for body, and a 3-chambered heart (except for alligator/crocodile, 4-chambered heart). Most live on land and lay eggs with tough, leathery shell and crawl on bellies or short legs (L. reptilis=creeping)
reptile
air-filled cavities that reach into almost every part of a bird's body, with connectinos to the lungs
air sacs
a warm-blooded vertebrate animal, having feathers, 2 wings (most can fly), 2 legs, scaly feet, and a 4-chambered heart with fastest heartbeat of all animals. Its lungs breathe air into air sacs and hollow bones. It has no teeth, but a beak, crop and gizzard and reproduces by laying hard-shelled eggs (O.E. brid)
bird
a sac-like enlargement in a bird's food tube, where food is stored before digesting
crop
a bird's muscular second stomach, where food is ground after being partially digested in the first stomach
gizzard
having the ability to maintain a constant internal body temperature
warm-blooded
the muscles dividing the chest cavity from the abdominal cavity (Gk. dia=through + phragma=fence)
diaphragm
a warm-blooded vertebrate covered with fur or hair, breathing air with lungs and a diaphragm, having a 4-chambered heart, and the largest and most developed brains. The female has glands that produce milk to feed her young and most give birth to live young (viviparous) (L. mamma=mother)
mammal
a group of mammals in Australia which give birth to incompletely developed young, and then care for them several months in an external pouch (Gk. marsypion=pouch)
marsupial
an organ of blood vessels that supply food and air exchange for the babies developing inside female mammals (Gk. plakounta=flat cake)
placenta
dwelling, home (L. habitare=to dwwell)
habitat
a cold-blooded vertebrate that hatches and develops in the water, breathing with gills, and then changes into an air-breathing land animal as an adult (Gki. amphi=on both sides + bios=life)
amphibian
dormant or inactive state, especially as in winter (L. hibernare=winter)
hibernation
a state of inactivity, especially during dry summer (L. aestus=summer)
estivation
a bony structure growing on the head of a male deer (L. ante=before + oculus=the eye)
antlers
a hard formation growing on the head of some goats, cows and other animals
horns
strong bands of tissues that hold bones together (L. ligare=to bind)
ligaments
someone who studies plant and animal life of ancient times (the fossil record) (Gk. palaios=ancient + logos=word)
paleontologist
a band of fibrous tissue which can produce movement (L. musculus=muscle)
muscles
the framework of the body (Gk. skeletos=dried up)
skeleton
meat-eater (L. carnis=flesh + vorare=devour)
carnivore
balanced relationship between the plants and animals in a given area (Gk. ekloge=house + L. system=organized whole)
ecosystem
plant-eater (L. herva=grass + vorare=devour)
herbivore
something that nourishes (L. nutrire=nourish)
nutrient
plant- and animal-eater (L. omnis=all + vorare=devour)
omnivore
the predominant influence (L. dominari=to be master)
dominant
able to reproduce (L. fertilis=fruitful)
fertile
the smaller, back portion of the brain that controls voluntary muscles and balance (L. cerebrum=the brain)
cerebellum
the largest part of the brain, the center of intelligence and movement (L. cerebrum=the brain)
cerebrum
inborn ability to do certain actinos without being taught
instinct
lowest portion of the brain that controls involuntary breathing and heartbeat (L. medulla=marrow)
medulla
to go from one place to another in search of warmer climates for breeding and food (L. migrare=to go)
migration
center for smell (L. olere=to smell + facere=to make)
olfactory bulb
pleats of tissue that carry extra blood (as to an eye of a hawk)
pecten
gland which controls growth and other functions
pituitary gland
membrane in cat's eye that reflects light like a mirror (L. pituita=mucus)
tapetum
a sieve-like bone structure in the mouth of one group of whales that allows the whale to strain out the tiny shrimp, plankton and krill from the ocean water (L. balaena=whale)
baleen
threatened with extinction
endangered
no living specimens or survivors (L. extinctus=dead, extinguished)
extinct
the second group of whales which have teeth, and eat fish and other sea creatures
toothed (odontoid)
Whales: humpback (males sing), fin (lives 70+ years, 2 tons at birth), orca (live in pods), blue (largest creature on earth, endangered), right (no dorsal fin, endangered), bowhead (hunted by eskimos, Arctic, endangered), sperm (can dive 3000 feet and stay down 90 minutes), gray (migrate 16,000 miles)
whales
the female reproductive cell (L. ovum=an egg)
ovum
to be with child (L. praegnans=with child)
pregnant
the male reproductive cell (Gk. sperma=seed)
sperm
the eternal part of man (L. spirare=breathe)
spirit
the womb, the female organ where a baby develops before birth (L. uterus=womb)
uterus
the covering of the cell, which acts like a "guarded wall", controlling what enters or leaves the cell (L. membrana=parchment)
cell membrane
the simplest unit of structure of living things (L. cella=small room)
cell
rod-shaped structures that funciton like magnets during cell division
centrioles
contain the cell's genetic information (Gk. chroma=color + soma=a body)
chromosomes
an arrangement of nucleic acids that contain the genetic master plan
DNA (deoxyribonucleic acid)
sheets of membrane that provide transportation for protein within the cell
endoplasmic reticulum
a group of flattened membrane sacs that package protein
Golgi body
the garbage disposal system of the cell, which dispose of invading materials and bacteria
lysosomes
the cell's power plants that produce the cell's energy
mitochondria
the control center of the cell which controls and directs all the cells activities
nucleus
strong fibers that connect the bones (L. ligare=to bind)
ligaments
the soft center of bones (O.E. meary=marrow)
marrow
the framework of the body (Gk. skeletos=dried up)
skeleton
to prepare food to be absorbed into the blood (L. digerere=to arrange)
digestion
the tube from the mouth to the stomach
esophagus
small sac which stores bile produced by the liver (O.E. gaella=gall + blaedre=a blister)
gall bladder
the bowels, the tubing from the stomach to the anus
intestines
the organ which secretes bile
liver
the digestive gland behind the stomach
pancreas
rippling contractions of the muscles in the intestines
peristalsis
lower portion of the large intestines
rectum
the chief organ of digestion
stomach
blood vessels giong away from the heart
arteries
the red, slightly thick liquid that circulates in man and animals
blood
network of tiny blood vessels connecting arteries and veins
capillaries
a special muscle that pumps blood to all parts of the body
heart
the liquid part of your blood that carries the food to each cell
plasma
plate-shaped cells that help to seal off broken blood vessels
platelets
red blood cells, the part of the blood that carries oxygen to the cells and carbon dioxide away from the cells
red corpuscles
blood vessels going toward the heart
veins
white blood cells which serve to fight infection
white corpuscles
tiny air cells in the lungs
alveoli
the windpipe or tube in the throat which connects the mouth and nose to the lungs
trachea
self-governing
autonomic
fiber which sends or receives messages from the brain
nerve
part of the nervous system that controls involuntary vital functions in an energy-conserving way
parasympathetic
portion of the nervous system that controls involuntary vital functions and the "fight or flight" response
sympathetic
fatty tissue
adipose tissue
living layer of skin below the epidermis
dermis
outer layer of skin, made up of dead cells
epidermis
gland which produces thread-like growth
hair follicle
protective layer of tissue covering body
integumentary
cells which produce a greasy liquid
oil gland
cells which produce a greasy liquid
sweat gland
a muscular bag in the pelvis that collects the urine
bladder
tissues and organs that produce chemicals called hormones that control many functions inside your body (how much you grow, how the food you eat is digested and used) includes the pituitary, the thyroid, the parathyroid, reproductive organs, the adrenal and the pancreas
endocrine system
a pair of organs that excrete urine
kidneys
the tubes from the kidneys to the bladder
ureter
the yellow-colored liquid that contains water soluble wastes from the body
urine
muslces that extend or stretch out
extensors
muscles that flex or bend up
flexors
muscles which work without conscious thought
involuntary muscles
a band of fibrous tissue that can produce movement
muscle
muscles we can move at will
voluntary muscles