Picture This
mass
(Roman Catholic Church and Protestant Churches) the celebration of the Eucharist
arch
(architecture) a masonry construction (usually curved) for spanning an opening and supporting the weight above it
Comet
(astronomy) a relatively small extraterrestrial body consisting of a frozen mass that travels around the sun in a highly elliptical orbit
equinox
(astronomy) either of the two celestial points at which the celestial equator intersects the ecliptic
Absolute Magnitude
(astronomy) the magnitude that a star would have if it were viewed from a distance of 10 parsecs (32.62 light years) from the earth
DNA
(biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
Deoxyribonucleic Acid
(biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix
Cell
(biology) the basic structural and functional unit of all organisms
cell
(biology) the basic structural and functional unit of all organisms
phloem
(botany) tissue that conducts synthesized food substances (e.g., from leaves) to parts where needed
chemical reaction
(chemistry) a process in which one or more substances are changed into others
pH
(chemistry) p(otential of) H(ydrogen)
pH scale
(chemistry) p(otential of) H(ydrogen)
electronegativity
(chemistry) the tendency of an atom or radical to attract electrons in the formation of an ionic bond
immiscible
(chemistry, physics) incapable of mixing
software
(computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory
kettle
(geology) a hollow (typically filled by a lake) that results from the melting of a mass of ice trapped in glacial deposits
esker
(geology) a long winding ridge of post glacial gravel and other sediment
circuit
(law) a judicial division of a state or the United States (so-called because originally judges traveled and held court in different locations)
radiation
(medicine) the treatment of disease (especially cancer) by exposure to radiation from a radioactive substance
advection
(meteorology) the horizontal transfer of heat or other atmospheric properties
Hypertonic
(of a solution) having a higher osmotic pressure than a comparison solution
molecule
(physics and chemistry) the simplest structural unit of an element or compound
coriolis effect
(physics) an effect whereby a body moving in a rotating frame of reference experiences the Coriolis force acting perpendicular to the direction of motion and to the axis of rotation
energy
(physics) the capacity of a physical system to do work
Gravity
(physics) the force of attraction between all masses in the universe
gravity
(physics) the force of attraction between all masses in the universe
universal gravitational constant
(physics) the universal constant relating force to mass and distance in Newton's law of gravitation
pangaea
(plate tectonics) a hypothetical continent including all the landmass of the earth prior to the Triassic period when it split into Laurasia and Gondwanaland
sublimation
(psychology) modifying the natural expression of an impulse or instinct (especially a sexual one) to one that is socially acceptable
entropy
(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work
adiabatic process
(thermodynamics) any process that occurs without gain or loss of heat
Safety Goggles
Used to protect eyes
Extrusive rocks
What type of igneous rocks form from magmas that reach the earth's surface?
conservation of angular momentum
When no external torque acts on an object or a system of objects, no change of angular momentum can occur. Hence, the angular momentum before an event involving only internal torques or no torques is equal to the angular momentum after the event.
Kingdom
a basic group of natural objects
wedge
a block of wood used to prevent the sliding or rolling of a heavy object
abacus
a calculator that performs arithmetic functions by manually sliding counters on rods or in grooves
neuron
a cell that is specialized to conduct nerve impulses
carbon dating
a chemical analysis used to determine the age of organic materials based on their content of the radioisotope carbon-14
Ionic Bond
a chemical bond in which one atom loses an electron to form a positive ion and the other atom gains to electron to form a negative ion
Covalent bond
a chemical bond that involves sharing a pair of electrons between atoms in a molecule
hydrolysis
a chemical reaction in which water reacts with a compound to produce other compounds
krypton
a colorless element that is one of the six inert gases
Hypertension
a common disorder in which blood pressure remains abnormally high (a reading of 140/90 mm Hg or greater)
chlorine
a common nonmetallic element belonging to the halogens
sucrose
a complex carbohydrate found in many plants and used as a sweetening agent
inner ear
a complex system of interconnecting cavities
Sea breeze
a cooling breeze from the sea (during the daytime)
anatomy
a detailed analysis
conductor
a device designed to transmit electricity, heat, etc.
simple machine
a device for overcoming resistance at one point by applying force at some other point
meniscus
a disk of cartilage that serves as a cushion between the ends of bones that meet at a point
inertia
a disposition to remain inactive or inert
atmosphere
a distinctive but intangible quality surrounding a person or thing
Storm surge
a dome of water that sweeps across the coast where a hurricane lands
electric current
a flow of electricity through a conductor
Water
a fluid necessary for the life of most animals and plants
liquid
a frictionless non-nasal continuant (especially 'l' and 'r')
anemometer
a gauge for recording the speed and direction of wind
saturn
a giant planet which is surrounded by three planar concentric rings of ice particles
neptune
a giant planet with a ring of ice particles
uranus
a giant planet with a ring of ice particles
carbon dioxide
a heavy odorless colorless gas formed during respiration and by the decomposition of organic substances
tsunami
a huge destructive wave (especially one caused by an earthquake)
forensic science
a kind of science; it is used to catch people who break the law
Ocean
a large body of water constituting a principal part of the hydrosphere
caldera
a large crater caused by the violent explosion of a volcano that collapses into a depression
stratus cloud
a large dark low cloud
Flagellum
a lash-like appendage used for locomotion (e.g., in sperm cells and some bacteria and protozoa)
Concave Lens
a lens such that a parallel beam of light passing through it is caused to diverge or spread out
isogram
a line drawn on a map connecting points having the same numerical value of some variable
isopleth
a line drawn on a map connecting points having the same numerical value of some variable
decibel
a logarithmic unit of sound intensity
delta
a low triangular area where a river divides before entering a larger body of water
computer
a machine for performing calculations automatically
biome
a major biotic community characterized by the dominant forms of plant life and the prevailing climate
topographic map
a map that shows the surface features of an area
ice sheet
a mass of glacier ice that covers surrounding terrain and is greater than 50,000 km² (20,000 mile²).
gamete
a mature sexual reproductive cell having a single set of unpaired chromosomes
titration
a measured amount of a solution of unknown concentration is added to a known volume of a second solution until the reaction between them is just complete
diaphragm
a mechanical device in a camera that controls size of aperture of the lens
Concave Mirror
a mirror with a surface that curves inward
metal
a mixture containing two or more metallic elements or metallic and nonmetallic elements usually fused together or dissolving into each other when molten
colloid
a mixture with properties between those of a solution and fine suspension
drumlin
a mound of glacial drift
cathode
a negatively charged electrode that is the source of electrons in an electrical device
oxygen
a nonmetallic bivalent element that is normally a colorless odorless tasteless nonflammable diatomic gas
Fission
a nuclear reaction in which a massive nucleus splits into smaller nuclei with the simultaneous release of energy
double helix
a pair of parallel helices intertwined about a common axis
fungus
a parasitic plant lacking chlorophyll and leaves and true stems and roots and reproducing by spores
gas
a pedal that controls the throttle valve
capillary action
a phenomenon associated with surface tension and resulting in the elevation or depression of liquids in capillaries
nucleotide
a phosphoric ester of a nucleoside
anode
a positively charged electrode by which electrons leave an electrical device
evolution
a process in which something passes by degrees to a different stage (especially a more advanced or mature stage)
Variable
a quantity that can assume any of a set of values
electron cloud
a region around the nucleus of an atom where electrons are likely to be found
black hole
a region of space resulting from the collapse of a star
transistor
a semiconductor device capable of amplification
equilibrium
a sensory system located in structures of the inner ear that registers the orientation of the head
uranium
a silvery-white metallic chemical element in the actinide series of the periodic table with atomic number 92.
Pulley
a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
pulley
a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope
avalanche
a slide of large masses of snow and ice and mud down a mountain
Incline Plane
a sloping surface, such as a ramp, that reduces the amount of force required to do work
glacier
a slowly moving mass of ice
virus
a software program capable of reproducing itself and usually capable of causing great harm to files or other programs on the same computer
unsaturated solution
a solution that contains less solute than a saturated solution does and that is able to dissolve additional solute
codon
a specific sequence of three adjacent bases on a strand of DNA or RNA that provides genetic code information for a particular amino acid
galaxy
a splendid assemblage (especially of famous people)
Neutron Star
a star that has collapsed under its own gravity
Correlation
a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other
current
a steady flow (usually from natural causes)
solar wind
a stream of protons moving radially from the sun
Superconductor
a substance that undergoes a change at low temperatures that allows it to conduct electricity with zero resistance.
Monosaccharide
a sugar (like sucrose or fructose) that does not hydrolyse to give other sugars
base
a support or foundation
ecosystem
a system formed by the interaction of a community of organisms with their physical environment
Periodic Table
a tabular arrangement of the chemical elements according to atomic number as based on the periodic law
drought
a temporary shortage of rainfall
Hypothesis
a tentative theory about the natural world
hypothesis
a tentative theory about the natural world
chromosome
a threadlike body in the cell nucleus that carries the genes in a linear order
Solid
a three-dimensional shape
iodine
a tincture consisting of a solution of iodine in ethyl alcohol
Torque
a twisting force
astronomical unit
a unit of length used for distances within the solar system
volt
a unit of potential equal to the potential difference between two points on a conductor carrying a current of 1 ampere when the power dissipated between the two points is 1 watt
vector
a variable quantity that can be resolved into components
helium
a very light colorless element that is one of the six inert gasses
Torsional wave
a wave that moves along in a twisting, or spiraling, fashion
epidemic
a widespread outbreak of an infectious disease
osteoporosis
abnormal loss of bony tissue resulting in fragile porous bones attributable to a lack of calcium
oxidize
add oxygen to or combine with oxygen
smog
air pollution by a mixture of smoke and fog
Heart murmur
an abnormal sound of the heart
swine flu
an acute and highly contagious respiratory disease of swine caused by the orthomyxovirus thought to be the same viurs that caused the 1918 influenza pandemic
swine influenza
an acute and highly contagious respiratory disease of swine caused by the orthomyxovirus thought to be the same viurs that caused the 1918 influenza pandemic
dominant allele
an allele whose trait always shows up in the organism when the allele is present
zoonosis
an animal disease that can be transmitted to humans
plague
an annoyance
Pendulum
an apparatus consisting of an object mounted so that it swings freely under the influence of gravity
Constellation
an arrangement of parts or elements
weight
an artifact that is heavy
emulsion
an artifact that is one of the individual parts of which a composite entity is made up
elastic
an elastic fabric made of yarns containing an elastic material
transformer
an electrical device by which alternating current of one voltage is changed to another voltage
capacitor
an electrical device characterized by its capacity to store an electric charge
electrical circuit
an electrical device that provides a path for electrical current to flow
vacuum
an electrical home appliance that cleans by suction
pandemic
an epidemic that is geographically widespread
longitude
an imaginary great circle on the surface of the earth passing through the north and south poles at right angles to the equator
momentum
an impelling force or strength
Global warming
an increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes)
barometer
an instrument that measures atmospheric pressure
Endoplasmic Reticulum
an internal membrane system in which components of cell membrane and some proteins are constructed
isobar
an isogram connecting points having equal barometric pressure at a given time
ribosome
an organelle in the cytoplasm of a living cell
herbivores
an organism that eats only plants.
vertebrate
animals having a bony or cartilaginous skeleton with a segmented spinal column and a large brain enclosed in a skull or cranium
Predator
any animal that lives by preying on other animals
star
any celestial body visible (as a point of light) from the Earth at night
reptile
any cold-blooded vertebrate of the class Reptilia including tortoises turtles snakes lizards alligators crocodiles and extinct forms
Inorganic Compound
any compound that does not contain carbon
fomite
any inanimate object (as a towel or money or clothing or dishes or books or toys etc.) that can transmit infectious agents from one person to another
chlorophyll
any of a group of green pigments found in photosynthetic organisms
Planet
any of the celestial bodies (other than comets or satellites) that revolve around the sun in the solar system
earth science
any of the sciences that deal with the earth or its parts
salamander
any of various typically terrestrial amphibians that resemble lizards and that return to water only to breed
alkali
any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water
Barometric Pressure
atmospheric pressure as indicated by a barometer
magnetism
attraction for iron
DNA Fingerprint
biometric identification obtained by examining a person's unique sequence of DNA base pairs
ornithology
bird study
Ionic bond
bond due to charge differences
sea breeze
breeze over sea
ductile
capable of being shaped or bent or drawn out
malleable
capable of being shaped or bent or drawn out
screw
cause to penetrate, as with a circular motion
resistor
causes resistance
mitosis
cell division in which the nucleus divides into nuclei containing the same number of chromosomes
Eukaryotic Cell
cell with a nucleus (surrounded by its own membrane) and other internal organelles
Doppler Effect
change in the apparent frequency of a wave as observer and source move toward or away from each other
Doppler Shift
change in the apparent frequency of a wave as observer and source move toward or away from each other
physical
characterized by energetic bodily activity
quantitative analysis
chemical analysis to determine the amounts of each element in the substance
binary code
code using a string of 8 binary digits to represent characters
plasma
colorless watery fluid of blood and lymph containing no cells and in which erythrocytes and leukocytes and platelets are suspended
Cloud
contains rain
quartz
crystal
Dissection
cutting so as to separate into pieces
Graph
data plotted
osmosis
diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal
battery acid
dilute sulfuric acid used in storage batteries
reaction
doing something in opposition to another way of doing it that you don't like
class
education imparted in a series of lessons or class meetings
friction
effort expended in rubbing one object against another
ions
electrically charged atoms that have gained or lost electrons.
lightning
electricity from clouds
static electricity
electricity produced by friction
infrared radiation
electromagnetic radiation with wavelengths longer than visible light but shorter than radio waves
cotyledon
embryonic leaf in seed-bearing plants
Conclusion
end of paper
charge
energize a battery by passing a current through it in the direction opposite to discharge
alternative energy
energy derived from sources that do not use up natural resources or harm the environment
Kinetic Energy
energy of motion
erosion
erosion by chemical action
hardness
excessive sternness
radioactive
exhibiting or caused by radioactivity
hemorrhage
flow of blood from a ruptured blood vessels
taste bud
for tasting
force
force into or from an action or state, either physically or metaphorically
ester
formed by reaction between an acid and an alcohol with elimination of water
petrified wood
fossils formed when once-living parts are filled in by minerals
paleozoic
from 544 million to about 230 million years ago
Fossil Fuel
fuel consisting of the remains of organisms preserved in rocks in the earth's crust with high carbon and hydrogen content
windmill
generates energy from wind
dynamo
generator consisting of a coil (the armature) that rotates between the poles of an electromagnet (the field magnet) causing a current to flow in the armature
solar power
gets energy from sun
Test Tube
glass tube closed at one end
halogen
group 17
noble gas
group 18
noble gases
group 18
Acid
h+ ions free
heat of vaporization
heat absorbed by a unit mass of a material at its boiling point in order to convert the material into a gas at the same temperature
heat of fusion
heat absorbed by a unit mass of a solid at its melting point in order to convert the solid into a liquid at the same temperature
Sun
hot!
vaccine
immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies
Data
information
invertebrate
lacking a backbone or spinal column
Batholith
large mass of intrusive igneous rock believed to have solidified deep within the earth
batholith
large mass of intrusive igneous rock believed to have solidified deep within the earth
glacier
large moving ice mass
life
living things collectively
microscope
magnifies tiny things.
marsupial
mammals of which the females have a pouch (the marsupium) containing the teats where the young are fed and carried
chlorofluorocarbons
man-made chemical substance that depletes the ozone layer
pipette
measuring instrument consisting of a graduated glass tube used to measure or transfer precise volumes of a liquid by drawing the liquid up into the tube
thermometer
measuring instrument for measuring temperature
homeostasis
metabolic equilibrium actively maintained by several complex biological mechanisms that operate via the autonomic nervous system to offset disrupting changes
fungi
mushroom mushroom
electrons
negatively charged particles
ideal spring
obey's hooke's law because it experiences no internal or external friction
cross contamination
occurs when microorganisms are transferred from one surface or food to another
vertebra
one of the bony segments of the spinal column
Allele
one of two alternate forms of a gene that can have the same locus on homologous chromosomes and are responsible for alternative traits
chromatid
one of two identical strands into which a chromosome splits during mitosis
reduction
opposite of oxidation
hydrocarbons
organic molecules that are composed of only carbon and hydrogen
bone
part of skeleton
ice pellet
pellet of ice
volume
physical objects consisting of a number of pages bound together
bottle neck
population greatly reduced, individuals that remain determine genetics of "new" population
Hypothesis
prediction
Sponge
primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework
gel electrophoresis
procedure used to separate and analyze DNA fragments by placing a mixture of DNA fragments at one end of a porous gel and applying an electrical voltage to the gel
Monera
prokaryotic bacteria and blue-green algae and various primitive pathogens
herniated disk
protrusion of a degenerated or fragmented intervertebral disk so that the nucleus pulposus protrudes, causing compression on the nerve root
ideal gas law
pv=nrt
Monsoon
rainy season in southern Asia when the southwestern monsoon blows, bringing heavy rains
communicable
readily communicated
induction
reasoning from detailed facts to general principles
electrolysis
removing superfluous or unwanted hair by passing an electric current through the hair root
morraine
rocks that form a ridge or hill when a glacier melts or recedes
turbine
rotary engine in which the kinetic energy of a moving fluid is converted into mechanical energy by causing a bladed rotor to rotate
Earth
round
Rock Cycle
sequence of events in which rocks are formed, destroyed, altered, and reformed by geological processes
earthquake
shaking and vibration at the surface of the earth resulting from underground movement along a fault plane of from volcanic activity
Pulley
simple machine changes direction of force
micropipette
small glass tubule used to get a small volume of capillary blood
tooth decay
soft decayed area in a tooth
mineral
solid homogeneous inorganic substances occurring in nature having a definite chemical composition
accretion
something contributing to growth or increase
granite
something having the quality of granite (unyielding firmness)
Plant
something planted secretly for discovery by another
catalyst
something that causes an important event to happen
Acid
street name for lysergic acid diethylamide
glucose
sugar
fructose
sugar of fruit
Photosynthesis
synthesis of compounds with the aid of radiant energy (especially in plants)
brain
that part of the central nervous system that includes all the higher nervous centers
mars
the 4th planet from the sun
buoyancy
the ability to float
Earth
the abode of mortals (as contrasted with heaven or hell)
adsorption
the accumulation of molecules of a gas to form a thin film on the surface of a solid
acceleration
the act of accelerating
combustion
the act of burning something
diffusion
the act of dispersing or diffusing something
dispersion
the act of dispersing or diffusing something
fusion
the act of fusing (or melting) together
Condensation
the act of increasing the density of something
conclusion
the act of making up your mind about something
resistance
the action of opposing something that you disapprove or disagree with
refraction
the amount by which a propagating wave is bent
density
the amount per unit size
environment
the area in which something exists or lives
stratosphere
the atmospheric layer between the troposphere and the mesosphere
northern lights
the aurora of the northern hemisphere
Genes
the biochemical units of heredity that make up the chromosomes; a segment of DNA capable of synthesizing a protein
ecology
the branch of biology concerned with the relations between organisms and their environment
artificial intelligence
the branch of computer science that deal with writing computer programs that can solve problems creatively
plate tectonics
the branch of geology studying the folding and faulting of the earth's crust
hydrology
the branch of geology that studies water on the earth and in the atmosphere: its distribution and uses and conservation
thermodynamics
the branch of physics concerned with the conversion of different forms of energy
oceanography
the branch of science dealing with physical and biological aspects of the oceans
photochemical smog
the brown haze that develops in sunny cities. it is formed by the action of sunlight on pollutants such as hydrocarbons and nurtogen oxides. these chemicals react to form a brownish muzture of ozone and other pollutants.
angular displacement
the change in an angle as an object rotates
glaciation
the condition of being covered with glaciers or masses of ice
water cycle
the continuous process by which water moves from Earth's surface to the atmosphere and back
Temperature
the degree of hotness or coldness of a body or environment (corresponding to its molecular activity)
potential
the difference in electrical charge between two points in a circuit expressed in volts
voltage
the difference in electrical charge between two points in a circuit expressed in volts
wavelength
the distance (measured in the direction of propagation) between two points in the same phase in consecutive cycles of a wave
hooke's law
the distance of stretch or squeeze of an elastic material is directly proportional to the applied force
meteorology
the earth science dealing with phenomena of the atmosphere (especially weather)
Transpiration
the emission of water vapor from the leaves of plants
exoskeleton
the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs
sternum
the flat bone that articulates with the clavicles and the first seven pairs of ribs
pressure
the force applied to a unit area of surface
Protein Synthesis
the formation of proteins by using information contained in DNA and carried by mRNA
cold front
the front of an advancing mass of colder air
continental drift
the gradual movement and formation of continents (as described by plate tectonics)
tibia
the inner and thicker of the two bones of the human leg between the knee and ankle
aorta
the large trunk artery that carries blood from the left ventricle of the heart to branch arteries
jupiter
the largest planet and the 5th from the sun
Femur
the longest and thickest bone of the human skeleton
femur
the longest and thickest bone of the human skeleton
potential energy
the mechanical energy that a body has by virtue of its position
Mole
the molecular weight of a substance expressed in grams
solar eclipse
the moon interrupts light from the sun
Convergence
the occurrence of two or more things coming together
fibula
the outer and thinner of the two bones of the human leg between the knee and ankle
Polarization
the phenomenon in which waves of light or other radiation are restricted in direction of vibration
fulcrum
the pivot about which a lever turns
vapor pressure
the pressure exerted by a vapor
air pressure
the pressure exerted by the atmosphere
evaporation
the process of extracting moisture
Oxidation
the process of oxidizing
Angular Momentum
the product of the momentum of a rotating body and its distance from the axis of rotation
resonance
the quality imparted to voiced speech sounds by the action of the resonating chambers of the throat and mouth and nasal cavities
relative density
the ratio of the density of something to the density of a standard
Asteroid Belt
the region of interplanetary space between Mars and Jupiter where most asteroids are found
Asteroid belt
the region of interplanetary space between Mars and Jupiter where most asteroids are found
symbiosis
the relation between two different species of organisms that are interdependent
salinity
the relative proportion of salt in a solution
integral
the result of a mathematical integration
derivative
the result of mathematical differentiation
chemistry
the science of matter
physics
the science of matter and energy and their interactions
biology
the science that studies living organisms
marine biology
the scientific study of the organisms that live in the ocean
venus
the second nearest planet to the sun
pluto
the second smallest planet and the farthest known from the sun
Metaphase
the second stage of mitosis
spinal column
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
mercury
the smallest planet and the nearest to the sun
atoms
the smallest unit of matter that has the characteristics of an element; consists of three main types of subatomic particles: protons neutrons and electrons.
ocean current
the steady flow of surface ocean water in a prevailing direction
concentration
the strength of a solution
environmental chemistry
the study of the sources, reactions, transport, effects, and fates of chemical species in water, soil, and air environments, and the effects of technology thereon
helioseismology
the study of vibrations of the solar surface
volcanic eruption
the sudden occurrence of a violent discharge of steam and volcanic material
digestive system
the system that makes food absorbable into the body
freezing point
the temperature below which a liquid turns into a solid
elasticity
the tendency of a body to return to its original shape after it has been stretched or compressed
new moon
the time at which the moon appears as a narrow waxing crescent
Half-Life
the time required for one half of the atoms of a radioisotope to emit radiation an decay products
Crust
the trait of being rude and impertinent
convection
the transfer of heat through a fluid (liquid or gas) caused by molecular motion
conduction
the transmission of heat or electricity or sound
habitat
the type of environment in which an organism or group normally lives or occurs
climate
the weather in some location averaged over some long period of time
xylem
the woody part of plants: the supporting and water-conducting tissue, consisting primarily of tracheids and vessels
platelet
tiny bits of protoplasm found in vertebrate blood
absolute pressure
total pressure
calorie
unit of heat defined as the quantity of heat required to raise the temperature of 1 gram of water by 1 degree centigrade at atmospheric pressure
pinwheel escapement
used in clock to control energy loss
equation of state
volume of gas depends on pressure and temp, V, T, m, P
Greenhouse Effect
warming that results when solar radiation is trapped by the atmosphere
humidity
wetness in the atmosphere
diffraction
when light passes sharp edges or goes through narrow slits the rays are deflected and produce fringes of light and dark bands
cathode ray tube
A Piece of Equipment used by Thomson to discover the electron.
secondary battery
A battery taht can be recharged by reversing the flow of current, which reverses the current-producing reactions and regenerates the reactants
deciduous forest
A biome with four seasons, plants shed leaves in the fall and grow new ones in the spring.
parallel plate capacitor
A capacitor or condenser is a passive electronic component consisting of a pair of conductors separated by a dielectric (insulator). When a potential difference (voltage) exists across the conductors, an electric field is present in the dielectric.
element
A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.
conservative force
A force, such as gravity, that performs work over a distance that is independent of the path taken.
geothermal power
A form of power obtained from steam or hot water coming from within the earth's interior
gene
A gene is the basic unit of heredity in a living organism.
fujita scale
A scale that tells how severe a tornado is based on wind speed and the damage being caused.
scanning electron microscope
An electron microscope used to study the fine details of cell surfaces
alkaline earth metal
An element in group 2 of the periodic table
smooth endoplasmic reticulum
An endomembrane system where lipids are synthesized, calcium levels are regulated, and toxic substances are broken down.
Class one lever
Best of all levers
DNA recombination
DNA recombination refers to the process that a DNA segment moves from one DNA molecule to another DNA molecule.
Coulomb's Law
F=kQQ/r²
coanda effect
Fluids follow the surface over which it it moving
bernoulli effect
Helps with last amount of air to end closure. Has minor effect on air flow & vocal fold vibration.
cosmic rays
High-speed charged particles flying through space.
meiosis
In biology, meiosis is a process of reductional division in which the number of chromosomes per cell is cut in half.
cholera
John Snow's disease
Solubility Coefficient
Measurement of how easily gases dissolve in solutions; higher partial pressure and greater SC - will dissolve if numbers are high
Gene Recombination
New comination of genes produced by crossing over and independent assortment.
volatile organic compounds
Organic chemicals that evaporate readily and exist as gases in the air
outbreak
Outbreak is a term used in epidemiology to describe an occurrence of disease greater than would otherwise be expected in a particular time and place.
protons
Positively charged particles
black body radiation
Radiation emitted by a heated object
specific gravity
Relative density, or specific gravity, is the ratio of the density (mass of a unit volume) of a substance to the density of a given reference material. Specific gravity usually means relative density with respect to water. The term "relative density" is often preferred in modern scientific usage.
sedimentary rocks
Rocks formed from the weathering, erosion, depostion, and compaction of other rocks
Hibernation
SLEEP
acid anhydride
Substance that combines with water to form an acid (oxides of nonmentals are generally this)
evapotranspiration
The evaporation of water from soil plus the transpiration of water from plants.
gravitational pull
The force of gravity between two objects like the Earth and the Sun and the Earth and the moon.
Celsius
The metric unit of temperature measurement.
taiga
The northernmost edge of the boreal forest, including species-poor woodland and peat deposits; intergrading with the arctic tundra
subduction zone
The region where oceanic plates sink down into the asthenosphere.
Retrograde rotation
The spinning motion of a planet from east to west, opposite the direction of rotation of most planets and moons