Studied by 15 people
acceleration
Change in velocity divided by the time it takes for the change to occur
acceleration due to gravity
9.8 meters per second squared
accuracy
A description of how close a measurement is to the true value of the quantity measured.
acid
A substance that increases the hydrogen ion concentration of a solution.
analysis
A detailed examination of the elements or structure of something.
aqueous solution
a solution in which water is the solvent
arteries
Blood vessels that carry blood away from the heart
astronomy
The study of the moon, stars, and other objects in space
atom
Basic unit of matter
atp
(adenosine triphosphate) main energy source that cells use for most of their work
atria
2 upper chambers of the heart
base
A substance that decreases the hydrogen ion concentration in a solution.
calibration
Any procedure used to evaluate the accuracy of a measurement system and, when sources of error are found, to use that information to correct or improve the measuring system
capillaries
Microscopic vessel through which exchanges take place between the blood and cells of the body
catalyst
SOMETHING CAUSING CHANGE
celestial equator
An imaginary circle created by extending Earth's equator into space
celestial poles
Projection of Earth's North and South Poles onto the celestial sphere. Creates North and South celestial pole.
celestial sphere
An imaginary sphere surrounding Earth to which the stars are attached
cell membrane
A cell structure that controls which substances can enter or leave the cell.
cell wall
A rigid layer of nonliving material that surrounds the cells of plants and some other organisms.
centripetal force
An attitude that tends to unify people and enhance support for a state
chemical change
A change in matter that produces one or more new substances
chromosome
A threadlike, gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins.
component
A part or element of a larger whole.
compound
A substance made up of atoms of two or more different elements joined by chemical bonds
concentration
A measurement of how much solute exists within a certain volume of solvent
conclusion
A _____ at the end of a DBQ essay is not required for points but it can be used to help reiterate your thesis or perhaps to get certain expanded core points.
constellation
A group of stars that form a pattern in the sky
continental rift
A linear belt along which continental lithosphere stretches and pulls apart
convergent boundary
A plate boundary where two plates move toward each other.
cosmology
STUDY OF THE UNIVERSE AS A TOTALITY;THEORY OF THE ORIGIN AND STRUCTURE OF THE UNIVERSE
crystal
An orderly, three-dimensional pattern of ions or atoms in a solid
current
A flow of electric charge.
cuticle
A waxy covering on the surface of stems and leaves that acts as an adaptation to prevent desiccation in terrestrial plants.
cytoplasm
A jellylike fluid inside the cell in which the organelles are suspended
cytoskeleton
A network of fibers that holds the cell together, helps the cell to keep its shape, and aids in movement
decibel
a logarithmic unit of sound intensity
declination
A measure of how far north or south an object is from the celestial equator
delta
A landform made of sediment that is deposited where a river flows into an ocean or lake
density
Mass / Volume
displacement
Distance and direction of an object's change in position from the starting point.
divergent boundary
A plate boundary where two plates move away from each other.
dna
A complex molecule containing the genetic information that makes up the chromosomes.
ecliptic
path of the sun and the planets
electric potential energy
Energy a charge has due to its location in an electric field
electromagnetic wave
A form of energy that can move through the vacuum of space.
electrostatic force
The force between electrically charged objects (like charges repel and opposite charges attract each other).
element
A pure substance made of only one kind of atom
ellipse
A regular oval shape, traced by a point moving in a plane so that the sum of its distances from two other points is constant, or resulting when a cone is cut by an oblique plane which does not intersect the base.
endoplasmic reticulum
A cell structure that forms a maze of passageways in which proteins and other materials are carried from one part of the cell to another.
energy
Ability to do work
epicycle
n. A circle that rolls upon the external or internal circumference of another circle.
equilibrium
A state of balance
focus length
The distance from the lens to the point where the refracted light rays converge at the focal point
force
A push or a pull
freefall
When the only force acting on an object is gravity
frequency
How many wave peaks pass a certain point per given time
frictional force
The force that acts parallel to surfaces in contact opposite the direction of motion or tendency of motion.
functional group
A specific configuration of atoms commonly attached to the carbon skeletons of organic molecules and involved in chemical reactions.
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
geocentric model
A representation of the universe in which starts and planets revolve around Earth. Ptolemy proposed the model.
geology
science dealing with the earth's history as recorded in rocks
glacier
A large mass of moving ice and snow on land
golgi apparatus
A system of membranes that modifies and packages proteins for export by the cell
gravitational force
an attractive force that acts between any two objects
heliocentric model
A representation of the relationship between the Sun and planets in which the planets revolve around the Sun. Copernicus proposed the model.
heterogeneous
(adj.) composed of different kinds, diverse
homogeneous
of a similar kind
hydrate
A compound that has a specific number of water molecules bound to its atoms
hydrology
Study of water
hypothesis
A testable prediction, often implied by a theory
igneous rock
a type of rock that forms from the cooling of molten rock at or below the surface
image distance
The distance from the mirror to the image
inertia
(physics) the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force
inorganic
Not formed from living things or the remains of living things
intensity
The brightness of a light.
ion
A charged atom
isomers
Same atoms but different arrangement.
isotopes
Atoms of the same element that have different numbers of neutrons.
jovian planet
Jupiter, Saturn, Uranus, Neptune
kinetic energy
Energy of motion
land breeze
the flow of air from land to a body of water
latitude
Distance north or south of the equator
longitude
Distance east or west of the prime meridian, measured in degrees
longitudinal wave
A wave in which the vibration of the medium is parallel to the direction the wave travels
mass
A measure of the amount of matter in an object
meander
to wander aimlessly
meiosis
Cell division that produces reproductive cells in sexually reproducing organisms
meniscus
The curved upper surface of a liquid column that is concave when the containing walls are wetted by the liquid and convex when not.
metamorphic rock
A type of rock that forms from an existing rock that is changed by heat, pressure, or chemical reactions.
meteorology
the study of weather
mid-oceanic ridge
The longest mountain range in the world; all along the center of the Atlantic Ocean; formed by active volcanoes through sea floor spreading
mineral
Elements found in food that are used by the body
mitochondria
An organelle found in large numbers in most cells, in which the biochemical processes of respiration and energy production occur.
mitosis
A process of nuclear division in eukaryotic cells conventionally divided into five stages: prophase, prometaphase, metaphase, anaphase, and telophase. Mitosis conserves chromosome number by equally allocating replicated chromosomes to each of the daughter nuclei.
mixture
A combination of two or more substances that are not chemically combined
mole
6.022 x 10²³ particles of an element
molecular mass
The sum of the masses of all the atoms in a molecule
molecule
A group of atoms bonded together
net force
The combination of all forces acting on an object
