Studied by 1 person
A part 2 of the vocab study guide for the Science Standard Assessment (SSA).
acceleration
the rate at which velocity is changing
allele
any or two or more alternate forms of a gene that an organism may have for a particular trait
Astronomical Unit (AU)
unit used to measure the distance in the Solar System, equals the distance from the Earth to the Sun
Autotroph
an organism that can produce its own food
boiling point
the temperature that a liquid turns into a gas
chemical properties
characteristics of substances that describes their composition, reactivity, and how the substance changes into different substances
controlled variable
a factor in a scientific experiment that is purposefully kept the same
dominant allele
the form of a trait that is expressed or shown when the combination is heterozgous
dwarf planet
a celestial body similar to a planet but orbiting in a zone that has many other objects
eukaryote
an organism whose cells contain a nucleus surrounded by a membrane
evolution
cumulative change in a population over time from generation to generation
fault
a crack in the Earth along which movement has occurred
fold
a bend in a layer or several layers of rock
heterogeneous
a type of mixture in which different parts can be easily distinguished
heterotroph
an organism that cannot produce its own food
heterozgous
a cell or organism that has two different alleles for a particular trait
homeostasis
the tendancy of a cell to remain the same
homogeneous
a type of mixture in which different parts are blended evenly so that the mixture is the same throughout
hypothesis
a state that can be tested through experiments
Law
a principle based on many observations of naturally occurring events
Light-year
the distance a ray of light travels in one year
melting point
the temperature that a solid changes to a liquid
molecule
the smallest unit of matter
nebula
a large cloudlike mass of gas and dust in space that may lead to the formation of a star
net force
the sum of all forces acting on an object
niche
the unique position occupied by a particular species in an ecosystem
nucleus
the center of an atom or cell
pH
measure of the amount of acidity in a substance
base
#8-14 on the pH scale
acid
#1-7 on the pH scale
recessive
the form of a trait that is masked unless the organism is homogeous for that trait
repetition
making multiple sets of measurements in an experiment
replication
the reproduction of a scientific investigation by another person to ensure accuracy
solute
a substance that is being dissolved by another substance
solvent
a substance that dissolves another substance
saturation
a condition of a solution that has the maximum amount of solute
temperature
the measure of average kinetic energy of the particles of a substance
test variable (indepenent)
variable manipulated by the experiment in order to study change in outcome variable
theory
an observation made after extensive testing
weathering
rocks and other surfaces are broken down
density
mass divided by volume
sinks
density greater than 1
floats
density less than 1
mass
stays the same not matter the location
weight
changes depending on the mass of the planet
consumer
eats other living things for energy
producer
creates its own energy through photosynthesis
predator
hunts prey
mutualistic relationship
both living things benefit
commensalism
one living thing benifits one is not affected
parasite
one living thing benifits one is harmed
Note 
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