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Science Terms

Terms

undefined, object
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inorganic forms of compounds
compounds that cannot be used on earth
brownian motion
the measure of how much molecules move
Abiotic factors
the nonliving components of an ecosystem
to control
creating only one independent variable in order to minimize the risk of experimental error
atom
the smallest particles of matter
independent variable
The variable that is manipulated during an experiment and is controlled by the experimenter
matter
what everything is made out of
mitochondria
place in the cell where cellular respiration takes place
absolute zero
the coldest temperature their can be, zero kelvin, contains no brownian motion
mixture
when you have two things together that are not chemically combined
conductors
substances that transfer heat energy easily
coefficient
the number in front of the chemical compound; does not have to be there
physical change
the state of matter changes but the chemical structure does not
the atomic number
the number of protons in the cell
lab report
process to document scientific method which can be shared or replicated to otheres
greenhouse gasses
gasses that contribute to the greenhouse effect; absorb and radiate heat
omnivore
an organism that eats both plants and meat
law of conservation of matter
the idea that matter is neither created nor destroyed in only changes form
herbivore
an organism that eats only plants
II. materials
the part in the lab report that contains the items necessary to complete the experiment and safety concerns and precautions; is in a bulleted list of column form
trophic level
each step in the transfer of energy in an ecosystem
evaporation
when water turns into a gas once it has been heated and rises from the earth into clouds
Dependent variable
the variable that changes in response to the independent variable and that is measured by the experimenter(results of the experiment)
element
a material consisting of only one type of atom
scientific method
thinking process that scientist use to solve problems or answer questions
food chain
a sequence in which energy is transfered from one organism to another
periodic table
the table of elements
atomic theory of matter
1) all elements of made up of atoms which are "indivisible" particles 2) atoms that are made up of the same element are exactly alike 3) atoms of different elements have different properties 4) atoms are not changed by chemical reactions 5) compound are formed when elements combine 6) compounds are defined by the number, type, and proportion of atoms
transpiration
the evaporation of water from plants
ultraviolet radiation
harmful radiation that is absorbed/deflected by the ozone layer
data table
raw data that is organized in a table
stratopause
the transition between the stratosphere and the mesosphere
ions
atoms with a charge either positive of negative
chemical change
the chemical structure changes from the reaction to the product
conduction
the transfer of energy between the particles of matter (typically a solid)
tropopause
the transition between the troposphere and the stratosphere
stratospheric ozone
good ozone that keeps out ultraviolet radiation
habitat
the physical environment in which and organism lives
atomic mass
the number of protons and neutron in the cell combined
protons
a subatomic particle with a positive charge
ductile
can be pulled into a wire
groups
columns (I-VII) on the periodic table
V. analysis
the part of the lab report that contains a graph of the data and can include a full sentences in paragraph form
nonmetals
an element that is brittle and does not conduct electricity well
III. procedure
the part the the lab report that contains a detailed list of the procedure; it identifies the groups (experimental and control) and variables (independent and dependent variable); formatted in numbered sentences
metals
an element that is ductile, malleable, and conducts electricity well
nucleus
where the protons and neutrons are found in an atom
subscript
the number of atoms of one element
variable
something that changes
3rd law of thermodynamics
zero kelvin=absolute zero=no brownian motion
qualitative
word descriptions
ozone layer
90% of ozone that is found in the stratosphere
carbon cycle
the continuous cycle of the transfer of carbon through the atmosphere
atmosphere
the layer of air and gasses that surround the earth
food pyramid-10% rule
in a food pyramid only 10% of the energy is transfered from one level to the next
temperature
the measure of heat
celsius/fahrenheit/kelvin
different ways of measuring temperature
thermosphere
the layer of the atmosphere that contains single atoms, space shuttles that orbit; temperature increases as you go up
product
the chemical compounds on the right of an arrow pointing right
precipitation
rain, snow, sleet or hail that falls back to earth after it has gotten heavy enough in its condensed form that gravity pulls it back to earth
metalloids
an element that has some properties of metals and some of nonmetals; a hybrid
hypothesis
the making of an educated prediction that solves a problem or answers a question
heat
the total energy of the random movement of molecules of a substance/object
observation
the process of observing the experiment; gaining background knowledge on the topic of an experiment in order to identify a problem of question
nitrogen cycle
the continuous cycle of the transfer of nitrogen through the atmosphere
title
the part in a lab report that names the topic in a descriptive and specific way; it is centered on the top of the page
Control group
group with out treatment; original group; the group all other things are compared to
smog
ground level ozone
ozone hole
a very thin section in the ozone layer over Antarctica where UV rays can get through and cause damage to human heath and vegitation
carnivore
an organism that eats only meat
mesosphere
the layer of the atmosphere that contains shooting stars and meteors; the temperature decreases as you go up
exosphere
there the atmosphere turns into space; temperature decreases as you go up
stratosphere
the layer of the atmosphere that contains the ozone layer; temperature increases as you go up
organic forms of compounds
compounds that can be used on earth
insulators
substances that do not easily transfer heat energy
experiment
the test of a hypothesis and the collection of data
chlorofluorocarbons
man-made chemical substance that depletes the ozone layer
compound
two or more atoms that are chemically combined
1st law of thermodynamics
energy is conserved
reactant
the chemical compounds on the left of an arrow pointing right
consumer
an organism that gets its energy by eating other animals
sustainable
able to survive on its own
Human error
a mistake a human made while following the procedure
Montreal protocol
an agreement that says countries will not produce CFC's
six months old
how old your current event for science can be
chemical symbol
a symbol for an element on the periodic table
Error
problem with an experiment
environmental issues
global warming, deforestation, urbanization, burning of fossil fuels, pollution, emissions, animal extinction
Ecosystem
all the different biotic and abiotic factors in a certain area, along with the physical enviorment
quantitative
numeral descriptions
mesopause
the transition between the mesosphere and the thermosphere
radiation
the travel of energy in waves or rays
water cycle
the continuous cycle of the transfer of water through an ecosystem, which involves evaporation, transpiration, condensation, and precipitation
periods
rows (1-7) on the periodic table
convection
the transfer of energy in a gas or liquid by means of the currents within
Deductive reasoning
taking a lot of information and creating on idea
cellular respiration
the process of breaking down food to yield energy
Niche
the animals relationship and interaction within its environment
cloud seeding
man-made precipitation that occurs when humans fill clouds with iodine particles
particulate matter
pieces of "stuff" in the atmosphere
states of matter
solid, liquid, gas, plasma
malleable
can be flattened
brittle
breakable, shatters
IV. data
the part in the lab report that contains the raw data collected in a table
aquifer
an underground place where water is stored
troposphere
the layer of the atmosphere that contains life and weather; the temperature decreases as you go up
ozone event
when tropospheric ozone makes it unhealthy (in varying degrees) to go outside
I. introduction
the part in a lab report that contains the background information, purpose of the experiment, and hypothesis to be tested; it is in full sentences and paragraph form
electron
a subatomic particle with a negative charge
chloroplast
place in the cell where photosynthesis takes place
IV. Conclusion
the section is a lab report where you determine if your hypothesis is supported by the data
experimental group
group with treatment; testing to independent variable or hypothesis
photosynthesis
the process of converting sunlight to energy by absorbing sunlight that triggers a chemical reactions which uses the sunlight along with water and carbon dioxide to create sugar
neutrons
a subatomic particle with a neutral charge
experimental error
a flaw in the design of the procedure
producer
an organism that makes its own food
inductive reasoning
taking an idea and applying it to other situations
why hot air rises
because it is less dense then cold air
Biotic factors
the living components of an ecosystem
tropospheric ozone
ozone that s hazardous to human heath and vegetation; 10% of ozone

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