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Reading Vocabulary
Words in test questions
51
Science
8th Grade
04/19/2011

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Term
competition - WHEN TALKING ABOUT DIFFERENT ANIMALS AND PLANT LIFE ON EARTH OR IN A FOOD WEB
Definition
fighting for survival FOR FOOD, WATER, A PLACE TO LIVE
Term
decomposition
Definition
breaking down of living matter into the parts that make it up, for example, its elements and compounds
Term
ecosystem
Definition
a area of the earth that includes all the living plants and animals and earth formations that interact together to survive
Term
extinct
Definition
a plant or animal that no longer lives on earth; all of its kind have died out
Term
endocrine system
Definition
the parts of the body that control making and spreading hormones, like adrenaline, these hormones then each cause some part of the body to react like it is suppose to in order to help the body
Term
fossil fuels
Definition
sources in the earth that we use as energy sources -- they all are the remains of either plants or tiny animals that were decomposed and pressed together by heat and pressure over long periods of time EXAMPLES ARE: COAL, PETROLEUM (CRUDE OIL), AND GAS (NOT CAR GASOLINE)
Term
C6H12O6
(all the numbers, 6, 12, and 6 should be subscripts)
Definition
the chemical formula for glucose or simple sugar that is made by plants and used by animals
Term
producers
Definition
when talking about the food web they are the plants that make their own food using photosynthesis
Term
predator
predation
Definition
animal that hunts and feeds on another
tion - the process of being a predator
Term
primary succession
Definition
the process in the food web where you move from producer to primary consumer to secondary consumer -through the food chain
Term
Punnett Square
Definition
a chart with each column and row title labeled with a capital or small letter representing a gene for a trait that could be passed on to an offspring (child) the column titles would be the genes from one parent and and row titles from the other parent by matching where the column and row intersect within each square the odds of which traits may be passed on to offspring can be predicted
Term
respiratory system
Definition
the body system that includes all organs that are involved in the taking in of oxygen in the body and the giving off of carbon dioxide--Like the lungs, diaphragm,and more
Term
root nodules
Definition
knots that form on the roots that contain "nitrogen fixing" bacteria --the help turn nitrogen gas into a usable form of nitrogen compound called ammonia --legumes are plants that usually have these nodules
EXAMPLES OF LEGUME PLANTS ARE PEANUTS, SOYBEANS,AND OTHERS
Term
RED BLOOD CELLS
Definition
the cells our blood that carry oxygen to every cell in our body -- the chemical HEMOGLOBIN in these cells hooks up with the oxygen from your lungs
Term
SEED DISTRIBUTION
Definition
how a plant using the wind, rain, or animals is able to spread its seeds to other parts of its environment
Term
SEED FOSSILIZATION
Definition
the process where minerals over time have replaced the chemicals in a seed and turned it into rock
Term
TRAITS
Definition
characteristics that an organism inherits from its parents, some you can see like hair color, eye color, but others that you can't see
Term
DENSITY
Definition
how packed together the atoms or chemicals that make up and object are--it is a characteristic of each type of material determined by the kinds of atoms it is made up of-- IT IS A MEASURABLE THING BY MEASURING THE OBJECTS MASS AND ITS VOLUME AND THEN USING THE FORMULA: ITS MASS DIVIDED BY ITS VOLUME
Term
DISSOLOVING
Definition
the process of where a solid chemical, like sugar, can be completely spread out in between the molecules of another chemical, like water --THIS IS NOT A CHEMICAL CHANGE OR REACTION --This is a PHYSICAL CHANGE OR REACTION -(this means that by boiling off the water you could get back the sugar -- THE WATER (H20) OR THE SUGAR (C6H12022) WILL NOT CHANGE THERE FORMULA --THE CHEMICALS REMAIN THE SAME WHEN THE SUGAR IS DISSOLVED IN THE WATER
Term
EVAPORATION
Definition
when any liquid chemical is heated and goes into its gaseous form -- like liquid water turning into steam --LIQUID WATER IS H20 AND SO IS STEAM WATER H20
Term
ELEMENT
Definition
a chemical that is made up of only 1 kind of atom (as in each of the symbols on the Periodic Table)
Term
MASS
Definition
a measurement of how much matter (the number of atoms and which kind of atoms mke up that matter -- MASS OF AN OBJECT IS MEASURED BY USING ONE OF THESE KINDS OF BALANCES (LIKE A TRIPLE BEAM BALANCE, OR A DOUBLE BEAM BALANCE, OR A DOUBLE PAN BALANCE, OR AN ELECTRONIC BALANCE) the units mass is measured in are milligrams (mg) grams(g) kilograms (Kg)
Term
METALS
Definition
when talking about the Periodic Table it is all the elements on the left side of the stair-step divider on the P.T. IT DOES INCLUDE COMMON METALS LIKE IRON, ALUMINUM, COPPER, GOLD, AND NICKEL, BUT ALSO ELEMENTS THAT WE DON'T USUALLY SEE AS ELEMENTS OR DON'T THINK OF THEM AS METAL
Term
SOLUTION
Definition
A MIXTURE OF TWO OR MORE ELEMENTS AND/OR COMPOUNDS WHERE THEY DON'T COMBINE CHEMICALLY BUT ARE EVENLY MIXED
Term
SATURATED SOLUTION
Definition
a mixture of two chemicals when it is so full of the chemical being dissolved that it cannot hold any more of that chemical LIKE WHEN YOU DISSOLVE ALL THE SUGAR YOU CAN IN A TEA GLASS AND IF YOU TRY TO ADD MORE WHAT YOU ADD WILL JUST FALL TO THE BOTTOM OF THE GLASS EACH TIME
Term
ABSORPTION
Definition
WHEN SOMETHING SUCKS IN ANOTHER THING AND HOLDS ON TO IT AND WON'T LET IT OUT
(like when a black object sucks in all the sunlight and won't reflect any light back)
Term
CONDUCTOR
Definition
a substance that can carry either heat or light or electricity through it
an example would be metals that carry heat or electricity or fiber optic threads that carry light
Term
energy transformation
Definition
energy that is changed from one form of energy to another (like potential energy to kinetic energy) OR (electrical energy into light energy in s lsmp)
Term
GRAVITATIONAL POTENTIAL ENERGY
Definition
stored energy that is related to how high an object is above the surface of the earth -- hence the more time as it falls gravity would have longer to act on it
Term
LOAD
Definition
in physics when moving something the weight of the object is the load
Term
REFLECTION
Definition
the process by which something is bounced back of another object. FOR EXAMPLE; THE WAY LIGHT IS REFLECTED OFF OF A MIRROR -- IT IS NOT ABSORBED
Term
REFRACTION
Definition
the process of when an object passes through another object and its pathway is bent or altered as it passes through--FOR EXAMPLE; WHEN LIGHT GOES THROUGH A PIECE OF CLEAR GLASS IT IS BENT -- THAT IS WHY IF YOU PUT YOUR HAND INTO AN AQUARIUM TO PICK UP AND OBJECT YOU MIGHT MISS IT THE FIRST TIME BECAUSE IT LOOKS (due to the "refracted light waves" seen through the glasslike it is in one spot when it really is a little bit over from where you "see" it
Term
SOUND ENERGY
Definition
energy caused by the compressing and releasing of air molecules
Term
THERMAL ENERGY
Definition
same thing as heat energy which is energy due to the movement of atoms or molecules -- THE FASTER THEY MOVE -- THE MORE HEAT ENERHY--THE HIGHER THE TEMPERATURE OF A SUBSTANCE --the slower they move the less heat energy --the lower the temperature of that substance
Term
SCALE - HAVING TO DO WITH MAPS OR CHARTS
Definition
a mathematical relationship between objects size on paper and its real size fOR EXAMPLE; IF THE SCALE IS 1:10 AN OBJECT ON THE MAP MAY BE 1 INCH LONG BUT IF REAL LIFE IT WOULD BE 10 INCHES LONG
Term
solar energy
Definition
energy from the sun
Term
SPECIFIC HEAT
Definition
a measurement of how slowly a material loses or gains heat energy -- IT IS A NUMBER BASED ON HOW THAT MATERIALS COMPARES TO THE WAY WATER LOSES AND GAINS HEAT--it is a certain different value for each and every kind of material
Term
TRANSPARENT
Definition
means an object allows light to pass through it LIKE CLEAR GLASS LETS LIGHT PASS THROUGH IT
Term
ULTRAVIOLET LIGHT
Definition
light waves that are too short in length for our eyes to detect --THEY ARE SHORT IN LENGTH BUT HAVE ALOT OF ENERGY SO THEY CAN GIVE US SUNBURN OR BE HARMFUL TO OUR EYES
Term
WATTS - abbreviated (W)
Definition
a measurement of electrical power
YOU MAY USE A 60 WATT LIGHT BULB OR YOUR HOME MAY USE 1200 KILOWATTS OF ELECTRICAL ENERGY THAT YOU PAY FOR IN YOU HOME UTILITY BILL
Term
AVERAGE GLOBAL TEMPERATURE
Definition
a measurement of what the average temperature range is over the whole earth over a certain time period
FOR EXAMPLE DURING ONE THE ICE AGES ON EARTH THE "AVERAGE GLOBAL TEMPERATURE" OF THE EARTHWAS MUCH LOWER THAN OURS TODAY
Term
ASTEROID
Definition
a large piece of rock like material in space orbiting around the sun like the planets, but smaller than a planet
Term
BLACK HOLE
Definition
final stage of some stars where they collapse upon theirselves forming an extremely dense mass with a huge gravitational pull so strong that not even light can escape from it
Term
COMPARATIVE SIZES AND DISTANCES
Definition
looking at how two different objects like a model of something and the real thing relate to each other if the are to a scale that makes sense
Term
COMET
Definition
A MASS OF ROCK THAT ORBITS THE SUN ALONG WITH THE PLANETS AND WHEN ON OF THE COMETS ORBITS BRINGS IT CLOSE TO OUR EARTH WE MAY SEE IT GLOW AS PARTICLES OF IT HITS OUR ATMOSPHERE AND BURNS
Term
DROUGHT
Definition
a long period of time where there is little or no rain leave all vegetation dry and less ground and surface water
Term
DELTA
Definition
in earth science it is a triangular shaped land formation made when river sediments are deposited constantly in the place where the river flows into a larger body of water, usually an ocean or like the Gulf of Mexico because here the river speed slows down quickly and dirt and gravel sediments it usually carries become too heavy for the slower moving water to carry it farther
Term
frequency
Definition
how often something happens OR
in physics it is how many waves of a certain wavelength pass a certain point over a period of time FOR EXAMPLE; 10 WAVES PER SECOND
Term
FULL MOON
Definition
WHEN FROM EARTH THE SUNLIGHT REFLECTED OFF THE MOON LIGHTS UP THE WHOLE SIDE OF THE MOON THAT WE SEE ON EARTH
Term
GLACIER
Definition
a mass of snow and ice that turns into a
huge covering over the earth usually starting in a valley and carving out a deeper and deeper valley as it grows and flows to the ocean or another land formation that stops it
Term
LIMITED SOURCE OF ENERGY
Definition
a source of energy like petroleum, gas (not gasoline for cars), or coal that we will run out of because there is only so much of it that has already been made over time and it takes alot longer than many human lifetimes for it to make more of it again
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