ScienceWik-Tionary

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Our Vocabulary words are listed below. Add sentences using the word below the definitions. Anytime you add a new sentence, please change your font color.

=A = = Absolute Zero = Temperaterature where motion stops. 0 degrees Kelvin or 2.73.15 oc. = **Absolute humidity:** = In a system of moist air, the ratio of the mass of water vapor to the total volume of the system. Usually expressed as grams per cubic meter (g/m3).

The absolute humidity today is 2 g/m3.

__acceleration__ the rate of change of velocity with respect to time; //broadly// **:** change of velocity

This car has quick acceleration! - Erin

__ acid __ Compound that gives off H+ ions in solution.

We used acid in our science experiment.

__amplitude__ the extent or range of a quality, property, process, or phenomenon: as //a// **:** the extent of a vibratory movement (as of a pendulum) measured from the mean position to an extreme //b// **:** the maximum departure of the value of an alternating current or wave from the average value

__asexual reproduction__ a mode of reproduction by which offspring arise from a single parent, and inherit the genes of that parent only, it is reproduction which does not involve [|meiosis], [|ploidy] reduction, or [|fertilization].

Some cells split via budding causing asexual reproduction. - Sue = **Algae:** = The common name for the relatively simple type of unicellular or multicellular plant which is never differentiated into root, stem, and leaves, contains chlorophyll a as its photosynthetic pigment, has no true vascular system, and has no sterile layer of cells surrounding its reproductive organs. Found in most habitats on Earth, though the majority occur in freshwater or marine environments.

There was algae at the bottom of the pond. -Jessica


 * Atom** - A point-like particle with a negative charge; member of the lepton group and thus not divisible into more fundamental particles. //One atom of oxygen has 8 electrons.//

=B = =Big Bang-= The explosion and rapid explansion of matter that occurred at the creation of our universe. The universe began with the Big Bang. - Teresa =Bohr Model - The amount of energy given to an electron when passing from the negative end to the positive end of a one-volt battery.=

Blizzard:
===A bad storm lasting 4 or more hours. It has low temperatures, bad winds, and snow. True blizzard conditions are most common on the prairies of Canada and the United States. Blizzards are a rare occurrence on the west coast and in Atlantic Canada. ===

=C =

= **Cancer:** = =A syndrome that involves the uncontrolled and abnormal division of eukaryotic cells. An informal term for a diverse class of diseases marked by abnormal cell proliferation.=

Joey has stage 4 cancer.

__cell division__ the process by which cells multiply involving both nuclear and cytoplasmic division

__cell organelles (ribosome,mitochondria, chloroplast, vacuole,lysosome)__

__chromosome__ chromosphere The layer of the solar atmosphere that is located above the photosphere and beneath the transition region and the corona.

Chromosphere is one of three layers of the sun.-Teresa

__crest__ a ridge or prominence on a part of an animal body

The rooster has a crest on top of its head. - Danny