You Need To Know This Yesterday Flashcards
independent variable
the variable which is altered during the scientific experiment
dependent variable
the variable being tested or measured during the scientific experiment
controlled variable
the variable that is kept the same throughout the scientific experiment
science
the systematic study of the natural world
atom
the smallest unit of a chemical element
cell
the smallest unit of living matter
charge
the amount of electricity carried by an object
clone
an organism that is genetically identical to the unit or individual from which it was derived
compound
a substance that is composed of two or more elements
conductor
any material electricity and heat can easily travel through
insulator
any material electricity and heat cannot pass through easily
electron
a tiny particle that has a negative charge and orbits the nucleus of an atom
element
a substance that cannot be broken up into a simpler substance
gas
a state of matter that has no definite shape or volume, such as air
homeostasis
the tendency of a system to maintain internal stability
ion
an atom or molecule that has an electric charge
liquid
a state of matter that has definite volume but no definite shape, such as water
matter
something that has mass and can exist as a solid, liquid or gas
molecule
two or more elements that are chemically joined
nucleus
the central part of an atom
organism
any living thing able to carry out life on its own
proton
a positively charged particle located in the nucleus of an atom
radiation
the movement of heat from one place to another by waves or particles
resistance
the extent to which a material opposes the flow of electricity. (copper has low resistance)
solid
a state of matter that has both definite shape and volume such as ice
solvent
a substance, usually a liquid, that can dissolve another substance
stimulus
anything in the environment that causes a living thing to react
substance
anything that has mass and occupies space
symbiosis
a close and prolonged association between two or more different organisms of different species
tropism
the response of a plant towards or away from a stimulus
velocity
the speed and direction of an object’s motion
