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Science Terms

Act Science Terms

Acceleration The rate of change in velocity
Velocity The rate of change in distance with respect to time
Variables The elements of an experiment that change or could change
Kinetic energy The energy of a body in motion
Mass The quantity of a body’s matter
Molecule A group of bonded atoms
Neutrons Particles with zero charge
Nucleus The part of the atom that contains protons and neutrons
Potential energy The amount of useable energy a body has when it’s not moving
Protons Particles with a positive energy charge
Radiation Transfer of energy as waves or rays
Reactants The substances that participate in a chemical reaction
Gravity The force that attracts an object toward the center of the earth
Hypothesis The prediction of how the independent variable in an experiment will affect the dependent variable
Independent variable The variable controlled by the experimenter
Inertia The tendency of a body to remain at rest
Ion Atom with an unbalanced electrical charge due to a loss or gain of electrons
Allele A gene variant
Atom A particle that contains protons, neutrons, and electrons and is the smallest part that can be involve in a chemical reaction
Gene A section of DNA that determines inheritance
Gamete A sex cell that carries the genes of both parents
Fluid A liquid or gas
Element A substance comprised of atoms with the same atomic number and cannot be split into smaller substances
Electrons Negatively charged atomic particles
Elasticity The ability of a substance to return to its original shape
Boiling point The temperature when a liquid becomes a gas
Density The mass per volume in a substance
Convection Heat transfer as a result of fluid movement
Control group The group in an experiment that provides a standard for comparison because it doesn’t receive the independent variable
Constant The elements of an experiment that are controlled to remain the same
Conduction Heat transfer as a result of molecular interaction
Compound A substance made up of more than one element
Chromosomes The structure of nucleic acids and proteins that carries the genetic material in a cell
Chemical reaction The rearrangement of atoms to form new substances
Charge The either positive or negative amount of unbalanced energy
Dependent variable The variable in an experiment that changes as a result of effect of the independent variable
Buoyancy The ability of an object to float
Cell The smallest independent element of an organism
Created by: rblount



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