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Forces

Unit 3 Vocabulary

TermDefinition
control The substance, object or group of things in an experiment that are not changed.
controlled experiment An experiment where all variables are kept the same except for the one being tested.
force A push or a pull that can change the position and/or motion of an object.
friction A force that acts in an opposite direction to motion. Resists, or slows motion.
gravity The force that pulls objects toward each other. Objects with greater mass have more than those with lesser mass.
magnetism The force that pulls certain metals (steel, nickel, iron, or cobalt) across a distance.
motion A change in position of an object.
position The place where something is located or has been put.
pull A force that moves something toward or with you.
push A force that moves something away from you.
reliability In an experiment, this is determined by repeated trials and how often the same results are achieved.
testable hypothesis A prediction that can be tested by experiment or observation.
valid conclusion We make this when we analyze and describe what was learned from an experiment based on data.
variable Any part of an experiment that is changed. Scientists change one at a time to determine the effects of the change.
meter stick A tool used to measure length.
data The information we collect during an experiment that is recorded on a table, or chart.
increase To get more of or to go higher.
decrease To have less or go down
table Another word for a chart where we record information during an experiment.
repeated trials These give scientists a bigger picture and more reliable data.
Created by: Plainview 5th