ACTUAL Exam Questions and CORRECT
Answers
prediction - CORRECT ANSWER - a statement about what may happen in the future
based on prior experience or knowledge
repeated trials - CORRECT ANSWER - the number of times procedures are repeated,
usually 3-5, during a scientific experiment in order to achieve a more accurate result
controlled variables - CORRECT ANSWER - the variables in an experiment which are
held constant to test the effect of the independent variable upon the dependent variable
dependent (responding) variable - CORRECT ANSWER - the variable, within a scientific
experiment, which is affected by changes in the independent variable of the experiment
independent (manipulated) variable - CORRECT ANSWER - a variable that is changed by
the person conducting the experiment and not changed by other variables in the experiment
graduated cylinder - CORRECT ANSWER - a tall, narrow container with a volume scale
used to measure liquids
qualitative observation - CORRECT ANSWER - type of observation in which
characteristics of objects or events are described using your five senses
quantitative observation - CORRECT ANSWER - characteristics of objects or events
which can be measured using numeric values
conclusion - CORRECT ANSWER - a decision made after considering relevant facts and
evidence
, inference - CORRECT ANSWER - a conclusion drawn from evidence or reasoning
law - CORRECT ANSWER - a descriptive generalization about how some aspect of the
natural world behaves under stated circumstances
scientific critique - CORRECT ANSWER - an analysis of the strengths and weaknesses of
a scientific investigation
compound - CORRECT ANSWER - a pure substance composed of two or more elements
chemically combined
element - CORRECT ANSWER - a pure substance that cannot be broken down by
chemical or physical means
chemical properties - CORRECT ANSWER - characteristics of a substance that
determines how it interacts with other substances
density - CORRECT ANSWER - calculation of an object's mass divided by its volume
mass - CORRECT ANSWER - a measure of the amount of matter an object has
condensation - CORRECT ANSWER - change in the physical state of matter from gas to
the liquid phase
evaporation - CORRECT ANSWER - change in the physical state of matter from liquid to
gas phase that occurs only on the surface of the liquid
sublimation - CORRECT ANSWER - change in the physical state of matter from solid to
the gas phase without passing through the liquid phase