Nature of Science

Why do scientists control variables in an experiment?

• to prove that the experiment is fair.

• to show that the results of the experiment are correct.

• to find out how the variables are related.

• to make a model.

What does infer mean?

• to observe using your senses

• to conduct an experiment

• to use what you know and what you observe to make a conclusion.

Which of these is a factor in an experiment that may change, but is controlled by the scientist?

• model

• investigation

• variable

a procedure of steps carried out under controlled conditions to test a hypothesis/answer a question

• model

• investigation

• experiment

• research

when a scientist (student) conducts the same experiment as another scientist in order to verify their results, when the same results are collected, regardless of who is conducting the experiment

• replication

• repitition

• trials

• accuracy

conducting the exact same experiment over and over and over again

• replication

• repetition

• trials

• accuracy

the portion of an experiment that you do NOTHING to; it serves as a comparison to the experimental group; it is what you will use to compare to the other lab outcomes

• evidence

• control group

• variable

• constant

any factor in an experiment that can be changed in order to study or test a hypothesis in a scientific experiment.

• evidence

• control group

• variable

• constant

a belief or judgement; what someone thinks/feels about a particular thing

• constant

• opinion

• testable

• observation

using your 5 senses and/or scientific instruments to collect information about the natural world

• opinion

• observation

• testable

• valid