Nature of Science

Which phrase defines scientific theory?

• a well supported explanation

• an untested idea

• an educated guess

• an accepted description

What is the best definition of replication

• making up results to fit an hypothesis

• following another scientist's procedure and doing the experiment

• repeated trials in an experiment

• a scientist repeating his own experiment

What might cause a scientific theory to change?

• scientific model

• a new law

• individual claims

• new evidence

Which is not an example of a scientific question?

• Why is that dog limping?

• How long will it take to get there?

• Where did you put the book?

• What will happen if I add more salt?

An hypothesis is a testable idea that explains an observed event.

• True

• False

What is a variable in a scientific experiment?

• a range of values for a particular quantity in an experiment

• set of possible outcomes for an experiment

• a question being explored by an investigation

• any factor that can change in a controlled experiment

An experiment should have 3 independent variables.

• True

• False

What part of an experiment is manipulated or changed

• dependent variable

• control group

• controlled variable

• independent variable

The scientific method allows someone to make prediction, test , and make conclusions about a problelm.

• true

• False

Which variable is considered the outcome?

• dependent variable

• controlled variable

• independent variable

• control group