Unit 1 vocab

Question 1

independent variable

Answer 1

The variable that the experimenter decides to change to see if there is or is not an effect.

Question 2

dependent variable

Answer 2

The variable to the experiment that responds to the change.

Question 3

universal precautions

Answer 3

the set of procedures used to avoid contact with body fluids and to reduce the risk of spreading HIV and other diseases.

Question 4

hypothesis

Answer 4

A testable prediction, often implied by a theory.

Question 5

experiment

Answer 5

A research method in which an investigator manipulates one or more factors to observe the effect on some variable.

Question 6

conclusion

Answer 6

A judgement based on the information obtained.

Question 7

prototype

Answer 7

A full-scale working model used to test a design concept by making actual observations and necessary adjustments.

Question 8

metric system

Answer 8

The system of measurement used in science that is based on units of 10. {Length - meters, Mass - grams, Volume - liters}

Question 9

accuracy

Answer 9

A description of how close a measurement is to the true value of the quantity measured.

Question 10

precision

Answer 10

The degree to which repeated measurements show the same result.