Science Facts Part 1

Question 1

Accuracy

Answer 1

A measurement result is considered accurate if it is judged to be close to the true value

Question 2

Range

Answer 2

The maximum and minimum values in the data collected

Question 3

Control Variable

Answer 3

The control variable is one which may unwantedly affect the outcome of the investagation and therefore has to be kept constant or at least monitored.

Question 4

Evidence

Answer 4

Data which has been shown to be valid

Question 5

Validity

Answer 5

Suitability of the investigative procedure to answer the question being asked

Question 6

Independent Variable

Answer 6

The variable for which values are changed by the investigator in the experiment

Question 7

Repeatable

Answer 7

A measurement is repeatable is the original experimenter repeats the investigation using the same method and equipment and obtains the same results

Question 8

Anomalies

Answer 8

These are values in a set of results which are judged not to be part of the variation caused by random uncertainty

Question 9

Precision

Answer 9

Precise measurements are ones in which there is very little spread about the mean value

Question 10

Reproducible

Answer 10

A measurement is reproducible if the investigation is repeated by another person, or by using different equipment or techniques, and the same results are obtained

Question 11

Dependent Variable

Answer 11

The variable which is measured in the experiment

Question 12

Hypothesis

Answer 12

A proposal intended to explain certain facts or observations

Question 13

Resolution

Answer 13

This is the smallest change in the quantity being measured (input) of a measuring instrument that gives a perceptible change in the reading