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Flashcards in How Science Works Deck (40):
1

what do you do in the aim

ask a question
identify a problem
formulate an aim

2

what do you do in the hypothesis

research what is known already
formulate a hypothesis

3

what do you do in the plan

plan experiment/observation
(materials, method, variable, controls)

4

what do you do in the data

carry out experiment / make observations
record data (table)

5

what do you do in the analysis

display data (graph)
analyse data

6

what do you do in the conclusion

interpret results
write a conclusion
compare to hypothesis
report results

7

independent variable

the variable that you change in an experiment

8

dependent variable

the variable that is measured (observed)

9

control variable

the variable that you keep the same in an experiment

10

categorical variable

non-numerical variable

11

discrete variable

the numerical variable a whole number values

12

continuos variable

numerical variable that can be any value

13

fair test / valid

when there is only one independent variable (all of other variables are kept constant, so they don't affect the experiment (= control variables)

14

which variable is colour

categoric

15

which variable is height

continuos

16

which variable is age

continuos

17

which variable is number of children

discrete

18

which variable is left/right handed

categoric

19

which variable is leg number

discrete

20

for making tables, which variable goes in the left column?

independent variable

21

for making tables, which variable goes in the right column?

dependent variable

22

when calculating the mean do you include or exclude anomalies?

exclude

23

when drawing graphs, do you use a bar or line graph for a categorical variable?

bar graph

24

when drawing graphs, do you use a bar or line graph for a discrete variable?

bar graph

25

when drawing graphs, do you use a bar or line graph for a continuos variable?

line graph

26

when drawing a graph, which variable goes on the x axis

independent variable

27

when drawing a graph, which variable goes on the y axis

dependent varibable

28

with the dependent variable, which value do you only plot on the graph

the mean value

29

on a bar graph, you should have ... widths of columns

same

30

on a line graph, you should connect points with a ...

ruler

31

reliable

when results are consistent when repeated

32

anomalies

results that are very different from the rest

33

accurate

when results are correct (close to true value)

34

which two things help to achieve accuracy

a goof method of getting results
correctly functioning and sensitive equipment

35

aim

the purpose of an experiment

36

hypothesis

a suggestion for what you think you will observe

37

method

the way you're doing an experiment

38

observation

what you notice during an experiment

39

data

the results you collect

40

conclusion

a summary explanation of the results