+Scientific Method

Question 1

What is the purpose of a control?

Answer 1

it acts as a comparison for our test condition in our experiment

Question 2

what is data

Answer 2

Measurements/observations gathered

Question 3

what is an hypothesis

Answer 3

proposed explanation for an observation

Question 4

what is an experiment

Answer 4

Testing the hypothesis

Question 5

what is a replicate

Answer 5

Repeating an experiment

Question 6

What is a theory

Answer 6

arises from a hypothesis that has been supported by multiple experiments

Question 7

what is double blinding testing/

Answer 7

Neither the tester or the participant knows who gets the drug

Question 8

what is ethics?

Answer 8

Refers to if experiments or issues are morally right or wrong

Question 9

what is an observation?

Answer 9

Unbiased, accurate report of an event

Question 10

What is a variable?

Answer 10

A factor that can be changed in an experiment

Question 11

what is the law

Answer 11

arises from a theory that has been supported by many experents over a long period of time

Question 12

what are principles of a good experiment?

Answer 12

repeatbale
large sample size
random selection

Question 13

what is single blinding?

Answer 13

Partici[ants do not know if they are in the treatment group or the control group but the testers do

Question 14

What is random selection?

Answer 14

participants are selected at random for the experiment

Question 15

What is non random selection?

Answer 15

participants are not selected at random for the experiment

Question 16

is a larger or smaller sample size better?

Answer 16

larger
-reduces bias
-increases reliability
-improves accuracy

If a sample size is too small it will not reflect the wider population

Question 17

why is a small sample size not as good as a larger size?

Answer 17

If a sample size is too small it will not reflect the wider population

Question 18

A good experiment must have a test and a control. But why?

Answer 18

We need the control to compare the control to a test group to see if the treatment or intervention actually works.

Question 19

where are results published?

Answer 19

• Scientists publish their findings primarily in scientific journals

Question 20

why do people publish experimental results?

Answer 20

Scientists publish their findings so other scientists can be informed and so other scientists can replicate their study.

Question 21

What are the limitations of the scientific method?

Answer 21

• Human error.
• The extent of our human knowledge
• The experiment may be designed poorly.
• Scientists’ ability to interpret results.
• Bias

Question 22

define experiment

Answer 22

it is a series of steps carried out to test the hypothesis

Question 23

what is an dependant variable

Answer 23

A variable that changes as a result of the independent variable changing

Question 24

what is an independant variable

Answer 24

It is the variable which you chnage to observe its effects on anothe variable

Question 25

what is a conclsuion ?

Answer 25

a summary of the exerpeimet

Question 26

what should a conclusion include

Answer 26

analsyis and summary of results Whether the hypothesis was true or false

Question 27

why do you need a large sample size

Answer 27

increases accuracy improve confidence in results

Question 28

why shpudl scientists publish their results

Answer 28

peer review so others can repeat investigation and compare

Question 29

outline the steps of a scientific method

Answer 29

carry out experiment gather results repeat analyse results publish in scientific journal develop a theory develop a law