🟢1 The scientific method

Question 1

Define science

Answer 1

Science is the study of the physical,material and living world.

Question 2

Define biology

Answer 2

Biology is the study of living things

Question 3

Steps of The scientific method

Answer 3

OHERC (DCAH)
Making observations
Forming a hypothesis
Carrying out experiments
Recording the results
Forming a conclusion
Discarding,changing or accepting the hypothesis

Question 4

Define hypothesis

Answer 4

A hypothesis is an educated guess based on observations

Question 5

Define experiment

Answer 5

An experiment is a test for a hypothesis

Question 6

Define data

Answer 6

Data is the information gathered in experiments

Question 7

What is a theory

Answer 7

A theory is a hypothesis that has been supported by many different experiments.

Question 8

What is a principle or law

Answer 8

A principle or law arises from a theory when it is seen always to be true under all conditions over a long period of time

Question 9

What is a replicate

Answer 9

a replicate is when an experiment is repeated

Question 10

Define ethics

Answer 10

Ethics refers to whether issues/conduct are right or wrong

Question 11

3 ethical issues in science

Answer 11

-The origin of life
-Cloning animals
-Whether or not evolution took place
-Freezing human sperm and embyros
-The use of captive animals in experiments
-Organ transplants, especially from animals to humans

Question 12

Define observation

Answer 12

When something is noticed

Question 13

What is a conclusion

Answer 13

Summary of the results of an expirement

Question 14

what are three things u can do to a hypothesis

Answer 14

accept
reject
change

Question 15

Whats a variable

Answer 15

factor that may change in an experiment

Question 16

what is a control

Answer 16

used to provide a comparison against which the actual expiriment can be judged

Question 17

whats double blind testing

Answer 17

The person being tested and the tester both are unaware of whos receieving the real treatment an whos recieving the placebo

Question 18

Limitations of scientific method

Answer 18

1.Extent of our knowledge
2.Basis of investifation
3.Interpreting results
4.Changes in natural world
5.Accidental discoveries

Question 19

What does limitation 1.The extent of our knowledge mean

Answer 19

More information could be discovered if only we knew the correct questions to ask. As time goes on more knowledge is gained and more questions can be asked and hopefully answered.

Question 20

What does limitation 2.The basis of investigation mean

Answer 20

If an investigation is badly designed or improperly carried out it wont get results that are valid. Pg7 in book

Question 21

What does limitation 3.Interpreting results mean?

Answer 21

If results of an experiment are interpreted incorrectly, faulty conclusions and hypotheses may be drawn. Its important to analyse results in a proper manner.

Question 22

What does limitation 4.Changes in the natural world mean

Answer 22

Sometimes the scientific method can lead to results that apply only to living things at one particular time. as living things are constantly evolving, hypothesis must also be altered

Question 23

What does limitation 4.Changes in the natural world mean

Answer 23

Sometimes the scientific method can lead to results that apply only to living things at one particular time. as living things are constantly evolving, hypothesis must also be altered

Question 24

what does limitation 5. Accidental Discoveries mean

Answer 24

New insights are often provided by accidental disciveries. Such findings contributed enormously to the development of scientific thinking
Eg. Penicillin

Question 25

What are some ethical issues in science

Answer 25

Whether or not evolution took place
Use of captive animals in experiments
Cloning animals
Organ transplants
Contraception