Definitions

Question 1

What is science?

Answer 1

The study of the natural world

Aims to find the “truth” (explanations)

Question 2

What is technology?

Answer 2

The application of a scientific discovery

How we use scientific knowledge

Question 3

Purpose (intro) 1

Answer 3

Recognizing a problem and stating the purpose of the experiment

Question 4

Hypothesis (intro) 2

Answer 4

Making an educated guess about the possible answer to your problem, gives direction
- often written as if… then… statement

Question 5

Apparatus (proof) 3

Answer 5

A collection of MATERIALS and EQUIPMENT you will need to carry out the experiment

Question 6

Procedure (proof) 4

Answer 6

Outlining the steps of your experiment, then doing the experiment

Question 7

Observation (proof) 5

Answer 7

Observing, collecting and recording your results (data) in a table, graph or diagram

Question 8

Qualititative

Answer 8

An observation based on “quality” observed by our sense
- described using words only
Example: colour

Question 9

Quantitative

Answer 9

An observation based on a measurement, uses numbers

Example: length, weight

Question 10

Discussion (conc.) 6

Answer 10

Analyzing your results (usually in the form of questions)

Question 11

Conclusion 7

Answer 11

An interpretation of the results of an experiment
- what did you learn?

A conclusion must include:

1. was your hypothesis correct? Explain
2. giving your answers to your original questions
3. discuss sources of error ( at least 3 )

Question 12

What is a variable?

Answer 12

Is an factor/ characteristic that can effect the outcome of an experiment. A variable can be kept constant or can change

Question 13

What is a controlled experiment?

Answer 13

Is an experiment where only one variable is changed so we are sure it is the one causing the effect

Question 14

What is an independent variable?

Answer 14

Is the factor that is changed and causes the effect

Question 15

What is a dependent variable?

Answer 15

Is the factor that gets effected by the independent variable

Question 16

What is a control variable

Answer 16

Is kept constant, or not changed in any way

Question 17

What is a test case?

Answer 17

Part of the experiment where a variable is changed to observe an effect

Question 18

What does control mean?

Answer 18

Part of the experiment where no variables are changed; the results are expected and used as a comparison

Question 19

What does accuracy mean?

Answer 19

Refers to how close a measurement is to the true value of the quantity

Question 20

What does precision mean?

Answer 20

Refers to how close a set of measurements are to one another, regardless whether they are correct

ANALOGY: an archer shooting arrows at a target

Question 21

What does theory mean?

Answer 21

Is a summary of a hypothesis or group of hypotheses that have been supported with repeated testing. A theory is valid as long is there is no evidence to disprove it. Therefore, theories can be disproved. If evidence accumulates to support a hypothesis, the the hypothesis can become accepted as a good explanation of a phenomenon

Question 22

What does law mean?

Answer 22

A SCIENTIFIC LAW is a statement that describes the behaviour of some particular thing or things found in the natural world. This done with many successful scientific experiments that produce the same results over and over again

Question 23

What is a model?

Answer 23

A model in science is a physical , mathematical or logical explanation of things, phenomena or processes found in nature

Question 24

what is a define value

Answer 24

Or conversion factor also has an infinite number of significant digits
Example: 1 min = 60 sec