Topic 2 - Scientific Method

Question 1

What is the scientific method?

Answer 1

A way to ask and answer scientific questions by making observations and doing experiments. CAUSE - EFFECT

Question 2

Which are the 5 steps?

Answer 2

1. Observations and research
2. Hypothesis
3. Experiments
4. Data collection, analysis and conclusion
5. Communicate findings

Question 3

Observe and question:

Answer 3

• Use your senses to perceive interesting events
• Background research
• Based on observation and research, ask questions to to establish the production of investigation
• Scientific questions, starts with How, What, When or Determine

Question 4

What is a variable?

Answer 4

Any factor, characteristic, or condition

Question 5

Types of variables:

Answer 5

Independent, dependent, controlled. Must be quantified, measured and observed. Specific values

Question 6

Independent variable:

Answer 6

You decide the values

Question 7

Dependent variable:

Answer 7

Values that depend from the independent

Question 8

Controlled Variables:

Answer 8

All the other variables involved in a situation, must keep constant and avoid affecting the results

Question 9

Hypothesis:

Answer 9

• Is a tentative explanation, an educated guess or supposition for the observed event
• Must be easily measured or tested
• Must be a relation between 2 variables
• Use IF this occur, THEN that will happen to the dependent var.

Question 10

Experiments:

Answer 10

• The experiment is carried with the goal of verifying, rejecting, or validating a hypothesis
• The experiment change something in the independent cause that the dependent vary

Question 11

Data analysis and conclusion

Answer 11

• Collect the data, analyze it, draw conclusion
• The result are referred to the data obtained, by observations and measurements
• Use charts and graphs, analyze them to determine if your hypothesis is accepted or rejected
• Analyze relationships between variables

Question 12

Communicate findings

Answer 12

• Having the conclusions you will communicate your findings in a final report
• Can be published in a paper, magazine, newspaper
• Formulate a theory: When experiments can be repeated by many scientists confirming the hypothesis and making a theory