1. Science
Chapter 1

2. Science Science What is science?
Science is an organized way of using evidence to learn about the natural world.
It is also the body of knowledge that scientists have built up after years of using this process.
It deals only in the natural world
Scientists collect and organize information, and look for patterns and connections between events.
Propose explanations that can be tested by examining the evidence.

3. What is the goal of science?
It is to investigate and understand nature, explain events in nature, and to use those explanations to make useful predictions.
Summary

4. The Scientific Method Scientific Method
The scientific method is a logical approach to the solution of a scientific problem.
Steps in the scientific method include making observations, proposing and testing hypothesis, and developing theories.

5. Steps of the Scientific Method
Steps to the scientific method
Hypothesis
Observation:
It involves using your senses – sight, hearing, touch, smell, and sometimes taste- to gather information.
2. Stating the Problem :
Making a question about the observations.
3. Forming a Hypothesis
Possible answer to a scientific question (Problem) or a set of observations based on your own experience/knowledge.
Must be able to test it

6. 4. Setting Up a Controlled Experiment
How do you set up a controlled experiment?
How do scientists test Hypothesis?
Controlled experiment
Variable
4. Setting Up a Controlled Experiment
The controlled experiment tests hypothesis
Controlled experiment is an experiment in which only one variable is tested.
Variables = factors in an experiment that can change.

7. 5. Recording and Analyzing Results
Data
How scientist display their data?
5. Recording and Analyzing Results
Scientist keep records of their observations or data.
Information gathered from observations is called evidence or data.
Scientists display their data by using graphs, tables, drawings, etc.
Today, they also use computers to analyze their data.

8. 6. Drawing a conclusion.
Using data/evidence from the experiment, a conclusion is formed.
If conclusion rejects hypothesis, then a new hypothesis must be formed.
After the conclusion, the scientists publish their results so other scientist can test their conclusions.

9. Theory:
After several experiments in which the hypothesis has been accepted, the hypothesis may become a theory.
Scientific Theory = a well tested explanation that unifies a broad range of observations. Supported with lots of evidence.
Popular theory = an idea not supported with evidence
Distinguish between hypothesis and theory.
Scientific theory
Difference between scientific theory and popular theory.
Popular theory

10. 4th Set up a controlled Experiment
The scientific method
1st Make observation
2nd State the Problem
3rd Form a Hypothesis
4th Set up a controlled Experiment
5th Analyze results
6th Draw conclusion
7th Theory