September 4 th – Thursday Change – due date for Author’s Page is Now Thursday September 10 th. Change – due date for Author’s Page is Now Thursday September 10 th. Take out your binders and pencil – open up to your notes section Take out your binders and pencil – open up to your notes section Today we will be taking notes on Chapter 1 Section 2 Today we will be taking notes on Chapter 1 Section 2 –You will be able to identify the steps that are involved with the scientific method/inquiry –You will identify what data is and how analyzing and displaying data is essential to the communication of scientific ideas

September 8 th Agenda Book out – copy homework for week Binder Open – notes from last week ready to review. – You will be able to identify the steps that are involved with the scientific method/inquiry – You will identify what data is and how analyzing and displaying data is essential to the communication of scientific ideas

Chapter 1 Introduction to Physical Science

What is Physical Science? Physical Science is the study of matter, energy, and the changes they undergo. Physical Science is divided into 2 main areas: 1. Physics 2. Chemistry

Scientific Inquiry Scientific Inquiry – various organized methods of trying to solve problems and answer questions. The basic process of Scientific Inquiry: 1. Posing a Question 2. Develop a Hypothesis 3. Design an Experiment 4. Collect and Interpret Data 5. Drawing Conclusions 6. Communication

Posing a Question You need a scientific question – can be answered by making observations or collecting data. Ex: Does the size of a shadow depend on the distance between the light and the object? Scientific Inquiry cannot answer questions based on opinions, values, or judgments. Ex: Which photo is the most interesting in a photo contest?

Form a Hypothesis A hypothesis is a possible answer to a scientific question or explanation for a set of observations. Ex: I predict changing the distance between an object and the light source changes the size of the object’s shadow.

Designing an Experiment Experiments are used to test your hypothesis. Variables – factors that can change in an experiment. In a well-designed experiment only one variable is purposely changed. The variable that is changed is the manipulated variable (independent variable). The variable that is expected to change due to the manipulated variable is the responding variable (dependent variable).

Which variable is which? Our hypothesis - I predict changing the distance between an object and the light source changes the size of the object’s shadow. Manipulated variable = distance between light and source Responding variable = the height of the shadow produced.

Collecting and Interpreting Data Data – facts, figures, and other evidence gathered through observations. Scientist create data tables to keep data organized. Look for trends or patterns in your data. Use GRAPHS to help organize data. Distance between object and light (cm) Height of Shadow (cm)

GRAPHS

Drawing Conclusions After scientist interpret their data, they draw a conclusion about their hypothesis. A conclusion states whether or not the data supported the hypothesis. Ex: I conclude that the height of a shadow decreases as the light is moved further and further away from the object.

Communicating An important part of scientific inquiry is communicating. Communicating is sharing ideas and conclusions with others through writing or speaking. Scientist often communicate by giving talks at meetings, sharing results via the internet, or publishing articles in scientific journals.