How do Scientists Think? Scientists use the skills of observing, inferring, and predicting to learn more about the natural world Aim: What is Physical.

How do Scientists Think?

Scientists use the skills of observing, inferring, and predicting to learn more about the natural world

Aim: What is Physical Science?

Chapter 1: Introduction to Physical ScienceMrs. Butler’s

Physical Science Class

Observing:

Qualitative observations=

using one or more

senses to gather information

descriptions that do not involve numbers or measurements

are measurements

Quantitative observations=

making a forecast of what will happen in the future based on past experience or evidence

Predicting:

Inferring: interpreting or explaining the reasons for your observations

The Study of Matter and Energy

Physical Science is the study of matter, energy, and the changes they undergo.

So what is matter?

So what is energy?

Matter is anything that occupies space and has mass.

Energy is the ability to do work or cause a change.

Physical Science is divided into two main

areasChemistry- the study of the properties of matter and how matter changes

Physics- the study of matter and energy and how they interact

• Posing questions

• developing hypotheses

• designing experiments

• collecting data

• interpreting data

• drawing conclusions

• communicating ideas and results

The process of Inquiry

Aim: Scientific Inquiry

What is a hypothesis?

A hypothesis is a possible answer to a scientific question or explanation for a set of observations.

Researchers must be able to carry out investigations and gather evidence that will either support or disprove the hypothesis

How do scientists test their hypothesis?

• Begin experiment by determining variables

• Variables are factors that can change in an experiment. In a well designed experiment only one variable is purposely changed

• Manipulated variable: the variable that is changed (by the scientist)(also known as independent variable)

• Responding Variable: the variable that is expected to change because the manipulative variable changed (also known as the dependent variable)

• Controlled Experiment an investigation in which all variables except one remain the same.

PHSchool.com

• Scientists use models and develop laws and theories to increase people’s understanding of the natural world.

• Scientific law is a statement that describes what scientists expect to happen every time under a particular set of conditions.

• Scientific theory is a well-tested explanation for a wide range of observations or experimental results.

Complete worksheet review and reinforce 1-2 scientific Inquiry in class (10 minutes)

Lab Safety: Behavior LISTEN AND FOLLOW INSTRUCTIONS What to do in case of an accident Broken glass and equipment Goggles, Aprons, gloves, shoes Materials: respect, pick up, and put away Fire: Long Hair, Ties Do NOT touch or experiment on your own without my approval Procedures during lab time Lab Rubric

Homework: Read section 1-3, Complete worksheets 1-3 review and reinforce; return signed safety sheets

Aim: What is Technology?

• Technology is a way of changing the natural world to meet human needs or solve problems

• An Engineer is someone who is trained to use both technology and scientific knowledge to solve problems.

The Technology Design Process

Identify the need

Research the problem

Design a solution (brainstorm, constraints, trade-trade offs)

Build a prototype

Troubleshoot and redesign

Communicate the solution

correct: 1-3 review and reinforce

Technology as a System• How would you describe a

system?Something made up of parts that work together

A technological system includes a goal, inputs, processes, outputs, and, in some cases, feedback.

They are designed to achieve a particular goal, or purpose.

Technology and SocietyHow has technology affected our society?

View on line Discovery School Video Field trip Intro. to Physical Science.