2. Physical Science and You
Chapter One: Studying Physics and Chemistry
Chapter Two: Experiments and Variables
Chapter Three: Key Concepts in Physical Science

3. Chapter One: Studying Physics and Chemistry
1.1 The Physical Science in Your Life
1.2 Time and Length
1.3 Inquiry and the Scientific Method

4. Inquiry and Scientific Evidence
Investigation 1A
Inquiry and Scientific Evidence
How do scientists discover things that they may not see or touch?

5. 1.1 The Physical Science in Your Life
Before cars, it was a three-week, dangerous adventure to travel 500 miles between San Diego and San Francisco.
How long does it take to get from San Diego to San Francisco in a car today?

6. 1.1 The Physical Science in Your Life
Physics tells us how fast objects move or how much force it takes to get objects moving.
Physics also tells us how much force it takes to make objects turn or stop.
How long does it take to stop a moving truck?

7. 1.1 The Physical Science in Your Life
Chemistry is the science that concerns the different kinds of matter.
It also explains how different kinds of matter are created and how matter can be changed from one kind to another.

8. 1.1 The Physical Science in Your Life
Matter is everything that has shape and takes up space.

9. 1.1 The Physical Science in Your Life
Biochemistry is a branch of chemistry that explores exactly how plants and animals use chemicals and energy.
This sea otter needs chemicals to provide energy to keep its body warm.

10. 1.1 The sun is the source of energy for Earth
Energy measures the ability for things to change.
Energy is exchanged when anything changes.
Nothing changes when no energy is exchanged.