1. 1-1 What is Physical Science?

2. Natural Science is divided into 3 main branches:
Physical Science
Earth and Space Science
Life Science
In this class we will be focusing on Physical Science, which mainly focuses on the study of non-living things.

3. So what is Physical Science?
Physical Science is the study of matter, energy, and the changes they undergo.
Matter is anything that has mass and occupies space.
Energy is the ability to do work or cause change.
Turn to page 8 in your textbooks. What are the 2 main branches of Physical Science?

4. Branches of Physical Science
PHYSICS
CHEMISTRY
Study of matter, energy, motion, forces, and how they interact
Learn about different forms of energy
Apply the laws of physics that govern energy to Earth, the solar system, and the universe beyond
Ever wonder how a laser works? A physicist knows!
Study of the properties of matter and how matter changes
Learn about the particles that make up matter and properties of different forms of matter
Hydrogen alone is combustible. Oxygen alone is combustible. When combined in the form of water, H2O, they put out fire! Why?

5. Why Study Physical Science?
Because it is used everyday in the real world!
Who can think of some examples of when Physical Science is used in real life?
Consider these examples:
The water you shower with is heated by chemical fuel or electricity
You use force to crush food when you eat
The food you eat is converted into chemical energy that your body uses to perform all of your daily tasks
There are chemicals in toothpaste you use to brush your teeth

6. BIG ideas of Physical Science
force and energy
the laws of conservation
atoms, molecules, and the atomic theory
The behavior of particles of matter in solids, liquids, and gases

7. Skills Scientists Use:
Observing- Using one or more senses to gather information.
2 Types of observations:
1) Qualitative Observations- Do not involve numbers or measurements, “That man is tall.”
2) Quantitative Observations- Involve measurements, “That man is 6’5” tall.”
Inferring (or making an inference)- Based on your observations or what you already know; not always correct.
Predicting- making forecast of what will happen in the future based on past experience or evidence

8. Observation Versus Inference!
The lady is wearing a ring on left hand ring finger.
That lady is married.
The boy is carrying an umbrella.
It must be raining outside.
The man has grey hair.
That man is old.

9. Now you try! In your notes, classify the following as observations or inferences:
She must go to the beach a lot.
Her skin is very tan.
I smell funnel cake!
There may be an amusement park nearby.

10. Now you try! In your notes, classify the following as observations or inferences:
She must go to the beach a lot.
Her skin is very tan.
I smell funnel cake!
There may be an amusement park nearby.
 INFERENCE
 OBSERVATION
 OBSERVATION
 INFERENCE