The Gravitational Force - Apologia

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Physical Science Video Lessons

Introduction
What is Science?
Science and Technology
What is Physical Science?
The Scientific Process
Making Observations
You Do Science
Experiment 1.1
Forming Hypotheses
Conducting Experiments
Analyzing Data
Drawing Conclusions
Scientific Theories and Laws
Science Does Not Prove
When Direct Observation Isn't Possible In the Scientific Method
The Metric System
Converting Units
Organizing, Analyzing, and Presenting Scientific Data
Data Tables
Analyzing Data with Graphs
Experiment 1.2
Analyzing Data with Graphs - Advanced Concepts
Summing Up

Introduction
Classifying Matter
Pure Substances and Mixtures
Classifying Matter
Kinetic Theory of Matter
Experiment 2.1
Kinetic Theory of Matter - Advanced Concepts
Properties of Matter
Physical Properties
Experiment 2.2
Physical Properties - Advanced Concepts
Chemical Properties
Changes in Matter
Physical Changes
You Do Science
Physical Changes - Advanced Concepts
Chemical Changes
Experiment 2.3
Summing Up

Introduction
A History of the Atom
Ancient Atomic Models
Dalton's Atomic Theory
Thomson's Atomic Model
Rutherford's Atomic Model
The Structure of Atoms
Atomic Number and Mass Number
Modern Atomic Theory
Bohr's Atomic Model
The Electron Cloud Quantum-Mechanical Model
Experiment 3.1
Organizing Elements: The Periodic Table
Mendeleev's Periodic Table
Experiment 3.2 - Advanced Concepts
Modern Periodic Table
Representative Groups
Summing Up

Introduction
A Model for Chemical Changes
Chemical Formulas
You Do Science
Chemical Equations
Types of Chemical Bonding
Ionic Bonds
Covalent Bonds
Experiment 4.1
Hydrogen Bonds
The Wonder of Water
Solubility
Hydrogen Bonding & The Phases of Water
Experiment 4.2
Cohesion, Adhesion, and Surface Tension
Experiment 4.3
Summing Up

Introduction
Naming Compounds & Writing Formulas
Describing Ionic Compounds
Describing Molecular Compounds
Types of Reactions
Synthesis
Decomposition
Experiment 5.1
Advanced Concepts
Combustion
Energy Changes in Reactions
Energy in Chemical Bonds
Exothermic Reactions
Endothermic Reactions
Experiment 5.2
You Do Science
Summing Up

Introduction
Distance and Displacement
A Frame of Reference
Measuring Distance
Measuring Displacement
Adding Displacement
Speed and Velocity
Speed
Graphing Speed
You Do Science
Velocity
Experiment 6.1
Acceleration
Graphing Acceleration
Summing Up

Introduction
Forces
Combining Forces
Friction
Gravity
Experiment 7.1
Advanced Concepts - Gravity
Newton's Laws of Motion
A Brief History
Newton's First Law of Motion
Experiment 7.2
Newton's Second Law of Motion
Newton's Third Law of Motion
Experiment 7.3
You Do Science - Balloon Rockets
Fundamental Forces
The Electromagnetic Force
Nuclear Forces
The Gravitational Force
Summing Up

Introduction
Energy
Types of Energy
Experiment 8.1
Forms of Energy
You Do Science - Ball Bounce
Forms of Energy
Conservation of Energy
Energy, Work, and Power
Power
Work and Machines
Work Input Work Output
Mechanical Advantage
Simple Machines
You Do Science - Simple Machine Lever
Summing Up

Introduction
Mechanical Waves
Types of Mechanical Waves
Properties of Waves
Amplitude
Frequency and Period
Wavelength
Wave Speed
Sound
Experiment 9.1
You Do Science - "Seeing" Sound Waves
Hearing
You Do Science - Feeling Sound Waves
The Speed of Sound
Intensity and Loudness
Experiment 9.2
Wavelength, Frequency, and Pitch
Experiment 9.3
Wavelength, Frequency, and Pitch
You Do Science - The Doppler Effect
Summing Up

Introduction
Electromagnetic Radiation & Electromagnetic Waves
The Speed of Light
Wavelength & Frequency
The Dual Nature of Light
The Electromagnetic Spectrum
Wavelengths Longer Than Visible Light
Visible Light
Experiment 10.1
You Do Science - The Temperature of the Rainbow
Wavelengths Shorter Than Visible Light
The Behavior of Light
Interactions of Light
Experiment 10.2
You Do Science - The Magical Quarter
Interactions of Light Continued
Experiment 10.3
Summing Up

Introduction
A Detailed Look at the Electromagnetic Force
James Clerk Maxwell
The Electromagnetic Force
Experiment 11.1
Advanced Concepts - The Electromagnetic Force
Electrical Charge
Electric Field
Charging Objects
Experiment 11.2
Advanced Concepts - Charging Objects
Electrical Circuits
Voltage
Electric Current
Conductors & Insulators
Resistance
You Do Science
Switches & Circuits
Magnetism
Experiment 11.3
Magnetic Materials
Magnets & Magnetic Forces
More About Magnetic Fields
Summing Up

Introduction
Earth's Structure
The Crust
The Mantle
Experiment 12.1
The Core
Rocks & Minerals
Rocks
Minerals
Processes of the Lithosphere
The Rock Cycle
The Hydrosphere & The Hydrologic (Water) Cycle
Experiment 12.2
Weathering
You Do Science - Mechanical Weathering Model
You Do Science - Chemical Weathering Model
Erosion Shapes the Land
Summing Up

Introduction
Our Atmosphere
Carbon Dioxide in the Air
Experiment 13.1
Atmospheric Pressure
Experiment 13.2
Atmospheric Pressure Continued
You Do Science Atmospheric Pressure
Energy in the Atmosphere
What is Temperature
Experiment 13.3
Layers of the Atmosphere
The Temperature Gradient in the Atmosphere
The Ionosphere
Beyond Our Atmosphere
Summing Up

Introduction
Chemistry & Biology
Carbon Chemistry
Hydrocarbons
Fossil Fuels
The Chemistry of Life
Biochemical Compounds
You Do Science Lipids
Advanced Concepts
Other Chemical Nutrients
Experiment 14.1
Chemical Reactions in Life
Physics & Life
Physics at the Park
Transportation & Physics
You Do Science - Bernoulli's Principle
Physics & Forensics
Physics & Health
Summing Up

Introduction
Conducting Research
Getting Started
Brainstorming & Narrowing
Finding Credible Sources
Performing Research
Preparing Your Research for Presentation
Organize the Information
Write a Thesis Statement
Create an Introduction
Expand the Main Points
Form a Conclusion
Review Your Work
Your Turn
Summing Up

The Gravitational Force

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