Conceptual Integrated Science Explorations
Chapter 7: Gravity
- 7.1 The Falling Apple and the Falling Moon
 - 7.2 Newton's Law of Universal Gravitation
 - 7.3 Gravity, Distance, and the Inverse-Square Law
 - 7.4 The Universal Constant of Gravitation, G
 - 7.A Ocean Tides
 - 7.5 Weight and Weightlessness
 - 7.6 Projectile Motion
 - 7.7 Fast-Moving Projectiles--Satellites
 - 7.B Earth Satellites
 
Table of Videos
- Self Study Course Descriptions
 - 
        Chapter 1: About Science
                                
- 1.1 The Nature of Science
 - 1.2 A Brief History of Advances In Science
 - 1.3 Mathematics and Conceptual Science
 - 1.4 The Scientific Method--A Classic Tool
 - 1.5 The Scientific Hypothesis
 - 1.6 The Value of Scientific Experiment
 - 1.7 Facts, Theories, and Laws
 - 1.8 Science Has Limitations
 - 1.9 Science, Art, and Religion
 - 1.10 Technology--The Practical Use of Science
 - 1.11 What Is Integrated Science?
 - 1.A An Investigation of Sea Butterflies
 
 - 
        Chapter 2: Newton's First Law
                                
- 2.1 Aristotle On Motion
 - 2.2 Galileo's Concept of Inertia
 - 2.3 Speed and Velocity
 - 2.A Comparing Speeds
 - 2.4 Motion Is Relative
 - 2.5 Newton's First Law of Motion
 - 2.6 Net Force--The Sum of All Forces On an Object
 - 2.7 Equilibrium for Objects at Rest
 - 2.8 The Support Force--Why We Don’t Fall Through the Floor
 - 2.9 Equilibrium for Moving Objects
 - 2.B Earth Moves Around the Sun
 
 - 
        Chapter 3: Newton's Second Law
                                
- 3.1 What Is Acceleration?
 - 3.2 Force Causes Acceleration
 - 3.3 Mass Is a Measure of Inertia
 - 3.4 Mass and Acceleration Are Related
 - 3.5 Newton’s Second Law
 - 3.6 Friction
 - 3.7 Objects In Free Fall Accelerate at the Same Rate
 - 3.8 Why Objects in Free Fall Accelerate at the Same Rate
 - 3.9 Air Drag
 - 3.A Friction In Your Fingertips
 - 3.B Gliding
 
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        Chapter 4: Newton's Third Law
                                
- 4.1 A Force Is Part of an Interaction
 - 4.2 Newton's Third Law--Action and Reaction
 - 4.3 A Simple Rule Helps Identify Action and Reaction
 - 4.4 Action and Reaction On Objects of Different Masses
 - 4.5 Action and Reaction Forces Act On Different Objects
 - 4.6 The Classic Horse-Cart Problem--A Mind Stumper
 - 4.7 Action Equals Reaction
 - 4.A Animal Locomotion
 - 4.8 Summary of Newton's Three Laws
 
 - 
        Chapter 5: Momentum
                                
- 5.1 Momentum Is Inertia In Motion
 - 5.2 Impulse Changes Momentum
 - 5.3 Increasing Momentum—Increasing Force, Time, or Both
 - 5.4 Practical Uses of the Impulse-Momentum Relationship
 - 5.A The Impulse-Momentum Relationship In Sports
 - 5.5 Momentum Is Conserved When No External Force Acts
 - 5.6 Momentum Is Conserved In Collisions
 
 - 
        Chapter 6: Energy
                                
- 6.1 Work--Force x Distance
 - 6.2 Power--How Quickly Work Gets Done
 - 6.3 Mechanical Energy
 - 6.4 Potential Energy Is Stored Energy
 - 6.5 Kinetic Energy Is Energy of Motion
 - 6.6 The Work-Energy Theorem
 - 6.7 Conservation of Energy
 - 6.8 Machines--Devices That Multiply Forces
 - 6.9 Efficiency--A Measure of Work Done for Energy Spent
 - 6.A Alternative Sources of Energy
 - 6.B Energy for Life
 
 - 
        Chapter 7: Gravity
                                
- 7.1 The Falling Apple and the Falling Moon
 - 7.2 Newton's Law of Universal Gravitation
 - 7.3 Gravity, Distance, and the Inverse-Square Law
 - 7.4 The Universal Constant of Gravitation, G
 - 7.A Ocean Tides
 - 7.5 Weight and Weightlessness
 - 7.6 Projectile Motion
 - 7.7 Fast-Moving Projectiles--Satellites
 - 7.B Earth Satellites
 
 - 
        Chapter 8: Heat
                                
- 8.1 Thermal Energy
 - 8.2 Temperature
 - 8.3 Absolute Zero--Nature's Lowest Possible Temperature
 - 8.4 What Is Heat?
 - 8.5 Heat Units Are Energy Units
 - 8.6 The Laws of Thermodynamics
 - 8.7 Entropy
 - 8.8 Specific Heat Capacity
 - 8.A Specific Heat Capacity and Earth's Climate
 - 8.9 Thermal Expansion
 - 8.10 Heat Transfer: Conduction
 - 8.11 Heat Transfer: Convection
 - 8.12 Heat Transfer: Radiation
 
 - 
        Chapter 9: Electricity
                                
- 9.1 Electric Charge Is a Basic Characteristic of Matter
 - 9.2 Coulomb's law--The Force Between Charged Particles
 - 9.3 Charge Polarization
 - 9.4 Electric Current--The Flow of Electric Charge
 - 9.5 An Electric Current Is Produced By Electrical Pressure--Voltage
 - 9.6 Direct Current and Alternating Current
 - 9.7 Ohm's Law--The Relationship Between Current, Voltage, and Resistance
 - 9.A Electric Shock
 - 9.8 Direct Current and Alternating Current
 - 9.9 Electric Power--The Rate of Doing Work
 - 9.10 Electric Circuits--Series and Parallel
 
 - 
        Chapter 10: Magnetism
                                
- 10.1 Magnetic Poles--Attraction and Repulsion
 - 10.2 Magnetic Fields
 - 10.3 Magnetic Domains
 - 10.4 Magnetic Fields Around Electric Currents
 - 10.A Earth’s Magnetic Field
 - 10.5 magnetic Forces on Moving, Charged Particles
 - 10.6 Electromagnetic Induction--How Voltage Is Created
 - 10.7 Generators and Alternating Current
 - 10.8 The Induction of Fields--Both Electric and Magnetic
 
 - 
        Chapter 11: Waves and Sound
                                
- 11.1 Special Wiggles--Vibrations and Waves
 - 11.2 Wave Motion--Transporting Energy
 - 11.3 Two Types of Waves--Transverse and Longitudinal
 - 11.4 Sound Travels In Waves
 - 11.A Sensing Pitch
 - 11.5 Speed of Sound
 - 11.6 Sound Can Be Reflected
 - 11.7 Sound Can Be Refracted
 - 11.B Dolphins and Acoustical Imaging
 - 11.8 Forced Vibrations and Natural Frequency
 - 11.9 Resonance and Sympathetic Vibrations
 - 11.10 Interference--The Addition and Subtraction of Waves
 - 11.11 The Doppler Effect
 
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        Chapter 12: Light and Color
                                
- 12.1 The Electromagnetic Spectrum
 - 12.2 Why Materials Are Either Transparent or Opaque
 - 12.3 Color Science
 - 12.A Mixing Colored Lights
 - 12.4 Mixing Colored Pigments
 - 12.B Why the Sky Is Blue
 - 12.C Why Sunsets Are Red
 - 12.D Why Clouds Are White
 
 - 
        Chapter 13: Properties of Light
                                
- 13.1 Reflection of Light--Light Bouncing Off a Barrier
 - 13.2 Refraction--The Bending of Light As Its Speed Changes
 - 13.A Illusions and Mirages Are Caused by Atmospheric Refraction
 - 13.B Light Dispersion and Rainbows
 - 13.3 Diffraction--The Spreading of Light
 - 13.4 Interference of Light Waves
 - 13.5 Interference Colors by Reflection from Thin Films
 - 13.6 Wave Particle Duality--Light Travels as a Wave and Strikes as a Particle
 - 13.A Illusions and Mirages Are Caused by Atmospheric Refraction
 - 13.B Light Dispersion and Rainbows
 
 - 
        Chapter 14: The Atom
                                
- 14.1 Discovering the Invisible Atom
 - 14.A A Breath of Air
 - 14.2 Evidence for Atoms
 - 14.B A First Look at the Periodic Table
 - 14.3 Protons and Neutrons
 - 14.4 Isotopes and Atomic Mass
 - 14.5 Electron Shells
 
 - 
        Chapter 15: Nuclear Energy
                                
- 15.1 Radioactivity
 - 15.2 Alpha, Beta, and Gamma Rays
 - 15.3 Environmental Radiation
 - 15.A Radiation Damage to the Body
 - 15.4 Transmutation of the Elements
 - 15.5 Half-Life
 - 15.B Isotopic Dating
 - 15.6 Nuclear Fission
 - 15.7 The Mass-Energy Relationship: E = mc(2)
 - 15.8 Nuclear Fusion
 
 - 
        Chapter 16: Elements of Chemistry
                                
- 16.1 Chemistry: The Central Science
 - 16.A Research
 - 16.2 The Submicroscopic World
 - 16.3 Change of Phase
 - 16.4 Physical and Chemical Properties
 - 16.5 Determining Physical and Chemical Changes
 - 16.6 The Periodic Table
 - 16.7 Elements and Compounds
 - 16.8 Naming Compounds
 
 - 
        Chapter 17: Bonds and Molecular Attractions
                                
- 17.1 Electron-Dot Structures
 - 17.2 The Formation of Ions
 - 17.3 Ionic Bonds
 - 17.A The Chemistry of Minerals
 - 17.4 Metallic Bonds
 - 17.5 Covalent Bonds
 - 17.6 Polar Covalent Bonds
 - 17.7 Molecular Polarity
 - 17.8 Molecular Attractions
 
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        Chapter 18: How Chemical Mix
                                
- 18.1 Most Materials Are Mixtures
 - 18.2 The Chemist's Classification of Matter
 - 18.3 Making Solutions
 - 18.4 Concentration and the Mole
 - 18.5 Solubility
 - 18.6 Soaps and Detergents
 - 18.A Purifying the Water We Drink
 
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        Chapter 19: How Chemicals React
                                
- 19.1 Chemical Equations
 - 19.2 Reaction Rates
 - 19.A Catalysts and the Atmosphere
 - 19.3 Energy and Chemical Reactions
 - 19.4 Chemical Reactions Are Driven By Entropy
 
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        Chapter 20: Acids, Bases, and Redox
                                
- 20.1 Acid and bases
 - 20.2 Relative Strengths of Acids and Bases
 - 20.3 Acidic, Basic, and Neutral Solutions
 - 20.A Acid Rain and Basic Oceans
 - 20.4 Losing and Gaining Electrons
 - 20.5 Electrochemistry
 - 20.6 Corrosion and Combustion
 
 - 
        Chapter 21: Organic Compounds
                                
- 21.1 Hydrocarbons
 - 21.2 Unsaturated Hydrocarbons
 - 21.3 Functional Groups
 - 21.4 Alcohols and Ethers
 - 21.5 Amine and Alkaloids
 - 21.6 Carbonyl Compounds
 - 21.7 Polymers
 - 21.A The Molecules of Life
 
 - 
        Chapter 22: The Basic Unit of Life: The Cell
                                
- 22.1 What Is Life?
 - 22.A The Big Molecules That Make Up Living Things
 - 22.2 What Is a Cell?
 - 22.3 The Two Types of Cells: Prokaryotic and Eukaryotic
 - 22.B The Microscope
 - 22.4 Tour of a Eukaryotic Cell
 - 22.5 The Organelles of Eukaryotic Cells
 - 22.6 The Cell Membrane
 
 - 
        Chapter 23: How Cells Work
                                
- 23.1 How Things Get In and Out of Cells
 - 23.2 How Do Cells Reproduce?
 - 23.3 Enzymes and the Chemical Reactions in Cells
 - 23.A ATP Fuels Chemical Reactions in Cells
 - 23.4 Photosynthesis
 - 23.5 How Cells Get Energy
 
 - 
        Chapter 24: DNA and Genes
                                
- 24.1 What Is a Gene?
 - 24.2 Chromosomes: Packages of Genetic Information
 - 24.A The Structure of DNA
 - 24.3 How DNA Is Copied
 - 24.4 RNA
 - 24.5 How Proteins Are Built
 - 24.6 Meiosis and Genetic Diversity
 
 - 
        Chapter 25: How Traits Are Inherited
                                
- 25.1 Mendel's Peas
 - 25.2 Mendel's First Law
 - 25.3 Mendel's Second Law
 - 25.4 More Wrinkles: Beyond Mendelian Genetics
 - 25.5 The Human genome
 - 25.6 Genetic Mutations
 - 25.7 Cancer: A Genetic Disease
 - 25.A Environmental Causes of Cancer
 
 - 
        Chapter 26: The Evolution of Life
                                
- 26.1 The Origin of Life
 - 26.A Did Life On Earth Come From Mars?
 - 26.2 How Living Things Change Over Time
 - 26.3 The Key to Evolution: Natural Selection and How It Works
 - 26.4 Adaptation
 - 26.B Staying Warm and Keeping Cool: How Animals use Physics in Thermoregulation
 - 26.5 Genetics and Evolution
 - 26.6 How a New Species Forms
 - 26.7 Evidence of Evolution
 - 26.8 How Humans Evolved
 
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        Chapter 27: Diversity of Life
                                
- 27.1 Classifying Living Things
 - 27.2 Evolution and Classification
 - 27.3 The Three Domains of Life
 - 27.4 Bacteria
 - 27.5 Archaea
 - 27.6 Protists
 - 27.7 Plants
 - 27.8 Fungi
 - 27.9 Animals
 - 27.A Coral Bleaching
 - 27.B How Birds Fly
 - 27.10 Viruses and Prions
 
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        Chapter 28: Control and Development
                                
- 28.1 How the Human Body Is Organized
 - 28.2 The Brain
 - 28.3 The Nervous System
 - 28.4 How Neurons Work
 - 28.A How Fast Can Action Potentials Travel?
 - 28.B Endorphins
 - 28.5 The Senses
 - 28.6 Hormones
 - 28.7 Reproduction and Development
 - 28.8 The Skeleton and Muscles
 
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        Chapter 29: Care and Maintenance
                                
- 29.1 Integration of Body Systems
 - 29.2 The Circulatory System
 - 29.A Hemoglobin
 - 29.3 Respiration
 - 29.4 Digestion
 - 29.5 Nutrition, Exercise, and Health
 - 29.B Low-Carb Versus Low-Calorie Diets
 - 29.6 Excretion and Water Balance
 - 29.7 Keeping the Body Safe: Defense Systems
 
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        Chapter 30: Ecosystems and Environment
                                
- 30.1 Organisms and Their Environments
 - 30.2 Species Interactions in Ecological Communities
 - 30.3 Energy Flow in Ecosystems
 - 30.A Energy Leaks When Organisms Eat
 - 30.4 Kinds of Ecosystems
 - 30.B Materials Cycling in Ecosystems
 - 30.5 Change In an Ecosystem
 - 30.6 Population Studies
 - 30.7 Human Population Growth
 
 - 
        Chapter 31: Plate Tectonics
                                
- 31.1 Earth Science Is an Integrated Science
 - 31.2 Earth's Composition
 - 31.A Density and Earth's Layers
 - 31.3 Earth's Structure
 - 31.4 Continental Drift--An Idea Before Its Time
 - 31.5 Seafloor Spreading
 - 31.B Magnetic Stripes Are Evidence of Seafloor Spreading
 - 31.6 The Theory of Plate Tectonics
 - 31.C What Forces Drive the Plates?
 - 31.7 Plate Boundaries
 - 31.D Life In the Trenches
 
 - 
        Chapter 32: Rocks and Minerals
                                
- 32.1 What Is a Mineral?
 - 32.2 Mineral Properties
 - 32.3 Types of Minerals
 - 32.A The Silicate Tetrahedron
 - 32.4 How Do Minerals Form?
 - 32.5 What Is Rock?
 - 32.6 Igneous Rock
 - 32.7 Sedimentary Rock
 - 32.B Coal
 - 32.8 Metamorphic Rock
 - 32.9 The Rock Cycle
 
 - 
        Chapter 33: Earth's Surface: Land and Water
                                
- 33.1 Survey of the Earth
 - 33.2 Folding and Faulting
 - 33.3 Mountain Building
 - 33.4 Plains and Plateaus
 - 33.5 Earth's Waters
 - 33.6 The Ocean
 - 33.A The Composition of Ocean Water
 - 33.7 Fresh Water
 - 33.B Water Pollution
 
 - 
        Chapter 34: Surface Processes
                                
- 34.1 Weathering, Erosion, and Deposition--Agents of Change
 - 34.A Weathering
 - 34.2 Running Water
 - 34.3 Glaciers
 - 34.4 Mass Movement
 - 34.5 Groundwater
 - 34.6 Waves
 - 34.7 Wind
 
 - 
        Chapter 35: Weather
                                
- 35.1 Atmosphere
 - 35.A Atmospheric Pressure
 - 35.2 The Structure of the Atmosphere
 - 35.B Heating the Atmosphere
 - 35.3 Temperature Depends of Latitude
 - 35.4 Why Are There Seasons?
 - 35.5 Flow of the Atmosphere--Wind
 - 35.C Wind Chill
 - 35.6 Some Winds Are Local--Others Are Global
 - 35.D The Coriolis Effect
 - 35.7 Ocean Currents Distribute Heat
 - 35.8 Water In the Atmosphere
 - 35.9 Changing Weather--Air Masses, Fronts, and Cyclones
 
 - 
        Chapter 36: Earth's History
                                
- 36.1 A Model of Earth's History
 - 36.2 Telling Relative Time
 - 36.A Dating a Rock--Telling AbsoluteTime
 - 36.3 The Geologic Time Scale
 - 36.B Precambrian Time
 - 36.C The Paleozoic Era
 - 36.D The Permian Extinction
 - 36.E The Mesozoic Era
 - 36.F The Cretaceous Extinction
 - 36.G The Cenozoic Era
 
 - 
        Chapter 37: Environmental Geology
                                
- 37.1 Earthquakes
 - 37.2 Tsunami
 - 37.3 Volcanoes
 - 37.4 Hurricanes
 - 37.5 Earth's Past ad Present Climate
 - 37.A Natural Causes of Climate Change
 - 37.B Future Climate--A Warmer Earth?
 
 - 
        Chapter 38: The Solar System
                                
- 38.1 Earth's Moon
 - 38.2 Eclipses—The Shadows of Earth and the Moon
 - 38.3 Tour of the Solar System
 - 38.A How Did the Solar System Form?
 - 38.4 The Sun
 - 38.5 The Inner Planets
 - 38.6 The Outer Planets
 - 38.B What Makes a Planet Suitable for Life?
 - 38.7 Asteroids, Comets, and Meteoroids
 
 - 
        Chapter 39: The Universe
                                
- 39.1 Seeing Stars
 - 39.2 The Light-year
 - 39.3 The Birth of Stars
 - 39.4 The Evolution and Death of Stars
 - 39.5 The Bigger They Are, the Harder They Fall—Supernovae
 - 39.6 Black Holes
 - 39.7 Galaxies
 - 39.A SETI
 - 39.8 The Big Bang