CK-12 Foundation
Ck 12: Physical Science: Types of Friction
[Free Registration/Login may be required to access all resource tools.] The four types of friction and how they act on objects.
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Ck 12: Physical Science: Wave Interference
[Free Registration/Login may be required to access all resource tools.] What wave interference is, constructive and destructive interference and how standing waves occur.
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Ck 12: Physical Science: States of Matter
[Free Registration/Login may be required to access all resource tools.] Definition of state of matter and the three common states of matter and their differences.
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Ck 12: Physical Science: Vision and the Eye
[Free Registration/Login may be required to access all resource tools.] The structure and function of the eye and how we see.
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Ck 12: Physical Science: Chemical Reaction Overview
[Free Registration/Login may be required to access all resource tools.] Provides an introduction to chemical reactions.
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Ck 12: Physical Science: Compound Machine
[Free Registration/Login may be required to access all resource tools.] Provides a definition of a compound machine with examples and discusses the efficiency and mechanical advantage of compound machines.
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Ck 12: Physical Science: Electrical Grid
[Free Registration/Login may be required to access all resource tools.] Explains what an electrical grid is and the role of power plants, transmission lines, and electric substations.
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Ck 12: Physical Science: Electric Safety
[Free Registration/Login may be required to access all resource tools.] Overview of electric safety: short circuits, electric safety features, and how to use electricity safely.
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Ck 12: Physical Science: Inclined Plane
[Free Registration/Login may be required to access all resource tools.] Discusses what an inclined plane is, its mechanical advantage, and how it changes force to make work easier.
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Ck 12: Physical Science: Momentum
[Free Registration/Login may be required to access all resource tools.] Definition of momentum and how it relates to mass and velocity, and calculating momentum.
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Ck 12: Physical Science: Mixtures
[Free Registration/Login may be required to access all resource tools.] Definition of mixture and examples, homogeneous and heterogeneous mixtures, types of mixtures and how to separate mixtures.
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Ck 12: Physical Science: Melting
[Free Registration/Login may be required to access all resource tools.] What happens to matter when it melts and the definition of melting point.
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Ck 12: Physical Science: Friction
[Free Registration/Login may be required to access all resource tools.] Definition of friction, why it occurs, and the factors that affect it.
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Ck 12: Physical Science: Conservation of Mass in Chemical Reactions
[Free Registration/Login may be required to access all resource tools.] Explains Law of conservation of mass and why chemical equations must be balanced.
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Ck 12: Physical Science: Calculating Acceleration From Force and Mass
[Free Registration/Login may be required to access all resource tools.] How to calculate acceleration from force and mass, and force from mass and acceleration.
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Ck 12: Physical Science: Vision Problems and Corrective Lenses
[Free Registration/Login may be required to access all resource tools.] Vision problems and how lenses can be used to correct them.
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Ck 12: Physical Science: Electric Conductors and Insulators
[Free Registration/Login may be required to access all resource tools.] Explores electrical conductors and insulators and the path of least resistance.
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Ck 12: Physical Science: Recognizing Chemical Reactions
[Free Registration/Login may be required to access all resource tools.] Signs that a chemical reaction has occurred.
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Ck 12: Physical Science: Discovery of Electromagnetism
[Free Registration/Login may be required to access all resource tools.] Covers the discovery of electromagnetism, how it relates to electricity, and Faraday's law.
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Ck 12: Physical Science: Conservation of Mass
[Free Registration/Login may be required to access all resource tools.] The law of conservation of mass and an example.
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Ck 12: Physical Science: Radioactive Decay
[Free Registration/Login may be required to access all resource tools.] What radioactive decay is and the three different types. How it changes one element to another and its dangers.
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Ck 12: Physical Science: Einstein's Concept of Gravity
[Free Registration/Login may be required to access all resource tools.] Explores Einstein's theory of gravity and the warping of space-time.
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Ck 12: Physical Science: Sources of Visible Light
[Free Registration/Login may be required to access all resource tools.] Definition of visible light and what incandescence, luminescence and illumination are and how they occur.
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Ck 12: Physical Science: Ions
[Free Registration/Login may be required to access all resource tools.] A learning tutorial about ions, how they form and their properties.