# CK-12 Physics Concepts - Intermediate

**At Grade**Created by: CK-12

- 1.
## Introduction to Physics

Introduces physics, the scientific method, measurement, and mathematics in physics.

- 2.
## Motion in a Straight Line

Covers one-dimensional kinematics including position, velocity, and acceleration.

- 3.
## Forces

Explains Newton's Laws of Motion and presents problems of force including friction.

- 4.
## Vectors

Covers vector mathematics used for two- and three-dimensional problems.

- 5.
## Motion in Two Dimensions

Provides an overview of projectile, circular, and simple harmonic motion.

- 6.
## Universal Gravitation

Presents Kepler's Laws of Planetary Motion and Newton's Law of Universal Gravitation.

- 7.
## Momentum

Covers impulse, momentum, and conservation of momentum in one and two dimensions.

- 8.
## Work, Power, and Simple Machines

Explains work, power, and the relationship between the two; illustrates the six simple machines.

- 9.
## Energy

Introduces different forms of energy and energy conservation.

- 10.
## Thermal Energy

Describes heat, temperature, and thermal energy transfer.

- 11.
## The Fluid States

Describes the characteristics of fluids and explains the Universal and Combined Gas Laws.

- 12.
## Waves and Energy Transfer

Introduces transverse and longitudinal waves and illustrates wave phenomena such as the Doppler Effect.

- 13.
## Light

Presents the characteristics of light including reflection and refraction.

- 14.
## Geometric Optics

Explains the geometry of concave and convex mirrors and lenses using the mathematical ray model for light.

- 15.
## Diffraction and Interference of Light

Uses the wave model of light to introduce the concept of wave interference.

- 16.
## Static Electricity

Covers the basic properties of electrical interaction and introduces Coulomb's Law to explain the force between charged particles.

- 17.
## Electric Fields

Explains the existence of electric fields and electric potential, and introduces the capacitor.

- 18.
## Current Electricity

Covers the flow of electricity and energy consumption in circuits with resistors.

- 19.
## Electrical Circuits

Explains the mathematical procedures for analyzing circuits that have resistors in series, parallel, or a combination of the two.

- 20.
## Magnetic Fields

Covers the properties of magnets and the relationship between electric current and magnetic fields fundamental to the function of electric motors.

- 21.
## Electromagnetic Induction

Explains the electromotive force, electric generators, Lenz's Law, and the function and mathematics of transformers.

- 22.
## The Nucleus

Explains phenomena at the atomic level, such as radioactivity, nuclear reactions, and quarks.

- 23.
## The Atom

Covers the development of Bohr's model of the atom and the change to the quantum mechanical model.

- 24.
## Astrophysics

Gives a brief history of astronomy and explains classification and the life cycle of stars.

- 25.
## Relativity

Explains Einstein's Theories of Special and General Relativity.