This video narrated by Paul Andersen explains how the charge distribution can be affected my electric forces produced by a charged object. In an insulator charges are fixed but in conductors the charges can move. Induction occurs when the charges in an object influence charges in another object. [8:37]

Paul Andersen explains how electric charge is quantized and how the smallest unit of charge is 1.6x10^-19 C, or the elementary charge. [4:51]

In this video Paul Andersen explains that elementary reactions are steps within a larger reaction mechanism. Colliding molecules require sufficient energy and proper orientation to break bonds and form new bonds. A unimolecular reaction mechanism requires one type of reactant and is a first-order reaction. Enhance learning with the additional resources. [6:13]

In the following video Paul Andersen explains how the photons emitted from or absorbed by an atom or nuclei is directly related to electrons moving between energy level. Absorption and emission are a direct result of the conservation of energy. [5:18]

Paul Andersen explains the major elements in the endocrine system. He explains how glands produce hormones which target cells. He differentiates between water-soluble and lipid-soluble hormones. He then describes the hormones and actions of ten glands: pineal, anterior pituitary, posterior pituitary, thyroid, parathyroid, pancreas, adrenal cortex, adrenal medulla, testes, and ovaries. [13:46]

In this video Paul Andersen explains how energy can enter and leave a system. The amount of energy a substance can receive through heating or lose through cooling is measured using the specific heat capacity. Take in the additional concept map, slideshow, and simulation. [8:19]

Paul Andersen explains the different forms and units for energy. A discussion of the laws of thermodynamics is also included. Sample conversion problems using dimensional analysis is also included. Utilize the practice problems and concept map. [8:53]

Paul Andersen explains how humans have consumed energy through history and may consume energy in the future. Sources of energy have included food, animals, wood, wind, coal, oil, and natural gas. However non-renewable energy source eventually lead to an energy crisis as supplies go down or prices go up. [7:51]

Explains how energy flows in ecosystems. Energy enters via producers through photosynthesis or chemosynthesis. Producers and consumers release the energy from food through cellular respiration. An explanation of gross primary productivity and net primary productivity are included. [7:46]

Paul Andersen explains how the law of conservation of energy applies to both energy and mass. Einstein showed that mass and energy are equivalent and that the amount of energy contained within matter can be calculated using the famous equation E=mc^2. [5:22]

In the following video Paul Andersen explains how energy can be transferred from one system to another. In a closed system the energy can be transferred as either work or heat. Thermal energy transfer is know as energy transfer through heat. During energy transfer the energy of the entire system is conserved. [4:49]

Mr. Andersen defines the terms energy, work, and power. He also uses a simple example to calculate both work and power. [3:34]

Paul Andersen outlines the AP Environmental Science course through a video, concept map, and slideshow. He explains how environmental science studies the interaction between earth and human systems. A planetary boundary model is used to explain the importance of sustainability. The importance of science practices and knowledge of the APES format is also included. [9:08]

Paul Andersen explains how matter and energy are conserved within the Earth's system. Matter is a closed system and energy is open to the surroundings. In natural systems steady state is maintained through feedback loops but can be affected by human society. Make sure to utilize the associated concept map, slideshow and additional videos. [9:39]

Paul Andersen explains how acid-base chemistry can be understood in terms of equilibrium. Water is present in all acid-base chemistry and is amphoteric in nature. The Ka and Kb values can be used to determine the strength of an acid or a base. Titrations can be used to student neutralization reactions between strong and weak acids and bases. [10:27]

A video reviewing over how forces are pushes or pulls on an object. Learn how forces can be determined by measuring the motion of an object. Also, how an objects acceleration can show that a force is present. [5:47]

Paul Andersen explains how fossil fuels are formed when organic material is heating and squeezed in an anaerobic environment. Formation, extraction, advantages, and disadvantages are discussed for coal, petroleum and natural gas. [7:57]

In the following video Paul Andersen explains how the gas pressure is the force applied over the area of the container. It is also the change in momentum as gas molecules interact with the container and is uniform throughout the sample. Several problems including pressure, force and area are included. [5:39]

Paul Andersen explains how rock is formed and changed on the planet. The video begins with a brief description of rocks, minerals, and the rock cycle. Plate tectonics is used to describe structure near plate boundaries. Hot spots and natural hazards (like volcanos, earthquake, and tsunamis) are included. Find the associated map and slideshow. [11:04]