Science

  • What are Molecules?

    Molecules are made up of two or more atoms, such as hydrogen and oxygen to make water, or sodium and chloride to make salt. Discover how molecules are formed with… Read More

  • What are Electrons?

    The electrons of an atom represent the energy levels, and there are usually as many protons as there are electrons. Understand how each level carries a prescribed number of electrons… Read More

  • Transfer of Matter

    The transfer of matter refers to the changing states of matter, such as evaporation and condensation. Find out how matter can completely change and move with important facts from a… Read More

  • Atomic Symbols

    Atomic symbols consist of a letter abbreviation for the element and coordinating numbers. Identify elemental symbols with important facts from a science teacher in this free video on fundamental physics. Read More

  • The Periodic Table

    The periodic table is a way to organize the elements that create the chemicals that form every physical thing in the world. Understand how the periodic table is organized with… Read More

  • The Water Cycle

    The water cycle illustrates evaporation and condensation as it occurs around the world to recycle the planet's water. Learn about the the earth's water usage with important facts from a… Read More

  • What Is Information Technology?

    Information technology, known as IT, refers to the study, design, development, implementation, support and management of computer-based knowledge. Discover the world of the IT industry, and learn about the services… Read More

  • History of Genetic Engineering

    The history of genetic engineering began in 1953 when James Watson discovered the structure of DNA, after which scientists were able to understand and alter that structure. Find out how… Read More

  • Chemistry Ph Test for Acids & Bases: Adding Solution Drops

    When adding drops of a Ph solution in a chemistry experiment to test for acids and bases, wait for drops to dissolve before analyzing the color. Learn how to add… Read More

  • Chemistry Ph Test for Acids & Bases: What Colors Indicate

    When performing a chemistry experiment to test the acidity level of household substances, a red solution indicates the presence of acid, a yellowish or greenish solution the presence of a… Read More

  • About Solar Energy

    Solar energy is a renewable energy that comes from silicon chips which come from silicon dioxide, a substance found in all rocks. Find out how electric currents come out of… Read More

  • How Do Windmills Work?

    Windmills work by having blades that move and cause a rotating generator to form electricity. Discover how windmills have changed since the days of windmills that pumped water with information… Read More

  • How Does Optical Fiber Work?

    Optical fibers are solid glass that produce continuous reflections down the light fiber that come out the other end. Find out how a bundle of optical fibers can be used… Read More

  • What Is Biotechnology?

    Biotechnology uses living systems and organisms to develop or make processes, and it is usually seen in agriculture, food production and medicine production. Discover how biotechnology has been used to… Read More

  • What Organs Are in the Lower Left Quadrant?

    The lower left quadrant of the human body holds several major organs, including the small intestine, the colon, the left ureter and several parts of the female reproductive system. Learn… Read More

  • How Do Weather Vanes Work?

    Weather vanes have arrows that point in the direction that wind is coming from, and this is achieved through differing surface areas on either side of the arrow. Discover how… Read More

  • Calculating Ratios

    When calculating ratios, think of it as finding out how much of a total is in one place and how much of the total is in another place. Discover how… Read More

  • How to Make an Electric Motor Produce Electricity

    An electric motor is also a generator, and it possesses two major components, which are a coil and a pair of field magnets. Discover how to take the current out… Read More

  • How to Change the Rotation of an Electric Motor

    In order to change the rotation of an electric motor, change the direction of the motor by changing the direction of the current, or magnets. Make an electric motor rotate… Read More

  • Negative Effects of Technology

    When discussing the negative effects of technology, people often bring up the fact that communication commonly occurs between individuals and machines, and not other people. Learn about the pollution caused… Read More

  • What Is Radon?

    Radon is one of a group of gases called inert gases, and it is naturally radioactive. Learn more about radon, the heaviest of the inert gases, with help from a… Read More

  • What Is the Carbon Cycle?

    The carbon cycle involves trees absorbing carbon dioxide and emitting oxygen to keep the atmosphere balanced. Learn about the recent increase of carbon dioxide in the atmosphere with help from… Read More

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