DoodleScience
Centre of Mass
Explain how to find the center of mass of an object. A video uses suspension and plumb lines to find the point of intersection that is the center of mass. It also relates this concept to simple pendulums, covering the time period and...
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Total Internal Reflection
Demonstrate fiber optics and specifically how total internal reflection works. It covers the relationship between the angle of incidence and the critical angle, refraction, and the role of density. It concludes with other applications...
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Correcting Vision
A video explains the two most common vision problems, nearsightedness and farsightedness. It includes detail of what causes each and how they can be corrected using lenses and surgery.
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Eye vs Camera
An informative video begins with explaining the parts and functions of each part of the eye. Then, it makes a comparison to the way a camera works.
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Diverging Lenses
2016 was the first time viewers could watch the Olympics in virtual reality. The video discusses how diverging lenses are used to create virtual images using refracting light. It also explains how to use a ray diagram and identify the...
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Converging Lenses
Did you know your eyes can only focus to within about six inches in front of them? The video explains converging lenses, refraction, images, the difference in converging and diverging, focus, focal length, and ray diagrams.
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Ultrasound
Here is a resource that explains how ultrasound works by using sound waves. It examines such applications as its use in the detection of kidney stones and in prenatal care. A practice problem is also included.
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Refraction and Refractive Index
This video covers refraction and the refractive index, which is based on density. It also explains why the angle of refraction is different than the angle of incidence and how this knowledge is helpful when it comes to lenses.
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Life Cycle of Stars
Introduce your young astronomers to the life cycle of stars, from protostar to either white dwarf or black hole, with a short video that provides a brief overview of the process.
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Half-Life
What is half-life and how can decay be used to date items? Viewers find out in this video that details half-life and radioactive decay, as well as the difference between alpha and beta decay.
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Nuclear Radiation
Viewers learn about both natural and synthetic radiation in a video that discusses background radiation from cosmic rays, as well as from radioactive waste, radioactive fallout, and x-rays. It concludes with an explanation of alpha,...
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Atomic Structure
The Rutheford plum pudding model of an atom, as well as the nuclear model, are the subject of a video that also includes an explanation of protons, neutrons, electrons, nucleus, atomic mass, atomic charge, and ions.
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AC and DC supply
Malcolm and Angus Young developed an idea for a band's name after their sister, Margaret Young, saw the initials "AC/DC" on a sewing machine. Although this video is not about a famous rock band, it does explain alternating versus direct...
DoodleScience
Diodes, LEDs, Thermistors and LDRs
Why did the capacitor kiss the diode? He just couldn't resistor. LEDs, thermistors, and LDRs are the focus of this video that explains how diodes work in circuits based on the amount of resistance in different directions.
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Series and Parallel Circuits
Here's a video that explains the difference between series and parallel circuits, including the impacts of each on current and voltage.
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Charge, Current and Voltage
This brief video provides definitions for charge, current, and voltage and compares and contrasts these terms. The video also discusses coulomb, amps, and joules.
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Hazards of Radiation
Radiation hazards are the subject of a short video that also includes a comparison of alpha, beta, and gamma rays, and the hazards if people ingest or absorb these rays through the skin.
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Nuclear Fission and Fusion
Lab closed, gone fission! This video discusses both fission and fusion and their relationship to each other. In addition, it also explains why uranium, plutonium, and hydrogen are used and which process uses which elements.
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Calculating Power and Fuses
Watt is this video about? It explains how to calculate power when you know the energy and time, and continues by discussing fuses, currents, and electrical surges.
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Resistance
Want a quick explanation for how resistance works as an electric current flows through a wire? Then check out this video that covers electrons, conductors, ions, and the formula for resistance. It also graphs how voltage varies...
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Transformers and the National Grid
Understand the science behind the path electricity takes to our homes. The video shows how the role of transformers is important to the efficiency of the system.
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Electrical Appliances
Equip learners to shop smarter by learning how to assign a value to the amount of electrical energy appliances use. The video shows the calculations for finding both the kilowatt hours and joules of energy.
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Momentum
If you hit an object in the road when you're traveling at 60 mph, will it slow you down? Use the concept of momentum to explore this question. Make momentum calculations and predictions for velocity after collisions.
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Gravitational Potential and Kinetic Energy
What are the factors that affect the gravitational potential energy? Use the video to describe the process of calculating GPE and how it is converted to kinetic energy.