Different colors of the spectrum travel at different speeds through media, causing them to refract at different angles—which allows humans to see their colors. Through a simulation, pupils see how air, water, and other media bend light....

Why did the waves get into a fight? They were tired of each other's interference. Scholars observe the wave patterns from dripping water, sound waves, and light waves. They vary the spacing, build barriers, and increase the number...

A single slide introduces each of the following renewable energy sources: hydroelectric, wind, geothermal, solar, tidal, and biomass. This provides a succinct overview that you can use as a visual aid when you first introduce alternative...

A red delicious apple tree with a simple mutation means we now benefit from the existence of golden delicious apples. Learn how simple mutations change genetic information in DNA sequences. Using biographies, videos, and animations,...

Does natural light damage or repair DNA? Learn the answer discover the scientists who researched the topic with an online interactive. Scholars read through an online animation presenting the content at their own pace. Then, they read...

Set to upbeat instrumental background music, eight slides present pictures of electrical wires, batteries, and appliances, Each slide is accompanied by a few sentences that introduce viewers to concepts related to current electricity....

Electricity travels at the speed of light, 186,000 miles per second. Through a simulation, classes see how the structure of energy bands in crystals of atoms determines how materials conduct electricity. Participants can change the...

In this ohmmeter worksheet, students are given ten questions about circuits and and the resistance in those circuits. They explain how an ohmmeter is used and answer questions about different wire systems and their resistance.

In this AC waveforms activity, learners answer ten questions about AC voltage, frequencies of waveforms and they interpret diagrams of AC voltage.

In this circuits worksheet, students answer 24 questions about parallel DC circuits including finding the current drawn by resistors, the total resistance, and the voltage impressed across each resistor in the circuit. Students also...

In this ammeter learning exercise, learners answer eleven questions about ammeters, multimeters and types of circuits. They identify different types of circuits given schematic diagrams.

In this circuits worksheet, students are given 15 different scenarios to troubleshoot using the scientific method. Topics include electrical lights, "network" power cabling, gas pipelines and stereo systems.

Examine how multiple light sources produce shadows of differing darkness and length. Move a player (with four light sources) around the field until your image matches the five other images on the page so you can identify where the player...

Apply the Schwarzschild metric to the paths light travels when it radiates in every direction near a black hole. Adjust the position of the light source and observe the effective potential of the paths.

Manipulate variables in order to observe the effects of relative motion on events such as an explosion and the time at which its light signal reaches a destination.

Using the Schwarzchild metric this simulates the path of light from a black hole also identifying specific time and angle of the light.

A model for examining the simultaneity of two events where the relative velocity and the wave source, either light or sound, can be manipulated.

Visualization using the Schwarzschild metric, showing the path light travels near a black hole. Adjust the impact parameter and observe effective potential well of the light particle.

Experience the photoelectric effect by choosing different light frequency, voltage, and metals to stop current from flowing in a circuit.

Let this classic family of monsters guide you as you learn about energy. Interactive exercises, experiments, and demonstrations help to build knowledge and raise questions.