Curated OER
Ultraviolet Light
A few slides at the beginning of the presentation give the definition of ultraviolet light and some important dates in its research. The role of ozone in protecting Earth from excessive radiation is mentioned. Practical applications of...
Curated OER
Physics and the Quantum Mechanical Model
In this physics activity, students review vocabulary terms and key equations associated with the quantum mechanical model. Students apply the quantum theory to explain the photoelectric effect. This activity has 5 true or false, 12...
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Simulation of Irradiation
In this irradiation learning exercise, students simulate the effects of irradiation on bacteria growth by using UV light. Then students complete 6 short answer questions.
Curated OER
Generate a Calibration Curve for Chlorophyll a
Students measure and graph the absorbance of light by chlorophyll at a specific wavelength versus chlorophyll concentration. They are given an unknown and determine its concentration from their calibration curve. Students become familiar...
Curated OER
Waves, Sound, and Light
Ninth graders explain waves in terms of energy transfer and describe their basic types and characteristics. They solve mathematical problems involving wavelength and frequency. Students conduct experiments in reflection and refraction.