Author: comoscience
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Rhythm strips
Learning objectives: The basic anatomy of the heart The electrical system of the heart How an EKG is performed The basic shape of an EKG pattern Interpreting a rhythm Introduction This semester we have been looking at various phenomena that repeat. One of those phenomena is the contraction of the heart. The record of the…
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Strobe effects
Learning objectives: Understand how a strobe light works and how it can be used Understand why a strobe light makes it look like motion stops Use an oscilloscope to visualize a changing current Understand how the timer circuit we made previously can be used to detect lighting conditions Understand how the timer circuit can be…
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3/29/24 – Rock Bridge State Park
A Map of Rock Bridge State Park Rock Bridge State Park is bigger than many people realize. We hiked in part of the park that is less visited, but there are parts that are even less often visited. See if you can find the path we hiked. Here are places to find on the map:…
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Scientific Notation (Basic science review)
The most important things you need to know about Scientific Notation. Part of the Basic Science Review series.
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Greek letters we’ve used
Greek letters are commonly used in science. There are 24 Greek letters. Here are the ones we have discussed recently. Greek letter Name Uses α alpha alpha particles, indicates the first angle of a triangleopposite the side a β beta beta particles, indicates the second angle of a triangle opposite the side b γ gamma…
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Electromagnetic Spectrum (Basic science review)
The most important things you need to know about the electromagnetic spectrum. Part of the Basic Science Review series.
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Sound
Learning objectives: Understand the difference between longitudinal and transverse waves Know that frequency is measured in units called Hertz, which is abbreviated Hz, which represents the number of cycles/second. Know that humans can hear frequencies from about 20 Hz to 20,000 Hz. Understand that the amplitude of a sound wave determines how loud it is.…
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Amplitude & frequency
A discussion of amplitude and frequency using the motion of a spring and a pendulum as an example
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Timer circuit
Building a 555 timer circuit as an introduction to electronic circuits and using a breadboard.
