Physical Principles in Living Systems
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6.Physical principles underlie biological structures and functions. As a basis for understanding this concept:
Physical Principles in living systems (physical science)
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a.Students know visible light is a small band within a very broad electromagnetic spectrum.
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b.Students know that for an object to be seen, light emitted by or scattered from it must be detected by the eye.
c. Students know light travels in straight lines if the medium it travels through does not change
d. Students know how simple lenses are used in a magnifying glass, the eye, a camera, a telescope, and a microscope.
e. Students know that white light is a mixture of many wavelengths (colors) and that retinal cells react differently to different wavelengths.
f. Students know light can be reflected, refracted, transmitted, and absorbed by matter.
g. Students know the angle of reflection of a light beam is equal to the angle of incidence.
h. Students know how to compare joints in the body (wrist, shoulder, thigh) with structures used in machines and simple devices (hinge, ball-and-socket, and sliding joints).
i. Students know how levers confer mechanical advantage and how the application of this principle applies to the musculoskeletal system.
j. Students know that contractions of the heart generate blood pressure and that heart valves prevent backflow of blood in the circulatory system.
A Google-like wiki* with a handful of links to QUALITY websites, lessons, experiments and activities about Light, Optics, and Lenses for your middle school students. There are also sections which directly address Background Information for Teachers.
This is how Middle School Portal: Light, Optics, and Lenses describes its self:
“Background Information for Teachers:
You may be aware that light exhibits both wave properties and discrete particle properties. The resources in this section explore and explain what is meant by these properties. It then is easier to understand why, in the context of most familiar optical devices, we can conceptualize light as rays.
The resources in Background Information for Teachers include articles, photographs, illustrations, and simulations, some of which are interactive, that will fortify your content knowledge and support you through the instructional unit. The lessons on the nature of light and optical devices include hands-on, minds-on, and virtual activities. The National Science Education Standards section highlights the various standards that are addressed in these lessons and activities, including the history and nature of science, science and technology, science as inquiry, and of course physical science.”
Contents”
1 Light, Optics and Lenses - Introduction, 2 Background Information for Teachers, 3 Lessons on the Nature of Light, 4 Lessons on Optical Devices, 5 National Science Education Standards, 6 Author and Copyright
-Free, no ads, from Mary LeFever a resource specialist for the Middle School Portal 2: Math & Science Pathways project, The Ohio State University, supported by the National Science Foundation
Middle School Portal: Light, Optics, and Lenses
*TECH WORDS:
wiki |ˈwikē|
noun
- a Web site that allows collaborative editing of its content and structure by its users.
ORIGIN coined by programmer Ward Cunningham (1949- ), from Hawaiian wiki-wiki ‘quick-quick.’
- OED
