1 / 24

Light

Light. Stop Faking It!. Strand: Force, Motion, and Energy. SOL 5.3 The student will investigate and understand basic characteristics of white light. Key concepts include: The visible spectrum, light waves, reflection, refraction, diffraction, opaque, transparent, translucent;

Download Presentation

Light

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Light Stop Faking It!

  2. Strand: Force, Motion, and Energy • SOL 5.3 The student will investigate and understand basic characteristics of white light. Key concepts include: • The visible spectrum, light waves, reflection, refraction, diffraction, opaque, transparent, translucent; • Optical tools (eyeglasses, lenses, flashlight, camera, kaleidoscope, binoculars, microscope light boxes, telescope, prism, spectroscope, mirrors); and • Historical contributions in light

  3. Essential Knowledge, Skills, and Processes • Explain the relationships between wavelength and the color of light. Name the colors of the visible spectrum. • ROYGBIV

  4. Vocabulary • Visible spectrum (visible light): a combination of several different wavelengths of light traveling together. It is part of the Electromagnetic Spectrum.

  5. Essential Knowledge, Skills, and Processes • Diagram and label a representation of a light wave (wavelength, peak, trough)

  6. Vocabulary • Waves: a disturbance which carries energy and that travels away from the starting point. • Wavelength: the distance between one crest of a wave and the next crest (distance between compressions); red is longest and violet is shortest • Peak: the highest point of a light wave • Trough: the lowest point of a light wave • Frequency: the number of waves (light or sound) produced in a given unit of time, such as a second

  7. Essential Knowledge, Skills, and Processes • Compare and contrast reflection and refraction Reflection Refraction

  8. Vocabulary • Reflection: the bouncing of light from a surface • Refraction: the bending of light as it passes through one material to another

  9. Essential Knowledge, Skills, and Processes • Design an investigation to determine what happens to light as it passes through a convex lens. Describe the results. A convex lens causes light to converge, or focus, producing an image that is smaller than the original object.

  10. Essential Knowledge, Skills, and Processes • Design an investigation to determine what happens to light as it passes through a concave lens. Describe the results. A concave lens causes light to diverge, or spread out, producing a larger image than the original.

  11. Essential Knowledge, Skills, and Processes • Identify some common optical tools, and describe whether each has lenses, mirrors, and/or prisms in it. These should include: • eyeglasses • flashlights • cameras • binoculars • microscopes

  12. No correction needed a. Normal eye Corrected with concave lens b. Myopia (nearsightedness) c. Hyperopia (farsightedness) Corrected with convex lens Essential Knowledge, Skills, and Processes • Eyeglasses: have lenses

  13. Essential Knowledge, Skills, and Processes • Flashlight: has lenses and a mirror

  14. Essential Knowledge, Skills, and Processes • Cameras: have lenses, mirrors, and a prism

  15. Essential Knowledge, Skills, and Processes • Binoculars: have lenses and prisms

  16. Essential Knowledge, Skills, and Processes • Microscope: has lenses

  17. Essential Knowledge, Skills, and Processes • Explain the terms transparent, translucent, and opaque, and give an example of each. Plastic wrap Wax paper Aluminum Foil Transparent Translucent Opaque

  18. Vocabulary • Transparent: materials that allow all light to pass through • Translucent: letting light through but scattering it • Opaque: materials that do not let light through • Transmit: to send (as in sound or light). It also means light passing through an object.

  19. Essential Knowledge, Skills, and Processes • Analyze the effects of a prism on white light and describe why this occurs. Explain why a rainbow occurs.

  20. Essential Knowledge, Skills, and Processes • Describe the contributions of these scientists in creating and using optical tools: • Galileo Galilei • Robert Hooke • Anton van Leeuwenhoek • Isaac Newton

  21. Galileo Galilei • Italian • Lived from 1564-1642 • Developed the refracting telescope • Developed the first known example of the microscope

  22. Robert Hooke • English • Lived from 1635-1703 • Devised the compound microscope and illumination system • Discovered plant cells • Examined fossils with a microscope

  23. Anton van Leeuwenhoek • Dutch; born in Holland • Lived 1632-1723 • Made over 500 simple microscopes • Discovered bacteria, free-living and parasitic microscopic protists

  24. Isaac Newton • English • Lived from 1643-1727 • Discovered that white light was not a simple entity, but splits into a range of colors • When he passed white light through a glass prism, he noted that a spectrum of light was formed; particle theory of light • Reflecting telescope

More Related