WAVES TEST - Coming up on Friday, December 18, 2009
Below you will find the standards for this unit. Under nearly every standard you will find some additional resources to help you practice that standard.
Your notebook and textbook should be your primary study source!
Work your way through each standard and each site, or just use the ones with which you are having the most trouble.
NOTE - Some sites may require the computer you are using to have Flash or Java or Shockwave. IF you get an error message about needing that software and you are given the option to download, go ahead and try, but be sure you have your parent's permission. None of these three programs is harmful. If loading Shockwave, Flash, or Java doesn't work, just move to the next site.
8-6.1 Recall that waves transmit energy but not matter
Interactive information about waves - Work through each page and consider taking notes. This website is English so some words and phrases may seem strange to you. The science content should not, however. After working through all of the screens, try the Test Bite.
8-6.2 Distinguish between mechanical and electromagnetic waves.
"A way to categorize waves is on the basis of the ability (or inability) to transmit energy through a vacuum (i.e., empty space). Categorizing waves on this basis leads to two groups: electromagnetic waves and mechanical waves.
An electromagnetic wave is a wave which is capable of transmitting its energy through a vacuum (i.e., empty space). Electromagnetic waves are produced by the vibration of electrons within atoms on the Sun's surface. These waves travel through the vacuum of outer space, subsequently reaching Earth. All light waves are examples of electromagnetic waves.
A mechanical wave is a wave which is not capable of transmitting its energy through a vacuum. Mechanical waves require a medium in order to transport their energy from one location to another. A sound wave is an example of a mechanical wave. Sound waves are incapable of traveling through a vacuum. Slinky waves, water waves, stadium waves, and earthquake waves are other examples of mechanical waves; each requires some medium in order to exist."
8-6.3 Summarize factors that influence the basic properties of waves including frequency, amplitude, wavelength, and speed.
Adjust the water waves under the boat (Click Wave Graphing) to see the relationship between frequency, amplitude, and wavelength.
This is a different boat activity. This time, be sure you click "particles" so that you can see that matter is not being transferred. Look for those relationships!
8-6.4 Summarize the behaviors of waves including refraction, reflection (Click "reflection" under visualizations), transmission, and absorption. (Note - You do not have to know terms such as angle of incidence and internal reflection.)
Light and sound comparison - This website is English so some words and phrases may seem strange to you. The science content should not, however. After working through all of the screens, try the Test Bite.
Using a flashlight to project a beam of light through two different mediums, experiment with reflection and refraction of the light.
This is targeted for much younger students, but it is an easy exercise in reflection.
How does visible light behave when it encounters specific objects?
refraction - rainbows
Refraction
of white or single colored light - also allows you to select from multiple
mediums ranging from a vacuum to a diamond.
8-6.5
Explain hearing in terms of the relationship between sound waves and the ear.
8-6.6 Explain sight in terms of the relationship between the eye and the light waves emitted or reflected by an object.
Explanation
of how the eyeball and all of its parts work
8-6.7 Explain how the absorption and reflection of light waves by various materials result in the human perception of color.
This web site deals with the mixing of light AND pigment.
You DON'T have to know this, but some of you asked. This site explains how your TV and computer monitor can make us think we see millions of colors with only three colors of light.
8-6.8 Compare the wavelength and energy of waves in various parts of the electromagnetic spectrum. Be sure to click on the names of each wavelength!
View the sun through each type of "light." Click on each image to learn more. This website allows you to do the same with but the images are larger (Click the "Sun at Different Wavelengths.)
Electromagnetic spectrum - more challenges from the Brits! Try the Test Bite at the end of the lesson.
Test yourself. Try to answer these challenging questions. You will have to UNDERSTAND how different waves of light work to answer each.