Worksheet - http://www.hazelwood.k12.mo.us/~grichert/sciweb/mootion.htmGravity Activity
Applet - http://jersey.uoregon.edu/vlab/block/Block.html
Activity page - http://www.sciencenetlinks.com/Esheet.cfm?DocID=96Finding the Gravity Constant
Making the Modern World - http://www.makingthemodernworld.org.uk/learning_modules/maths/06.TU.02/?section=6Waves
VisionLearning - http://www.visionlearning.com/library/module_viewer.php?mid=118
The Cavendish Experiment - http://www.leydenscience.org/physics/gravitation/cavend.htm
Physics in Context - Chapter 8 Waves and Vibrations - http://www.learningincontext.com/PiC-Web/chapt08.htm
Doppler Effect
http://www.walter-fendt.de/ph11e/dopplereff.htm
http://www.fearofphysics.com/Sound/doppler.html
http://www.kettering.edu/~drussell/Demos/doppler/doppler.html
Sonic Boom
http://www.sky-flash.com/boom.htm
http://www.pbs.org/wgbh/nova/barrier/boom/concept3.html
http://antwrp.gsfc.nasa.gov/apod/ap010221.html
Electromagnetic Spectrum
http://www.darvill.clara.net/emag/How We See
The Eye - http://faculty.washington.edu/chudler/bigeye.html
Primary and Secondary Colors - http://micro.magnet.fsu.edu/optics/lightandcolor/primary.html
States
of Matter
http://www.harcourtschool.com/activity/states_of_matter/
http://chair.pa.msu.edu/applets/labs/labphase/lab.htm
http://www.bbc.co.uk/schools/scienceclips/ages/9_10/changing_state.shtml
Batteries