The links on this page will take you to locations outside of the McGraw-Hill Ryerson site family. These links will be in a new browser window; to return to this page, please close the outside link.

The History of Speed
http://www.pbs.org/milkyway/

Throughout our history, we have developed our ability to travel more and more quickly. It may well be that human technology will approach the speed of light sometime within the next few centuries. Select A History of Speed for facts and predictions.

The Way to Go in Space
http://lifesci3.arc.nasa.gov/SpaceSettlement/teacher/lessons/contributed/thomas/Adv.prop/advpro
p.html

Read about ways to travel into space at this NASA site. Find out about solar sails, nuclear rockets, and many other forms of speedy space transportation.

Other Great Web Sites for Chapter 9

Explore Science
http://www.explorescience.com/

This site, winner of the eLearning Innovation award, contains numerous interactive activities for both students and educators. Choose from a Activities by Category or the Full Listing.

Measurement Matters! Did You Know?
http://mars.jpl.nasa.gov/msp98/news/mco990930.html

The Mars Polar Lander was lost due to measurement confusion between companies that were responsible for different aspects of the mission. One team used inches, feet, and pounds, while the other used metric. Find out more from this NASA site.

Women Inventors
http://www.interlog.com/~womenip/

Which everyday devices have been brought to us by the innovative minds of women? The Women Inventors Project has information on many women inventors and their inventions, as well as suggestions for further reading and other contacts. The Project's mission is to support the innovative and scientific endeavours of Canadian women.

The Physics Classroom: Describing Motion with Words Scalars and Vectors
http://www.glenbrook.k12.il.us/gbssci/phys/Class/1DKin/U1L1b.html

The motion of objects can be described by words - words such as distance, displacement, speed, velocity, and acceleration. Find out more about scalars and vectors here. Just as distance and displacement have distinctly different meanings, so do speed and velocity. Speed is a scalar quantity while velocity is a vector quantity.

Interactive Vector Addition
http://www.explorescience.com/activities/Activity_page.cfm?ActivityID=15

An excellent site that permits online manipulation of vectors, showing the results in real time. (No math necessary, but Shockwave is required.)

The Physics Classroom: Vectors - Fundamentals and Operations
http://www.glenbrook.k12.il.us/gbssci/phys/Class/vectors/u3l1a.html

The emphasis of this site is to illustrate some fundamentals about vectors and to apply the fundamentals in order to better understand motion.