Video+Clip+D


 * Clip D: Space Shuttle Challenger Disaster[[image:space shuttle.jpg width="240" height="214" align="right"]] **


 * A. Vocabulary **

Before watching the video, use a dictionary or other source to ensure that you understand the meaning of all the vocabulary words in the box. All of these words are used in the video.

shuttle, solid, inspire, shatter, sorrow rage, cause, rocket, motor, puff (of smoke) fuel tank, ignite, spectacular, white hot, flare explosion, blow-torch, rubber, NASA, join/joint launch, launch pad, o-ring, contractor, evidence tragic/tragedy, fail, degrees, Fahrenheit, risk destroy/destroyed, dismiss/dismissed, “push the envelope”

or follow this link if you have a problem watching it on this site >> @http://youtu.be/lMYQ_UyGukE media type="file" key="Space Shuttle Challenger Disaster.wmv" width="300" height="300"
 * B. Now watch the video as many times as you need in order to understand it. **


 * C. After watching the video, think about the answers to the following questions: **
 * 1) What date did the Challenger disaster happen on?
 * 2) What part of the shuttle failed?
 * 3) Why did it fail?
 * 4) What was the critical temperature threshold for the part that failed?
 * 5) What was the temperature on the day of the launch?
 * 6) Why did NASA engineers think that they could launch successfully in cold weather?