What the Investigators Found: teacher key

Aliens and UFOs, grade 9 edition, written for 9th grade. From Project Blue Book to the Roswell debris to a Pentagon office today, investigators have checked reports of strange objects in the sky for decades. Many were matched to plain causes, and some stay unidentified.

Read the book. Print this page for the key.

Questions and answers

1. What does UFO stand for?
   • Unknown fast orbit
   • Unusual flying organism
   • Unidentified flying object (answer)
2. How did Project Blue Book classify each report?
   • Only as true or false
   • Identified with an astronomical, atmospheric or human-made cause, or unidentified (answer)
   • As a threat or not a threat
3. In 1994 the Air Force said the Roswell debris came from what?
   • A weather balloon only
   • A crashed airplane from 1956
   • Project Mogul, a secret balloon project (answer)
4. Why might a Blue Book report stay unidentified?
   • Some had too little information to match a known phenomenon (answer)
   • All of them came from space
   • Nobody looked at them
5. What does AARO say makes a report most useful?
   • A drawing of the shape
   • Recorded, time-stamped data with locations for both observer and object (answer)
   • A long written story
6. What does classified mean?
   • Kinds of balloons
   • Radar echoes
   • Kept secret (answer)

Words

• unidentified: not yet named
• biosignature: possible life sign
• inversions: layered air
• classified: kept secret