How Scientists Check a Monster: teacher key

Bigfoot and the Loch Ness Monster, grade 4 edition, written for 4th grade. Reports of Bigfoot and Nessie come with footprints, photos and stories. See how people check them with tests, DNA and sonar.

Read the book. Print this page for the key.

Questions and answers

1. What did experts at the Natural History Museum say about the 1933 footprints?
   • They were made with a hippo-foot umbrella stand or ashtray (answer)
   • They came from a plesiosaur
   • They came from a bear
2. What is sonar used for?
   • Taking pictures of shy animals
   • Finding things under water with sound (answer)
   • Reading DNA
3. What did the 2018 team collect from Loch Ness?
   • Footprints
   • Photos
   • More than 250 water samples (answer)
4. Why is a sighting not an answer by itself?
   • It could be waves, logs, animals or other things (answer)
   • It is always a hoax
   • It only happens at night
5. What does "hoax" mean?
   • A kind of lake
   • A trick that fools people (answer)
   • A kind of camera

Words

• sonar: sound finder
• DNA: body code
• hoax: a trick
• sighting: seeing report
• plesiosaur: sea reptile