CyberHunt: Digging for Dinosaurs
- Grades: PreK–K, 1–2, 3–5, 6–8
REPRODUCIBLE ANSWER GUIDE
1. Dinosaurs lived on Earth for about 165 million years. They became extinct around 65 million years ago.
2. 2. A fossil—often a bone, a shell, or the imprint of a leaf—is the remains of an animal or plant that lived long ago. Over many years, the bone or other remains harden into rock.
3. Discovered in November 2000, the Saltriosaur was a meat-eating dinosaur, 28-feet long, weighing over a ton.
4. You built a Deinonychus!
5. Argentinosaurus huinculensis was the largest dinosaur; it was between 115- and 130-feet long, and ate plants.
6. Three of the following: Tyrannosaurus, Ankylosaurus, Anatotitan, Torosaurus, Didelphodon, or Quetzalcoatlus.
7. Here are five possible reasons for the extinction of dinosaurs: giant asteroid impact, supernova, orbital changes, volcanic eruption, or disease.
8. 1C, 2A, 3B
9. Answers will vary. Display your students' work on a "Dinosaur Encyclopedia wall" in your classroom!
CYBERHUNT SAFETY: All of the Web sites contained in the CyberHunt and these extension activities have been reviewed by Instructor staff. At press time, all links are safe and consist of educational material. However, we are unable to control transfers or purchases of URLs after publication. We strongly urge teachers to review all Web sites before sharing them with students.
These activities will work best with Microsoft Internet Explorer 4.0, Netscape 4.0, or newer versions. Older browsers may experience difficulties with some links.
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