Warm Sun, Cool Water: teacher key

Nile Crocodiles, grade 5 edition, written for 5th grade. Follow a Nile crocodile from nest to river. Learn how it lives in sun and water, what it eats, and how long it lives.

Read the book. Print this page for the key.

Questions and answers

1. What decides whether a crocodile's babies are female or male?
   • The nest temperature (answer)
   • The size of the river
   • The kind of fish
2. What does a crocodile move to swim?
   • Its tail (answer)
   • Its eyes
   • Its tooth
3. How does a crocodile warm up and cool down?
   • It moves between sun and shade or land and water (answer)
   • It runs in circles
   • It hides in its nest
4. About how long does a Nile crocodile live in the wild, on average?
   • About 5 years
   • About 45 years (answer)
   • About 200 years
5. Why can a big crocodile go a long time without food?
   • Its tail stores fat (answer)
   • It sleeps in the nest
   • It drinks river water
6. What does hatch mean?
   • Dig a hole
   • Come from eggs (answer)
   • Lay an egg

Words

• basks: sits in sun
• hatch: come from eggs
• mangrove: coastal tree swamp