A Shark at Home in Rivers: teacher key

Bull Sharks, grade 4 edition, written for 4th grade. Bull sharks swim in the sea and far up rivers. Read how they live, grow and eat.

Read the book. Print this page for the key.

Questions and answers

What does it mean that bull sharks are opportunistic hunters?
- They eat many different kinds of prey (answer)
- They only eat one fish
- They never hunt
How long does a mother bull shark carry her pups?
- 2 days
- 10 to 11 months (answer)
- 5 years
Which river have bull sharks been reported 2,000 miles up?
- A creek
- The Nile
- The Amazon (answer)
Which is bigger, a female or a male bull shark?
- A female (answer)
- A male
- They are always equal
Why can a bull shark be found in a river?
- It cannot swim
- It can swim in fresh water as well as in the sea (answer)
- It walks
What does estuaries mean here?
- Dry deserts
- Deep caves
- River mouths (answer)