What Scientists Still Argue About: teacher key
Electric Eels, grade 11 edition, written for 11th grade. How strong is an electric eel's shock, and why is the eel not hurt by it? Eel scientists give measured numbers, and say where they still are not sure.
Read the book. Print this page for the key.
Questions and answers
- As of November 2026, what top voltages do sources give for electric eels?
- 6, 65, 80 and 86
- 1, 2, 3 and 4
- 600, 650, 800 and 860 (answer)
- Do scientists know why an eel is not hurt by its own shocks?
- Yes, it is settled
- No, they have ideas but are not sure (answer)
- Yes, it hides underwater
- In the leap, where does the current go?
- Out through the tail
- Into the mud
- From the chin straight into the target (answer)
- What may group hunting need, according to researchers?
- Plenty of prey and enough shelter (answer)
- Cold winters
- A single deep pool
- The two highland species split at about what time?
- When the first battery was built
- When the Amazon River took its modern path (answer)
- When Linnaeus wrote his book
- What did the fish treated with curare do when the eel sent out pulses?
- They did not twitch (answer)
- They twitched more
- They swam away
Words
- electrocytes: power cells
- shelter: hiding place
- conductor: metal object
- curare: nerve-blocking drug