Asleep in Strange Places: teacher key

How Animals Sleep, grade 3 edition, written for 3rd grade. Dolphins sleep with half a brain, seals nap on deep dives and fish slow down to rest. Find out how animals really sleep.

Read the book. Print this page for the key.

Questions and answers

1. Which animal sleeps with one half of its brain at a time?
   • A dolphin (answer)
   • A horse
   • A bat
2. What happens to a sleeping fish?
   • It speeds up
   • It slows down and its gills pump less (answer)
   • It floats to the top
3. How does an elephant seal nap on a deep dive?
   • With short naps while holding its breath (answer)
   • On the beach
   • Upside down
4. What do fruit flies and jellyfish show about sleep?
   • Fruit flies and jellyfish rest, too (answer)
   • Only dogs dream
   • Bats sleep a lot
5. What does torpor mean here?
   • A deep rest (answer)
   • A bubble
   • A dive

Words

• torpor: deep rest
• metabolism: body's energy use
• kelp: sea plant
• gills: fish breathing parts