By Bill Kirk
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Extra info for All About Volcanoes
Check out more about animals such as alligators that use their teeth not to chew with but to hold and kill their prey. < previous page page_35 next page > < previous page page_36 next page > Page 36 9 Warm-Blooded Problem How is water used to lower an animal's body temperature? Materials masking tape marking pen 2 clear glasses water 2 thermometers 1 bowl freezer Procedure 1. Use the masking tape and marking pen to label the glasses #1 and #2. 2. Fill both glasses one-half full with warm water from a faucet.
3. Stand the second thermometer in an empty paper cup.
Let's Explore 1. Would the size of the pebble swallowed by the bird affect the way its gizzard will grind the food? Repeat the experiment using stones larger than aquarium gravel. 2. Can a seed in its shell pass through a bird's digestive system without being broken? Repeat the experiment without breaking the shells open. Show Time! 1. How do animals without gizzards or teeth grind their food? Some, like baleen whales, do not grind their food at all. The food is swallowed, and enters the stomach < previous page page_34 next page > < previous page page_35 next page > Page 35 where it is slowly digested.
All About Volcanoes by Bill Kirk