By Robert Gardner
Can you construct a fowl feeder that retains squirrels out? the place do earthworms prefer to reside? Does colour impact human feelings? examine the solutions to those questions and extra with the thrill experiments during this ebook. younger scientists will detect and discover behaviors of animals' interactions with environments. Many experiments contain rules you should use to your technology reasonable.
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Extra info for Ace Your Animal Science Project
Since spider web material is transparent, increase the contrast by closing the disc or iris diaphragm. Compare your observations to Figure 10. Can you determine which parts of the coiling line are sticky and which are elastic and stretch? Wherever a spider goes, it spins a silk thread behind itself. This thread is called a dragline. Dragline silk is one of the toughest natural materials known to man. Collect dragline silk and make a wet mount of it. Compare dragline silk to the “dry” and “sticky” silk in an orb weaver’s web.
T. Emlen did a field experiment with cliff swallows. These birds use mud to build nests under cliffs and the eaves of buildings. Unlike most birds, which defend a wide territory around their nests, cliff swallows build their nests next to one another in colonies, as shown in Figure 11. Emlen wondered whether these birds would defend their nests. Because the swallows looked so much alike, Emlen had to find a way to identify them in his experiment. He crept up close to the colony he was observing.
If you decide to use a project found in this book for a science fair, you will need to find ways to modify or extend it. This should not be difficult because you will probably find that as you do these projects new ideas for experiments will come to mind. These new experiments could make excellent science fair projects, particularly because they spring from your own mind and are interesting to you. If you decide to enter a science fair and have never done so before, you should read some of the books listed in the Further Reading section.