Animal Ears Lab

1. As a class, we were assigned to do a lab to determine the distance of hearing with normal ears and enhanced ears. Our enhanced ears were plates with slits cut on the edges, that way they could sit on top of our ears.
2. The first trial was seeing how far we could walk, with normal ears, until we couldn't hear the pen clicking anymore. The second trial was seeing how far we could walk, with enhanced ears, until we couldn't hear the pen clicking. The point of this lab was to see how large ears are able to hear more sounds than the normal human ear.
3.

Student	Distance with Normal Ear	Distance with Enhanced Ear
Jessie	27.9	52.9
Albert	55	50
Reese	45	60
Tangie	68.6	58.6
Brandon W.	58.6	78.6
Kasey	25.3	15.3
David	40.6	55.6
Emily P.	30.6	25.6
Sierra	53.8	55.6
Stephanie	34.4	47.8
RaeShar	57	63.7
Rayshawn	47.6	41.6
Montez	45.6	30.6
Devon	51.6	87.9
TJ	40.6	63.3
Travis	50.6	55.6
Conner	89.7	128.9
Brandon H.	58.6	87.2
Emily S.	64.7	76.3
Total	945.8	1135.1
Average	49.8	59.7

4. Did the addition of the larger ear make a difference in the distance at which you were able to hear the pen click? Explain.

Yes. Unlike the normal ear, we were able to hear around the weather i.e. wind, voices, columns, echoes from the walls of the school building, and the nature outside interfering with the sound of the click.

5. Animals with Large Ears:

Bilby:

Large-eared Horseshoe Bat:

Long-eared Hedgehog:

Gool Waraabe:

Bat-eared Fox:



Animals with Small Ears:

Small Red-eared Guenon:

Polar Bear:

Seal:

Hippopotamus:

Loris:

6. Some animals have smaller ears because they don't have the capacity to hear far away as other animals do with larger ears. Also they have small ears for camouflage and so that it won't be an easy target for predators.