From Your Understanding of the Anatomy of the Ear, What

question 17

Multiple Choice

From your understanding of the anatomy of the ear, what is the most likely explanation for a dog's ability to hear higher frequencies (pitch) ?

• A) more ear bones for greater amplification
• B) larger outer ears
• C) a thinner and therefore more sensitive tympanic membrane (eardrum)
• D) a wider range to the tectorial membrane and hair cells
• E) a more advanced brain section devoted to hearing

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Definitions:

Isotopes

Variants of a particular chemical element that have the same number of protons but different numbers of neutrons.

Evaporation

The process by which water changes from a liquid to a gas or vapor, a key part of the Earth's water cycle and energy balance.

Precipitation

Any form of water, liquid or solid, that falls from the atmosphere and reaches the ground, including rain, snow, sleet, and hail.

Melting

The process of turning a solid into a liquid by applying heat.