​Match Each Item with the Correct Statement Below

question 19

Multiple Choice

​Match each item with the correct statement below.
-sound waves used to form images of internal organs

• A)amplitude
• B)constructive interference
• C)destructive interference
• D)diffraction
• E)Doppler effect
• F)frequency
• G)longitudinal
• H)pitch
• I)ray
• J)reflection
• K)reverberation
• L)sound level
• M)transverse
• N)ultrasound
• O)waveform
• P)wavelength

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Definitions:

Legal Obligation

A duty enforced by law, requiring an individual or entity to conform to certain conduct or to refrain from certain actions.

Gratuitous Promise

A promise made without expecting anything in return, which is generally not enforceable in contract law unless it is made in a deed.

Existing Duty

An obligation that is currently in effect under the law or within the terms of a contract.

Consideration

In contract law, something of value promised to another when making an agreement, which is required for the contract to be enforceable.