What Are Comets Made Of

question 7

Multiple Choice

What are comets made of?

• A) ice and some rock
• B) ice
• C) high magnesium and iron rocks
• D) nickel-iron
• E) close-packed hydrogen

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Definitions:

Glottis

The part of the larynx consisting of the vocal cords and the slit-like opening between them.

Ventricular Fold

The ventricular fold, also known as the false vocal cord, is a structure in the larynx that plays a role in the protection of the vocal cords and in respiratory functions.

Epiglottis

A flap of cartilage at the root of the tongue, which is depressed during swallowing to cover the opening of the windpipe.

Oropharynx

The part of the throat located at the back of the mouth, serving as a pathway for food moving from the mouth to the esophagus and air passing to the larynx.