One Feature Discovered on the Moon Is a Cliff Called

question 201

Multiple Choice

One feature discovered on the Moon is a cliff called a "scarp". How do planetary scientists believe they were formed?

• A) by shrinkage of the crust as the Moon cooled
• B) by impact
• C) at a convergent boundary between lunar tectonic plates
• D) by volcanism

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Definitions:

Gastric Artery

Any of the arteries supplying blood to the stomach, vital for providing the necessary oxygen and nutrients for gastric function.

Ductus Arteriosus

A fetal blood vessel connecting the pulmonary artery to the aortic arch, allowing most of the blood to bypass the fetus's developing lungs.

Foramen Ovale

An opening in the septum between the two atria of the heart in the fetus, which normally closes soon after birth.

Phrenic Veins

Veins that drain blood from the diaphragm, important for the return of blood to the heart.