As It Orbits the Earth, the Moon Appears to Move

question 41

True/False

As it orbits the Earth, the Moon appears to move eastward about its own diameter everyhour.

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Definitions:

Actin

A protein that forms (along with myosin) the contractile filaments of muscle cells, and is also involved in motion in other types of cells.

Muscle Contraction

The process by which muscle fibers generate force and shorten or maintain tension in response to stimulation.

Abdominis

Referring to abdominal muscles, especially the rectus abdominis, which is a key muscle in the front of the abdomen.

Abdomen

The part of the body that lies between the chest and the pelvis, containing most of the digestive system organs, among others.