The Reason an Astronaut in an Earth Satellite Feels Weightless

question 8

Multiple Choice

The reason an astronaut in an earth satellite feels weightless is that

• A) the astronaut is beyond the range of the earth's gravity.
• B) the astronaut is falling.
• C) the astronaut is at a point in space where the effects of the moon's gravity and the earth's gravity cancel.
• D) this is a psychological effect associated with rapid motion.
• E) the astronaut's acceleration is zero.

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Definitions:

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The volume of blood the heart pumps through the circulatory system in one minute, an important measure of heart efficiency and health.

Sensory Input

Information received by the sensory organs, such as sight, sound, touch, taste, and smell, which is then processed by the brain.

Chemotherapy

A type of cancer treatment that uses one or more anti-cancer drugs as part of a standardized regimen.

Losing Hair

The shedding or thinning of hair, known medically as alopecia, which can be due to various factors including genetics, stress, or medical conditions.