The Moons of Mars,Phobos (Fear)and Deimos (Terror),are Very Close to the Planet

question 22

Multiple Choice

The moons of Mars,Phobos (Fear) and Deimos (Terror) ,are very close to the planet compared to Earth's Moon.Their orbital radii are 9,378 km and 23,459 km respectively.What is the ratio of the orbital speed of Phobos to that of Deimos?

• A) 0.2528
• B) 0.3998
• C) 1.582
• D) 2.858
• E) 3.956

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Definitions:

Erikson

Erik Erikson, a psychoanalyst known for his theory on the psychosocial development of human beings across eight stages of life.

Interdependent

A mutual dependence between things or people, where each is reliant on the other for certain demands or needs.

Previous Stages

The earlier phases or periods in a sequence of events or processes, often referring to development.

Autonomy versus Shame

A stage in Erikson's psychosocial development theory where, during toddlerhood, children develop a sense of personal control and independence, or experience doubt and shame.