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

---

Definitions:

Iconic Memory

A form of sensory memory that temporarily holds visual information, lasting for a brief moment before fading.

Meaningful

Something that has a significant or deep importance, relevance, or purpose to an individual or to society.

Related To Our Experience

A phrase indicating that something is connected or relevant to one's personal life events, knowledge, or sensations.

Semantic Processing

A cognitive process that involves the understanding of words and sentences by the brain.