If You Were Standing on Pluto,how Often Would You See

question 179

Multiple Choice

If you were standing on Pluto,how often would you see the satellite Charon rise above the horizon each day?

• A) once each 6-hour day as Pluto rotates on its axis
• B) twice each 6-hour day because Charon is in a retrograde orbit
• C) once every 2 days because Charon orbits in the same direction Pluto rotates but more slowly
• D) never because -Charon is a synchronous satellite with an orbital period exactly equal to Pluto''s rotation period

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Definitions:

Primary Prevention

A type of prevention practised prior to the biological origin of the disease (for example, immunization). See also secondary prevention and tertiary prevention.

Secondary Prevention

A type of prevention practised after the disease is identified but before it has caused suffering and disability (for example, the control of blood sugar early in the course of diabetes to prevent systemic damage). See also primary prevention and tertiary prevention.

Tertiary Programs

Educational or treatment programs designed to offer specialized and advanced learning or care options, often after primary and secondary options have been exhausted.

Community Psychology

An area of psychology that focuses on understanding individuals within their social, cultural, economic, geographical, and political contexts, and on promoting community well-being.