During the 1860s,a Hypothetical Planet Named Vulcan,in a Solar Orbit

question 16

Multiple Choice

During the 1860s,a hypothetical planet named Vulcan,in a solar orbit closer to the Sun than Mercury,was proposed as the cause of abnormalities in Mercury's orbit.Much of the 1860s and 1870s was spent studying the solar disk waiting for Vulcan to cross.Vulcan never appeared (but we learned a great deal about sunspots!) .This technique is like which exoplanet-discovery technique?

• A) distorted protoplanetary disks
• B) the transit method
• C) the radial-velocity method
• D) the astrometric method

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Definitions:

Psychosexual Development

A Freudian theory describing how personality develops in stages (oral, anal, phallic, latent, and genital) through the resolution of conflicts centered on erogenous zones.

Sigmund Freud

A founding figure in psychoanalysis known for his theories on the unconscious mind, the development of sexuality, and the Oedipus complex.

Havelock Ellis

A British physician and psychologist known for his studies on human sexuality and for being a pioneer in the field of sexual psychology.

Female Sexuality

The ways in which women experience and express their sexual feelings, attitudes, and behaviors.