Which of These Theories Is Now Considered to Be the MOST

question 291

Multiple Choice

Which of these theories is now considered to be the MOST likely for the formation of the Moon?

• A) fission theory, in which a passing planetesimal body pulled material out of the still-molten Earth and left it in orbit to form the present-day Moon
• B) co-creation theory, in which Earth and the Moon were formed at the same time out of the same material
• C) capture theory, in which Earth's gravity drew the Moon into orbit around it
• D) collision-ejection theory, where an interplanetary collision or collisions knocked material into orbit around Earth that eventually formed into the present-day Moon

---

Definitions:

Reaction Time

The interval of time between the presentation of a stimulus and the initiation of the muscular response to that stimulus.

Language Acquisition

The process by which humans acquire the ability to perceive, comprehend, and produce language, usually in early childhood.

Vocabulary

The collection of words known and used by a person in a particular language, fundamental to effective communication and comprehension.

Two-Word Sentences

Early childhood sentences that consist of two words, often illustrating a simple concept or action.