Which of These Is Believed to Be the Correct Explanation

question 47

Multiple Choice

Which of these is believed to be the correct explanation for the origin of the Moon?

• A) The Moon was formed elsewhere in the solar system (which is why its composition differs from that of Earth) and was later captured by Earth's gravity.
• B) Shortly after its formation, Earth was spinning so fast in its molten state that a large piece of material was thrown off, and this chunk coalesced to form the Moon-leaving the Pacific Ocean basin in the place where it was thrown off.
• C) Earth and the Moon were formed separately at the same time, while in orbit around their common center of mass, by the accretion of planetesimals.
• D) Earth was struck by a large planetesimal or planetesimals that caused material to be ejected. This material coalesced to form the Moon.

Comprehend the impact of sleep deprivation on cognitive performance and physical health.

Identify the stages of sleep and the characteristics of each.

Recognize the physiological and psychological functions of sleep.

Describe the complex nature of consciousness and its variations.