If a Rock Started with 1,000 Atoms of a Parent

question 10

Multiple Choice

If a rock started with 1,000 atoms of a parent but now contains 250 atoms, how many half lives have passed?

• A) .25 half lives
• B) .5 half lives
• C) 1 half life
• D) 2 half lives
• E) there is no way to tell

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Definitions:

Recall Task

A memory task that requires individuals to remember and reproduce information from their memory without cues.

Autobiographical Memory

The memory of specific episodes or events.

Language Skill Development

The progression of acquiring language abilities, including understanding and producing spoken and written language.

Cognitive Functions

Mental processes involved in gaining knowledge and comprehension, including thinking, knowing, remembering, judging, and problem-solving.