If You Obtained a Sample of a Meteorite and Determined

question 95

Multiple Choice

If you obtained a sample of a meteorite and determined the abundances of uranium (²³⁸U) and lead (²⁰⁷Pb) in it, and found that for every 1 uranium atom there were 15 lead atoms, then what would the age of this rock be? Note that this form of uranium decays to this form of lead with a half-life of 700 million years. For simplicity, you can assume that there was no lead in the rock when it originally formed.

• A) 1.4 billion years
• B) 2.8 billion years
• C) 4.0 billion years
• D) 10.5 billion years
• E) 3.6 billion years

Comprehend the concept of emblems and their cultural variability in communication.

Understand the distinct brain activities associated with different emotions.

Acknowledge the innate nature of facial expressions and the possibility of controlling them.

Recognize the vast range of human facial expressions.

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Definitions:

Warmer

An adjective describing an increase in temperature or a device used to raise the temperature of something.

Moisture

The presence of a liquid, especially water, often in trace amounts in the environment or substances.

Food Passage

The process by which food moves through the digestive tract, starting from ingestion into the mouth and continuing through the esophagus, stomach, and intestines until waste is excreted.

Air Passage

The path through which air moves into or out of the respiratory system, including the nose, throat, and lungs.