How Can Craters Tell Us About the Ages of Surface

question 29

Multiple Choice

How can craters tell us about the ages of surface regions of planets?

• A)Crater density increases with time
• B)Material blasted from the craters sometimes reaches Earth and can be dated
• C)Craters shrink in size at a predictable rate
• D)Impacts produce carbon 14,which can be dated

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Definitions:

Esteem Needs

According to Maslow's hierarchy of needs, these are the fourth level and include self-esteem, confidence, respect by others, and respect for others.

Theory X

A management theory assuming that employees are inherently lazy and will avoid work if they can.

Behaviour Motivation

The drive behind individuals' actions, influenced by internal desires and external rewards.

Theory Y

A management concept that assumes employees are intrinsically motivated, enjoy their job duties, and work to better themselves without direct supervision.