Why Will Polaris No Longer Be the North Star in a Few

question 2

Multiple Choice

Why will Polaris no longer be the North Star in a few thousand years?

• A) A closer star will have moved between Earth and Polaris by then.
• B) Polaris will have moved away from Earth's axis.
• C) Earth's axis will no longer point toward it because of precession.
• D) The plane of the Solar System will have tipped away from it.

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Definitions:

Whole Number

A number without fractions; an integer.

Fraction

A mathematical expression representing the division of one quantity by another, indicating parts of a whole.

Square

A mathematical operation involving multiplying a number by itself, or a polygon with four equal sides and angles.

Square Root

A mathematical function that, for a given number, produces a value which, when multiplied by itself, gives the original number.