In 2013, a Small Stony Asteroid Collided with the Earth

question 23

Multiple Choice

In 2013, a small stony asteroid collided with the Earth above the Russian city of Chelyabinsk. What was the result?

• A) A large earthquake was felt all over Europe and Asia
• B) A fireball briefly brighter than the Sun could be seen in the sky
• C) It broke apart and large pieces of rock fell from the sky, killing thousands of innocent people
• D) The Earth's orbit around the Sun changed in a measurable way
• E) It burned up so high in the atmosphere, absolutely nothing could be felt or seen on the ground

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Definitions:

Force Fit

A type of interference fit where components are pressed together using high force, resulting in a very tight fit with no movement between parts.

Hole

An opening through a solid body or surface, typically circular.

Allowances

The intentional difference between the maximum material limits of mating parts to ensure a certain type of fit.

Tolerances

The permissible limits or variations in dimensions, properties, or conditions of an object or system, allowing for proper function without exact precision.