A Total Lunar Eclipse Can Last More Than an Hour

question 131

Multiple Choice

A total lunar eclipse can last more than an hour and a half,but a total solar eclipse never lasts more than 7 1/2 minutes.Why the difference?

• A) A total solar eclipse always occurs when the Moon is at perigee; it is moving fastest at that time.
• B) A total solar eclipse always occurs when Earth is at perihelion; it is moving fastest at that time.
• C) Both Earth and the Moon move clockwise in their orbits, as seen from the north. Thus, during a solar eclipse Earth and the Moon are moving in opposite directions, and during a lunar eclipse they are moving in the same direction.
• D) Earth's shadow at the Moon's distance is much larger than the Moon's shadow at Earth's distance. As Earth rotates, this narrow lunar shadow sweeps quickly over any given spot.

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Definitions:

Pie Chart

A circular graph divided into slices to illustrate numerical proportions in a dataset, where the arc length of each slice is proportional to the quantity it represents.

Outliers

Observations that are significantly different from, and lie outside the range of, most of the other data points.

Data Point

An individual value or piece of data that is collected as part of a dataset.