If the Moon Crosses Earth's Shadow at the Center of the Umbra

question 67

Multiple Choice

If the Moon crosses Earth's shadow at the center of the umbra, how long will the entire eclipse last from start to finish?

• A) 2 to 3 minutes
• B) 7 minutes
• C) 1 hour 45 minutes
• D) 2 hours
• E) 6 hours

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Definitions:

Independent Variable

In an experiment, the variable that is manipulated or changed to observe its effect on the dependent variable.

Dependent Variable

In an experiment, the variable that is being tested and measured, often to see if it is affected by changes in another variable (the independent variable).

Correlated

When two or more variables are related in some way, indicating that changes in one variable are associated with changes in another.

Experiment

A scientific procedure undertaken to make a discovery, test a hypothesis, or demonstrate a known fact.