When Viewed from Earth,Venus Subtends an Angle of About 1

question 250

Multiple Choice

When viewed from Earth,Venus subtends an angle of about 1 arc minute (1/60°) when it is at the closest point to Earth in its orbit.If you were watching Venus set in the west over a clear horizon (e.g.,ocean) ,how long would Venus take from the time it first reached the horizon to completely disappear below the horizon?

• A) It would be almost instantaneous (much less than 1 second).
• B) second
• C) about 4 minutes
• D) about 4 seconds

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Core Features

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