An extraterrestrial observer would pick up the strongest radio signals when:
A)the Earth was at perihelion.
B)North America was either rising or setting for the observer.
C)North America was directly in front of the observers.
D)at new or full Moon.
E)Saturday Night Live is on.

Question

Quizplus · Accepted Answer

North America would generate stronger radio signals when it is either rising or setting for the extraterrestrial observer because the ionosphere is compressed towards the Earth's surface during this time, allowing more radio waves to penetrate it and reach the observer. The strongest radio signals would be picked up when North America, where most of Earth's radio broadcasts originate, is either rising or setting for the observer. When North America is directly in front of or behind the observer, the signal would be weaker due to the curvature of the Earth blocking the radio waves. The other choices, such as perihelion or lunar phase, would have no significant impact on radio signals. Saturday Night Live being on would not affect radio signals either.

An Extraterrestrial Observer Would Pick Up the Strongest Radio Signals