Above ________ kilometer(s), the atmospheric pressure is so slight as not to register on an ordinary barometer.
A) 0.8
B) 8
C) 80
D) 800
E) 8,000

Question

Quizplus · Accepted Answer

At about 80 kilometers above Earth's surface, the atmospheric pressure is extremely low, making it difficult for standard barometers, which are designed to measure pressure within the more dense layers of the atmosphere, to detect any significant pressure.

Above ________ Kilometer(s), the Atmospheric Pressure Is So Slight as Not