Which is not true of Earth's atmosphere?
A) It is the sum of all the exhalations and inhalations of life on Earth.
B) We consider the top of the atmosphere to be 32,000 km (20,000 mi.) from Earth.
C) It protects us from deadly UV radiation, yet lets light through.
D) Its temperatures range from -90°C (-130°F) degrees to 1200°C (2200°F).
E) The principle substance is air, a mixture of many gases that behaves like a single gas.

Question

Quizplus · Accepted Answer

The top of Earth's atmosphere is actually considered to be at an altitude of approximately 10,000 km (6,200 mi.), not 32,000 km.

Which Is Not True of Earth's Atmosphere