With respect to atomic matter, Earth is a(n) _______ system. With respect to energy flow, Earth is a(n) _______ system.
A) open; open
B) open; closed
C) open; upwelling
D) closed; open
E) closed; upwelling

Question

Quizplus · Accepted Answer

With respect to atomic matter, Earth is a closed system because matter cannot be created or destroyed; it can only change form. This means that the total amount of matter on Earth remains constant. However, with respect to energy flow, Earth is an open system because it receives energy from the sun and radiates energy back into space. This means that the total amount of energy on Earth is not constant and can vary over time. Therefore, choice D (closed; open) is the best answer.

With Respect to Atomic Matter, Earth Is A(n) _______ System