Question

When an electron moves from a lower to a higher energy level

Answer 1

A fixed amount of energy was absorbed.

Step-by-step explanation:

When an electron moves from a lower energy level to a higher energy level, It is absorbing energy either from heat, or being energized otherwise. This leads the electron into a state called the "excited state." This state is unstable, so the electron eventually calms itself down and goes back down to its original "ground state."

Answer 2

The electrons in an atom exist in various energy levels. When an electron moves from a lower energy level to a higher energy level, energy is absorbed by the atom. When an electron moves from a higher to a lower energy level, energy is released (often as light).