Which statement is true according to the quantum model of the atom?
when an electron drops down from a high energy level to a lower one, light energy is emitted.
when an electron jumps up from a low energy level to a higher one, light energy is emitted.
every orbit around the nucleus of an atom is the same energy level.
after they emit light, electrons are sucked into the nucleus of the atom.

Option (a) is the correct answer.

Explanation:

Every orbit has a fixed value of energy which means that energy is quantised. When heat is absorbed by the atom then the electrons go from low energy level to high energy level.

Whereas when heat or energy is released by the atom then electrons move from high energy level to low energy level. As a result, this heat is released in the form of visible light.

Thus, we can conclude that the statement when an electron drops down from a high energy level to a lower one, light energy is emitted, is true according to the quantum model of the atom.

voluntary muscles are controlled by the cerebellum.

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.