When an electron moves from one energy level to another, if the transition is to a energy level, energy is absorbed, and a photon is by the atom. Question 16 options:
higher; absorbed
lower; emitted
lower; absorbed
higher; emitted

The famous scientist galileo galilei did several experiments with sloping planes, which he rolled metal balls down so that he could study motion. by changing the slope, he could study how the speed at which the ball rolled was affected. what was the independent variable in galileo's experiment? a. the speed of the ball b. the slope of the plane c. whether the ball moved d. what the ball was made of