1. Which of the following describes what a photon is? * 9 points
Energy released in the form of visible light when an electron drops from excited state
to ground state
When an electron moves to a higher energy level
Energy needed to move an electron from ground state to excited state
An electron in its normal orbit

electron microscopy and scanning tunneling microscopes gives us a greater understanding of atoms by being able to see the atom itself, and lets us see some atomic reactions.

explanation:

a pan containing water is placed in a positio n where it is exposed to a 10 mile per hour wind. the pan contains a uniform depth of 1.27 cm of water, is quite wide, and has a length of 2.44 m in the wind direction. the water in the pan is at a constant temperature of 15.5 °c.