This diagram depicts the energies of a few shells (energy levels) for the atom that produced the spectrum above. Image Description Diagram of five lines of energy levels drawn horizontally. n=1 is at the bottom and n=5 is at the top. Starting from the top, the line n=5 is shown. Moving downward, there is a small gap between the line n=5 and n=4, a slightly larger gap between n=4 and n=3, an even larger gap between n=3 and n=2, and a very large gap is shown between n=2 and n=1. Which of these situations would cause the atom to emit the highest frequency photon?

Members of the phylum Annelida have open circulatory systems.

Triploblastic animals are grouped according to body cavity which is referred to as a

“Protostome” refers to animals whose blastopore develops into a(n)

What is the serial repetition of body parts in a bilaterally symmetrical animal?

A Planaria is a member of which phylum?

In the first half of the 1900’s the Bohr model was abandoned in favor of the quantum mechanical (wave) model of the atom. The next two questions test your understanding of the quantum mechanical model of the atom.

  In the picture, a sound wave moves from the top of the page towards the bottom and passes through a small hole in a barrier (point 2 on the diagram).  The light areas represent regions of low pressure, and the dark areas represent high pressure.  The following questions ask you to use your understanding of wave behavior to explain what is happening at certain points.    Image Description horizontal evenly spaced bands of dark and light that extend from the top to a barrier with a hole. The distance between two adjacent white bands is labeled 1, the hole is labeled 2. In the next three questions, use your understanding of wave behavior to explain what is happening at certain points.

When a single electron is sent through the slits, which of these images best depicts what is observed?

When a very large number of electrons are sent through the slits, which of these statements best depicts what is observed?