When an electron jumps from an orbit where n = 4 to one where n = ...

[rmenurse]

When an electron jumps from an orbit where n = 4 to one where n = 3
 
  A) a photon is emitted.
  B) a photon is absorbed.
  C) two photons are emitted.
  D) two photons are absorbed.

Question 2

Any reply to a detected SETI signal should
 
  A) be decided upon by the group of scientists who first detected the signal
  B) be decided upon by the government of the country who first detected the signal
  C) be sent immediately as a signal is received
  D) represent a consensus of the Earth's population

[miss.ashley]

Answer to Question 1

A

Answer to Question 2

D

[rmenurse]

Excellent

[epscape]

Gracias!