Question 1: Which of the following
are true of electro-magnetic radiation (light)? You can have multiple
answers here and must get all of these for full credit (Partial credit is
possible).
a.The speed of light
within a given medium (e.g., glass) is constant.
b.The speed of light in
different mediums (e.g., vacuum vs. air) is different.
c.X-rays penetrate our
bodies, but cannot get from space through all the atmosphere down to the ground.
d.Infrared light is
absorbed at many wavelengths by water vapor in our atmosphere and has difficulty getting to
the ground.
e.Radio waves can have
wavelengths of hundreds of meters.
Question 2: Of the following types
of electromagnetic radiation, which has the lowest energy per
photon?
a.gamma-rays
b.Radio
c.Infrared
radiation
d.Visible
e.
X-rays