Exam 2: Light and Telescopes

Of all the forms of electromagnetic radiation, the one with the lowest frequency is

Stars like our Sun emit most of their light in which part of the electromagnetic spectrum?

Which of the following greatly improves the angular resolution of radio maps?

________ is the scientific study of the distribution of electromagnetic waves by energy and how these patterns are created in atoms and molecules.

What problem does adaptive optics correct?

The hottest objects with temperatures in the millions of Kelvins, give off most of their radiation in which part of the electromagnetic spectrum?

The emission line for a given atom shows spectral features at the ________ location as in its absorption spectrum.

In blackbody radiation, the energy is radiated uniformly in every region of the spectrum, so the radiating body appears black in color.

The part of the electromagnetic spectrum with the shortest wavelengths is called ________.

The gas between stars that has a temperature below a few hundred kelvins is best studies with which kind of telescope?

In Bohr's model of the atom, electrons

The light gathering ability of a telescope is most dependent on the diameter of its primary objective.

Give and explain an example of the use of the Doppler Effect on the highway.

X-rays travel at a greater speed than radio waves.

How do sound and light waves differ?

Radio dishes are large in order to

The primary purpose of an astronomical telescope is to magnify the images of distant objects, making them appear closer.

Why are molecular lines more complex than elemental spectral lines?

Consider this diagram. Which statement is TRUE?

Define absorption and emission lines.