Far infrared astronomy must be done from high-flying aircraft because
a. far infrared radiation is absorbed low in Earth's atmosphere.
b. far infrared photons are quite energetic.
c. far infrared telescopes are not very heavy.
d. far infrared sources are very bright.
e. none of the above
Question 2The nucleus of the hydrogen atom consists of a single neutron.
Indicate whether the statement is true or false
Question 3The sidereal drive of a telescope mounting must turn the telescope
a. southward about the polar axis.
b. eastward about the polar axis.
c. westward about the polar axis.
d. northward about the polar axis.
e. none of the above
Question 4One solar mass stars produce their energy by the set of nuclear reactions called the CNO cycle.
Indicate whether the statement is true or false
Question 5Radio telescopes are important in astronomy because
a. they can detect cool hydrogen.
b. they have high magnification.
c. the can detect interstellar dust clouds.
d. they are very inexpensive to build on tops of mountains.
e. they don't need to be as large as optical telescopes to achieve the same resolving power.
Question 6High mass stars evolve more slowly to the main sequence than lower mass stars.
Indicate whether the statement is true or false
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