Which of the following best describes why radio telescopes are generally much larger in size than telescopes designed to collect visible light?
A) Getting an image of the same angular resolution requires a much larger telescope for radio waves than for visible light.
B) Radio telescopes are designed to collect sound rather than light.
C) It is because radio telescopes are used in the daytime and visible light telescopes are used at night.
D) Objects that emit radio waves are always much larger than objects that emit visible light, and therefore require larger telescopes.
Question 2Which of the following is not a general characteristic of the four jovian planets in our solar system?
A) They lack solid surfaces.
B) They are composed mainly of hydrogen, helium, and hydrogen compounds.
C) They are higher in average density than are the terrestrial planets.
D) They are much more massive then any of the terrestrial planets.
Question 3Why is it believed that more than one event, such as a collision, led to Uranus' extreme axial tilt?
What will be an ideal response?
Question 4Which of the following contributes to Venus being so hot?
A) It is closer than Earth to the Sun.
B) Its atmosphere is much denser than the Earth's.
C) Its atmosphere is made chiefly of carbon dioxide.
D) It has very little axial tilt so the equator is always directly exposed to the Sun.
E) All of the above are factors.
Question 5How can Wein's law be used to determine the temperature of a star?
What will be an ideal response?
Question 6Explain why interstellar molecules are best observed at radio wavelengths.
What will be an ideal response?
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