Why might the Cassini-Huygens probe to Titan be considered disappointing to exobiologists?
What will be an ideal response?
Titan has a nitrogen atmosphere shrouded with dense hydrocarbon rich clouds, with lakes of liquid hydrocarbons, not unlike the Miller-Urey experiment. So it was thought to be a prime candidate for life as we know it. However, the conditions Huygens found were too cold for this.
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Which of the following primarily determines the resolution of a telescope?
a. the barrel length b. the focal length of the objective c. the diameter of the objective d. the diameter of the eyepiece
What kind of star is destined to die by supernova explosion?
A) a brown dwarf B) a red giant C) a low mass star D) a high mass star
A slab of material has area A, thickness L, and thermal conductivity k. One of its surfaces (P) is maintained at temperature T1 and the other surface (Q) is maintained at a lower temperature T2. The rate of heat flow by conduction from P to Q is:
A. kA(T1 ? T2)/L2 B. kL(T1 ? T2)/A C. kA(T1 ? T2)/L D. k(T1 ? T2)/(LA) E. LA(T1 ? T2)/k
A method for identifying a black hole is to:
A) look for voids in the star fields. B) look for their effects on nearby companions. C) locate a visible star that disappears when the black hole passes in front of it. D) search for radio waves from the accretion disk. E) search for their pulsar signal.