The composition of a planet\'s atmosphere can be measured during atransit by ana

Question

The composition of a planet's atmosphere can be measured during atransit by analyzing
A) the wobble in a star's position on the sky.
B) the excess absorption of starlight at specific wavelengths.
C) the excess emission of starlight at specific wavelengths.
D) the length and depth of the dip in light during the transit.
E) the amplitude and period of the star's motion.

What would happen to the planets in a solar system where thecentral star did not have a strong wind?
A) The gas in the solar nebula would create a drag on the planetsand their orbits would migrate outwards.
B) The gas in the solar nebula would create a drag on the planetsand their orbits would migrate inwards.
C) All planets would continue to grow to large sizes but theirorbits would be unchanged.
D) One planet would grow to dominate all the others andgravitationally eject them out of the system.
E) Nothing, the star does not affect the process of planetformation.

Which of the following is a consequence of the discovery ofhot Jupiters for the nebular theory of solar system formation?
A) It has been modified to allow for planets to migrate due togravitational interactions.
B) It has been modified to allow for the formation of gas giantswithin the frost line.
C) Its status is unclear and awaits further observations that willdetermine whether hot Jupiters are dense Earth like planets or gasgiants.
D) It has been discarded.

What observations are needed to tell whether an Earth-likeplanet is geologically alive or dead?
A) spacecraft travel to the actual star system - this is the onlyway in which we will be able to observe geologic activity on anextrasolar planet
B) mass and size, therefore density, from combined Doppler andtransit observations
C) images and spectra of the planet
D) orbital distance to show if the planet lies in the habitablezone of the star

Explanation / Answer

QuestionDetails: QuestionDetails: The composition of a planet's atmosphere can be measured during atransit by analyzing
A) the wobble in a star's position on the sky.
B) the excess absorption ofstarlight at specific wavelengths.
C) the excessemission of starlight at specific wavelengths.
D) the length and depth of the dip in light during the transit.
E) the amplitude and period of the star's motion.

What would happen to the planets in a solar system where thecentral star did not have a strong wind?
A) The gas in the solar nebula would create a drag on the planetsand their orbits would migrate outwards.
B) The gas in the solarnebula would create a drag on the planets and their orbits wouldmigrate inwards.
C) All planets would continue to grow to large sizes but theirorbits would be unchanged.
D) One planet would grow to dominate all the others andgravitationally eject them out of the system.
E) Nothing, the star does not affect the process of planetformation.

Which of the following is a consequence of the discovery ofhot Jupiters for the nebular theory of solar system formation?
A) It has been modified toallow for planets to migrate due to gravitationalinteractions.
B) It has been modified to allow for the formation of gas giantswithin the frost line.
C) Its status is unclear and awaits further observations that willdetermine whether hot Jupiters are dense Earth like planets or gasgiants.
D) It has been discarded.

What observations are needed to tell whether an Earth-likeplanet is geologically alive or dead?
A) spacecraft travel to the actual star system - this is the onlyway in which we will be able to observe geologic activity on anextrasolar planet
B) mass and size, therefore density, from combined Doppler andtransit observations
C) images and spectra ofthe planet
D) orbital distance to show if the planet lies in the habitablezone of the star

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