Page 1 of 1

The principle of parallax: a. allowed Tycho Brahe to determine that his "new star" was indeed a star. b.

Posted: Sun Jul 10, 2022 11:53 am
by answerhappygod
The principle of parallax:
a. allowed Tycho Brahe to determine that his "new star" was indeed astar.
b. allows astronomers to determine the amount of retrograde motion ofa planet.
c. wasused by Galileo to argue for the heliocentric theory ofCopernicus.
d. wasused by Kepler to determine the shapes of the orbits of theplanets.
The Ptolemaic system accepted by the Church at the time ofGalileo could not explain:
a. theretrograde motions of the planets.
b. thelunar phases.
c. Galileo's observation of the phases of the planet Venus.
d. Galileo's discovery of parallax.
Which one of the following assumptions about gravity and orbitalmotion do astronomers use as they attempt to explain theuniverse?
a. Effects can be unrelated to any cause.
b. Aobject can exhibit a change in motion without a force being appliedto it.
c. Theforce of gravity is caused by objects rotating.
d. Scientific laws are the same throughout the universe.
Which of the following statements is TRUE?
a. Light from the sun takes approximately 8 minutes to reachNeptune.
b. Light from the nearest star to the sun takes about 17 years toreach Earth.
c. Theorbits of Mercury and Pluto are particularly noncircular.
d. Thesun seems to be located in a particularly crowded (with stars) partof our galaxy
Which of the following is one of the great discoveries inastronomy during this century?
a. Ourstar, the sun, is located outside of the Milky Way.
b. Atthe largest scale, galaxies are randomly distributed in space.
c. Ourgalaxy is alone amongst the other galaxies; it is not part of acluster of galaxies.
d. Ourgalaxy is only one of many billions in the universe.