Unformatted text preview: N8206 Inside the Milky Way
10 November 2005 17:40-19:30 Ersin Gligiis
Name: A N S U.) E RS
- Answer 24 out of30 multiple-choice questions. Theﬁrst 2' will be taken into account in
case you answer more (3 points each). - Salve 4 out of 6 problems The ﬁrst 4 will be taken into account in case you work on more
- Duration: 90 minutes 1) Scientists today do not accept the Ptolemaic model because: A) it is ancient history. B) it was too complicated, compared to Copernicus' heliocentric model.
C) it has been shown that Ptolemy faked his data. D) it had no explanation for retrograde motion. the work of Tycho Brahe and Kepler showed the heliocentric model was more accurate. 2) The heliocentric model was actually first proposed by:
A) Aristotle. B Archimedes.
Aristarchus. Alexander the Great.
E) Hipparchus. 3) Which of the following is a contribution to astronomy made by Galileo?
A) The astronomical telescope can show us far more detail than the eye can.
B) Jupiter has four moons orbiting it. C) The Moon has craters, mountain, valleys, and dark ﬂat areas on its surface. ) Venus appears almost fully lit when it lies on the far side of the Sun.
All of the above are his discoveries. 4) Which concept was NOT a part of Kepler's Laws of Planetary Motion?
A) All planetary orbits are ellipses.
B) The square of the planet's period is equal to the cube of its average distance.
C) A planet must move fastest in its orbit at perihelion.
Epicycles are needed to explain the varying brightness of the planets. ) The line that connects the Sun to Mercury sweeps out the same area in a month as does the
line connecting us to the Sun. 5) Combining Newton's and Kepler‘s laws, we can weigh the Sun, provided we know:
A) its density as found by spectroscopy. B its temperature as found by Wien's Law.
he size of the AU. and exact length of the year.
D) the Earth's mass and circumference.
E) the exact timings of the transits of Venus and its diameter. ...
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