Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]
Groups > sci.physics > #590417
| From | Sergio <invalid@invalid.com> |
|---|---|
| Newsgroups | sci.physics |
| Subject | Astronomy 1 EXAM for physics people from University |
| Date | 2016-07-22 21:07 -0500 |
| Organization | Aioe.org NNTP Server |
| Message-ID | <nmujh8$2p7$1@gioia.aioe.org> (permalink) |
answers can be found near link posted by Starmaker, no cheating
ASTR I
Practice Test for EXAM 5
1. Neptune was discovered by means of
a. theoretical computations of its position combined with
visual observing.
b. photography of the entire sky and blind searching.
c. observations of the sky from spacecraft.
d. lunar occultations.
e. interferometry.
2. Which planet is most similar to Neptune?
a. Mercury
b. Jupiter
c. Saturn
d. Uranus
e. Pluto
3. Uranus is peculiar because its
a. orbit is highly eccentric.
b. orbit is strongly inclined to the ecliptic plane.
c. satellites are in polar, rather than equatorial, orbits.
d. axis of rotation is in the ecliptic plane.
e. moons revolve in the same direction the planet rotates.
4. Which of the following molecules is found in the spectrum of
Uranus, Neptune, and Pluto?
a. methane
b. carbon dioxide
c. water vapor
d. nitrogen
e. ozone
5. Which of the giant planets has the least atmospheric activity?
a. Jupiter
b. Saturn
c. Uranus
d. Neptune
6. What atmospheric gas is responsible for the bluish color of
Uranus and Neptune?
a. ammonia
b. water vapor
c. carbon dioxide
d. methane
e. hydrogen
7. Neptune emits __________ energy than it receives from the Sun.
a. less
b. the same
c. more
8. Rings around Uranus were discovered by means of
a. photography from a high altitude observatory on Earth.
b. photography from spacecraft.
c. variations of a star's brightness as it passed behind the
ring.
d. theoretical prediction.
e. none of the above, since Uranus has no known rings.
9. Which of the following describes the rings of Neptune?
a. very extensive, well formed circles and made up of bright
particles
b. asymmetric circles which are uneven and lumpy
c. smooth, symmetric circles made up of dark particles
d. Neptune does not have any rings
10. Which of the following describes the magnetic fields of Uranus
and Neptune?
a. off-center and tilted with respect to the rotation axis
b. off-center and aligned with the rotation axis
c. through the center and tilted with respect to the rotation
axis
d. through the center and aligned with the rotation axis
11. The dark dusty rings found by Voyager around Uranus are
thought to be
a. young and/or temporary.
b. as old as the planet itself.
c. formed out of material from passing comets.
d. formed from material from the solar wind.
e. formed from material ejected by the volcanoes of Io.
12. Triton's atmosphere is composed of
a. CO2 and H2O.
b. O2 and Ammonia.
c. H2O and Methane.
d. N2 and Methane.
e. none - there is no atmosphere.
13. Which of the following statements about Pluto is FALSE?
a. it is composed mainly of rocks and metals
b. it is currently closer to the Sun than Neptune
c. it has a methane atmosphere
d. it is tilted more than 100ΓΈ on its side
14. Which object is Pluto most similar to in structure and
composition?
a. Io
b. Jupiter
c. Earth
d. Triton
e. Uranus
15. Which of the following can NOT be determined from Earth-based
studies of asteroids?
a. internal temperature
b. shape
c. size
d. surface composition
e. surface temperature
16. Most asteroids are of the
a. S - class (silicon).
b. M - class (metallic).
c. C - class (carbonaceous).
d. U - class (unknown).
17. If all the material in the asteroid belt were in a single
body, the mass of this body would be roughly that of
a. the Moon.
b. the Earth.
c. Jupiter.
d. none of the above, it is much less than any planet.
18. Which of the following argues AGAINST the asteroids coming
from the breakup of a planet?
a. the asteroid orbits are confined to the ecliptic
b. the average asteroid diameter is only a few kilometers in
size
c. some asteroids are reddish while others are dark
d. the total amount of mass in the asteroid belt is small
19. Which of the following statements about asteroids is true?
a. the planetismals that formed the asteroids were never
differentiated
b. there is a trend to the distribution of the type of
asteroids within the asteroid belt
c. the asteroid belt was definitely produced by the breakup
of a large planet
d. the Kirkwood gaps are due to the gravitational influence
of Mars
20. What is the Oort Cloud?
a. another name for the Great Red Spot on Jupiter
b. the name of the spherical cloud of comets surrounding the
Sun
c. the name given to the Great Dark Spot on Neptune
d. a giant cloud structure observed in Venus's atmosphere
e. a bright region of the sky caused by the presence of a
cloud of asteroids
21. In general, short-period comets
a. have orbits which are highly elongated.
b. have orbits which are inclined at large angles to the
ecliptic.
c. formed in the spherically shaped Oort cloud.
d. are really asteroids.
e. formed in a disc-shaped cloud centered on the ecliptic.
22. How is it possible for a comet originating in the Oort cloud
to become a short-period comet?
a. its path would have to be altered by the gravitational
pull of a large planet, such as Jupiter
b. its path must travel very close to the Sun, so that the
solar winds would alter its path
c. it must collide with another object in the inner solar
system
d. nothing needs to occur, since all comets from the Oort
cloud are short-period comets
23. A comet's nucleus has a diameter of roughly
a. 10 km.
b. 100 km.
c. 1,000 km.
d. 10,000 km.
e. 100,000 km.
24. The nucleus of Halley's comet was found to be
a. covered with light colored material.
b. covered with dark material.
c. not covered with anything.
25. Which of the following was found to be the most abundant
chemical in Halley's comet?
a. water
b. carbon dioxide
c. carbon monoxide
d. ammonia
e. methane
26. The fact that volatile gasses are present in comets today
tells us that comets have been
a. subjected to high temperatures.
b. hot in the past, but are cool today.
c. cold in the past, but hot today.
d. cold in the past and still cold today.
27. A bolide is
a. a very bright meteor.
b. a very large iron meteorite.
c. a very large carbonaceous meteorite.
d. a grain of interplanetary dust.
28. A meteorite is
a. a rock or grain of sand passing through the Earth's
atmosphere.
b. the trail left by a rock or piece of sand as it passes
through the Earth's atmosphere.
c. a rock from space that strikes the ground.
d. most often a part of a comet's nucleus.
29. Meteorites are composed of
a. hydrogen ices.
b. helium ices.
c. heavy elements like silicon.
d. unknown elements, unlike any found on the Earth.
30. Which of the following statements is true?
a. all planetary orbits lie within the ecliptic
b. all planetary orbits are circles to within the accuracy of
our measurements
c. as viewed from the north pole, all planets revolve
counterclockwise
d. the rotation axis of each planet is perpendicular to its
orbital plane
e. planets always rotate in the same direction in which they
revolve
31. If the Sun retained its angular momentum during its formation,
the rotation rate would be expected to be
a. very rapid (in less than five days).
b. moderate (6-20 days).
c. slow (in greater than 20 days).
d. zero (non-rotating).
32. What does the presence of radioactive isotopes in the solar
system tell us?
a. a supernova must have occured soon before the formation of
the solar system
b. the solar system formed in a catastrophic process
c. the solar nebula had a typical composition compared to
other interstellar clouds
d. the Sun was unusually hot during its formation
33. Comets are thought to have formed
a. in the Oort cloud where they are today.
b. in the inner solar system, where radiation pressure from
the Sun pushed them out to their current place in the Oort
cloud.
c. in the vicinity of Uranus and Neptune from whence
gravitational forces moved them to the Oort cloud.
d. in interstellar space where they were captured by the
solar system at the distance of the Oort cloud.
34. What important event occurred while the Sun was in its T Tauri
phase (a phase young stars go through in which they have a
strong stellar wind similar to the solar wind)?
a. Jupiter was formed
b. the Earth-Moon system was formed
c. the Sun completed its contraction so that it became like
it is today
d. gas and dust remaining in the solar system were dispersed
e. life formed
35. Chiron is
a. the moon of Pluto.
b. a satellite of Saturn.
c. the largest object in the asteroid belt.
d. an asteroid/comet like object found in the outer solar
system.
36. How is it possible to detect Earth-sized planets around other
stars?
a. look for their gravitational influence on the star
b. look for velocity variations in the star
c. use the Hubble Space Telescope to detect them
d. it is impossible to detect them
Back to sci.physics | Previous | Next | Find similar | Unroll thread
Astronomy 1 EXAM for physics people from University Sergio <invalid@invalid.com> - 2016-07-22 21:07 -0500
csiph-web