Astronomy 10
Spring 2008
Midterm 1, In-class activities 7-8, 2/13 CPS
(Re-posted 080228)
Note: two versions, "x" and "xx"
1. (Q1.1)
c = cc = 3.0 points
2. (Q1.4)
c = bb = 3.0 points
3. (Q1.5)
a = cc = 3.0 points
4. (Q2.1)
b = bb = 3.0 points
5. (Q3.2)
e = aa = 3.0 points
6. (M1.1)
a = dd = 3.0 points
7. (M1.2)
b = bb = 3.0 points
8. (M1.3)
a = dd = 3.0 points
9. (M1.4)
b = dd = 3.0 points
10. (M1.5)
b = ee = 3.0 points
=====
(For the short-answer questions, refer to the grading comments below for
specific details as to what these letters mean.)
=====
11. (Q2.4)
p = 15/15: Correct. Clear and correct diagram of the observer, Earth, Moon and
Sun shown. For a total lunar eclipse, the Moon is completely in the umbra of
the Earth. All observers on the night side of the Earth will be able to see
this total lunar eclipse. Note that a total penumbral lunar eclipse may be
discussed instead, as long as all observers on the night side of the Earth see
the same thing.
r = 12/15: Nearly correct (explanation weak, unclear or only nearly complete);
includes extraenous/tangential information; or has minor errors.
t = 9/15: Contains right ideas, but discussion is unclear/incomplete or contains
major errors. Earth-Moon-Sun diagram is essentially correct (showing a total
lunar eclipse), but argument is based on observers being in different shadow
zones, which is not possible, as all observers on the night side of the Earth
are in the umbra of the Earth.
v = 6/15: Limited relevant discussion of supporting evidence of at least some
merit, but in an inconsistent or unclear manner. Serious but flawed attempt at
an Earth-Moon-Sun diagram, with major inconsistencies or errors, typically
showing a total/partial/annular solar eclipse.
x = 3/15: Implementation/application of ideas, but credit given for effort
rather than merit.
y = 1.5/15: Irrelevant discussion/effectively blank.
z = 0/15: Blank.
=====
12. (Q3.1)
p = 15/15: Correct. Draws heliocentric orbits of Mars (outer) and Earth
(inner), with Mars being on the meridian of a midnight observer located on the
Earth. Since Mars is at opposition, the Earth is in the process of "lapping"
it, resulting in Mars appearing to move retrograde (east-to-west, "backwards")
with respect to the background stars. Diagram and discussion consistent, with
some minor details omitted.
r = 12/15: Nearly correct (explanation weak, unclear or only nearly complete);
includes extraneous/tangential information; or has minor errors. Diagram
problematic/incomplete (e.g. Mars' orbit inside the Earth's, or observer
missing), but demonstrates some understanding of relative orbital motion and
prograde/retrograde motion with respect to the background stars.
t = 9/15: Contains right ideas, but discussion is unclear/incomplete or contains
major errors. Some attempt at explaining the "lapping" illusion to motivate
retrograde discussion. May conclude prograde but diagram is otherwise correct.
v = 6/15: Limited relevant discussion of supporting evidence of at least some
merit, but in an inconsistent or unclear manner.
x = 3/15: Implementation/application of ideas, but credit given for effort
rather than merit.
y = 1.5/15: Irrelevant discussion/effectively blank.
z = 0/15: Blank.
=====
13. (Q3.4)
p = 15/15: Correct. Galileo observed that satellites ("moons") move around
Jupiter as it moves across the sky, implying that the Earth is not the center of
all motion in the universe, thus undermining the case for geocentrism (without
providing concrete evidence that would support heliocentrism). May also state
heliocentrism is proved in addition to geocentrism being disproved.
r = 12/15: Nearly correct (explanation weak, unclear or only nearly complete);
includes extraneous/tangential information; or has minor errors. States that
heliocentrism is proven by the observed motion of satellites around Jupiter,
when results that disprove geocentrism do not necessarily imply that
heliocentrism is correct.
t = 9/15: Contains right ideas, but discussion is unclear/incomplete or contains
major errors. At least describes the observed motion of satellites around
Jupiter.
v = 6/15: Limited relevant discussion of supporting evidence of at least some
merit, but in an inconsistent or unclear manner. Based on extraneous arguments
concerning phases, perfect circles, uniform motion, etc.
x = 3/15: Implementation/application of ideas, but credit given for effort
rather than merit.
y = 1.5/15: Irrelevant discussion/effectively blank.
z = 0/15: Blank.
=====
Midterm 1 average = 46.7/75
PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 MT1 A7 A8 CPS
0002 b c a b e c a a b b p r r 60 2.9 3.0 8.1
0420 cc bb cc ff aa bb aa dd dd bb v r v 42 2.7 3.0 8.1
0429 ee bb cc bb aa dd bb dd aa ee p p r 66 2.9 2.9 8.1
0701 b a a b e d b c b b t v t 42 2.9 3.0 8.1
0753 c c a b e a b a e d v v x 39 0 0 0
1001 aa bb cc bb aa ee bb ee dd ee t v v 42 2.9 3.0 8.1
1073 b b d e e e a b c z v v t 24 2.9 3.0 2.1
1188 dd bb cc gg aa dd aa dd bb ee t t p 51 2.9 3.0 8.1
1189 d c a b e a b a e b v v z 36 2.8 2.7 0
1207 c c a f e a a c b b p p p 66 3.0 3.0 8.1
1212 ee bb cc bb ee dd bb aa bb ee p p p 63 2.9 3.0 8.1
1229 c c a f e a b a c b p v v 51 2.6 3.0 8.1
1307 bb dd bb ff ee ee bb ee dd dd t v x 24 2.8 3.0 8.1
1315 dd aa aa bb aa aa bb dd ee ee t t p 48 2.6 3.0 8.1
1316 b c c b b a b c a b p p p 60 2.9 2.8 8.1
1331 aa ee cc bb cc ee bb dd bb ee t v x 33 2.9 3.0 8.1
1337 0 0 0
1369 a c c b e d e c b b v p t 45 2.8 2.7 0
1422 c c c b e a b a d d v v v 39 0 0 0
1426 ee aa bb ee bb ee bb dd bb ee v v p 36 3.0 3.0 6.3
1484 aa bb cc gg aa dd ee dd bb ee p v p 54 2.9 2.9 8.1
1652 cc bb dd bb aa dd bb dd bb dd p v p 57 0 0 0
1741 cc bb aa gg aa aa bb bb dd ee v v t 39 2.9 2.9 7.5
1839 ee bb aa bb aa ee bb dd bb ee t v t 42 0 0 0.81
1871 d b c f e a a a a b t t p 45 2.9 2.9 8.1
1886 e c a b d a b a b b p t p 63 2.9 3.0 8.1
1910 ee bb cc bb aa ee bb dd bb ee t v t 45 2.6 0 8.1
1952 c c d e e a a a b b p t r 57 2.9 3.0 8.1
1985 bb aa cc ee aa dd bb aa dd ee p v v 45 2.9 2.9 0
1986 d a a f e a b a b e p v r 51 0 0 0.6
1989 c c a a e a a a c d v p t 48 2.9 3.0 8.1
2000 0 0 0
2112 dd bb cc ff bb ee bb bb dd ee p v p 51 2.7 3.0 8.1
2269 cc dd cc bb aa dd bb bb bb ee v v x 36 2.9 0
2316 aa ee cc bb aa cc bb dd ee aa v v t 36 0 0 0
2425 c c e f e a b a b b p t p 63 2.9 2.8 8.1
2431 bb bb cc bb aa dd bb dd dd ee p p t 66 2.8 3.0 7.8
2501 2.9 2.8
2505 ee dd bb ee aa cc bb bb dd aa v v v 27 0 0 0
2743 ee cc bb ff cc dd bb dd dd ee r v v 39 3.0 3.0 7.8
2828 cc bb cc ee aa dd bb aa dd ee t v t 48 2.9 3.0
3000 dd bb cc bb aa dd bb dd dd ee p p t 66 2.9 0 1.2
3512 e b c f d e b c b b p p r 51 2.8 3.0 7.5
3635 aa bb cc cc aa dd bb dd dd ee t r t 54 2.9 3.0 8.1
3737 bb bb cc ff ee dd bb dd bb bb r t v 42 2.7 3.0 5.7
4014 c c a b e d b a c b p p t 63 2.7 3.0 7.8
4024 a c d e d a a b b b v v p 39 2.9 2.9 8.1
4130 c c a f b a b c d a v v t 36 0 0 0
4256 b c c g e a b a b b t p t 54 2.8 2.7 8.1
5006 ee bb cc bb aa ee bb dd bb ee t t r 51 3.0 3.0 8.1
5276 cc bb cc dd aa dd bb dd dd ee r p p 69 2.9 3.0 8.1
5295 a c c e d a a e c e x v y 16.5 0 0 0
5311 a c c g d e b c c b p r t 45 2.7 3.0 6.9
5373 c c a b c a b a a b t v v 45 2.9 3.0 8.1
5453 e c d e e d a a e b t v v 33 2.8 2.7 8.1
5952 cc bb cc gg aa aa aa aa dd ee r t v 45 2.9 2.9 2.7
6258 dd bb cc bb aa aa bb dd dd ee p v r 57 3.0 3.0 0
6425 b c a g b a b a b b v p p 57 2.9 3.0 8.1
6564 cc bb aa gg aa dd bb bb aa ee p p v 54 0 0
7167 c c c e c e b c a b x v x 24 2.9 3.0 8.1
7467 cc dd cc ff aa dd bb aa dd ee p p p 66 2.9 3.0 8.1
7499 c c c g d a b a b b p z z 36 2.9 2.9 8.1
7551 a c a b e a e c b b p p t 60 2.9 3.0 8.1
7599 cc dd bb cc dd dd aa cc ee ee v v v 27 0 0 0
7691 b c a f e e a c b d t v r 39 2.9 2.8 8.1
8123 aa bb cc aa aa dd aa ee dd cc v v t 36 0 0 0
8225 c c c f b a b a d b p p t 57 2.9 2.8 8.1
8235 b d c g d e a c c b v v t 24 2.9 3.0 8.1
8658 0 0
8984 ee bb aa ff ee dd bb dd aa ee p v v 42 2.9 3.0 8.1
9518 bb bb cc gg aa dd aa dd dd ee p p r 63 2.9 3.0 8.1
NOTES:
*Do not forget your Astr 10 PIN number!
*The cumulative class CPS review score was 86%, which means double
participation bonus for the review.
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