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(PHYS002)mid1ab_f03.pdf
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PHYSICS 002
Midterm 1
Date: 14 October 2003
Time allowed: 70 minutes
Total: 70 marks
Name:
Student ID:
Seat:
A
Useful data:
Velocity of light = 300,000 km/s
Part A Multiple choice (12 marks)
(1) It is winter solstice, and you are located 23.5 degrees North latitude.
A.
Sun rises at 6 am standard time, and sets at 6 pm on this day.
B.
Sun is directly overhead at noon.
C.
Sun is at the lowest point in the South.
D.
Nights now begin to get longer than the days.
E.
Days now begin to get shorter than the nights. Answer:____
(2) When will the full moon be highest for an observer in the Southern hemisphere?
A.
The angle between the Southern horizon and the full moon at midnight does not change with seasons.
B.
At midnight near the summer solstice
C.
At midnight near the vernal equinox
D.
At midnight near the winter solstice
E.
At midnight near the autumnal equinox Answer:____
(3) Which of the following are true about planetary motion as viewed from the Jupiter?
I.
Venus can go through a full set of phases.
II.
Earth is never seen in the sky at midnight.
III.
Mercury is seen in the sky at sunrise or sunset.
IV.
Planets usually appear to move from West to East against the stars.
V.
Planets do not make a fixed pattern on the sky.
A.
I only.
B.
II and III only
C.
IV only
D.
V only
E.
All of the above
Answer:____
Part B True or False (10 marks)
Fig. 1: Your view at midnight
(1-5) If you have the view shown above at midnight, then
True
False
(1) At the same instant, and at a location with a latitude of 50oN directly North of you, Canis Major is at a higher elevation than your view shown here.
(2) At the same instant, and at a location 3,000 km East of you, Orion is at a lower elevation than your view shown here.
(3) 4 hours later at the same location, Canis Major will be at a higher elevation than your view shown here.
(4) 1 month later at the same time of the night, Taurus will be at a higher elevation than your view shown here.
(5) 1 year later at the same time of the night, Saturn will be at a lower elevation than your view shown here.
East
Southeast
Northeast
Part C Short Questions (12 marks)
Fig. 2: The strength of the Balmer lines of hydrogen
Question
Answer
(1) What are the possible temperatures of a star with a line strength of 0.5? Give your answer to the nearest 500 K.
(2) In order to determine the exact temperature of the star, another exp