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(PHYS002)mid1a_s03.pdf
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PHYSICS 002
Midterm 1
Date: 11 March 2003
Time allowed: 70 minutes
Total: 70 marks


Name:

Student ID:

Seat:
A







































Part A: Short questions (18 marks, 2 marks each)


























The above figure shows the positions of the Earth and the Moon, as viewed from above the North Pole on 1 March. A to H represent 8 locations on the surface of the Earth. (The distance between Earth and Moon is not drawn to scale.)



Answer

1
What is the local time in location F?


2
What is the angle of elevation of the Moon as observed from location B? (The angle of elevation of an object is the angle its direction makes with the horizon.)


3
At which location is the Moon rising from the East?


4
What is the phase of the Moon as observed from location A?


5
As observed from location A, is the round edge of the bright surface of the Moon facing East or West?


6
On 8 March, what is the angle of elevation of the Moon as observed from location D?








AMoon To Sun

North Pole



Name:

Student ID:
A




Betelgeuse is a star with a luminosity 60,000 times that of the Sun. Its surface temperature is 3,200 K. (The surface temperature of the Sun is 5,800 K.)

Give your answer to 2 significant figures.
Answer

7
What is the wavelength of the peak intensity in the radiation of Betelgeuse? Give your answer in nm.


8
What is the flux from Betelgeuse in units of the solar flux?


9
Calculate the radius of Betelgeuse in units of solar radius.






Part B: True or false questions (16 marks, 2 marks each)



True
False

1
During a total solar eclipse, the corona of the Sun can be observed.



2
On the Earth surface, telescopes with diameters 2 m have the same resolving power as those with diameters 5 m.



3
To an observer on Earth, both Venus and Mars appear largest at the crescent phase.



4
When starlight passes through an interstellar cloud, the detected light has an emission spectrum.






(5-8) Nearly all of the planets in our solar system rotate counterclockwise as seen from the North. An exception is Venus, which rotates clockwise as seen from the North.


True
False

5
To an observer on Venus, the Sun rises from the West and sets in the East.



6
Polaris cannot be observed from the Northern hemisphere of Venus.



7
To an observer on Venus, the Orion constellation is seen inverted (that is, the head of the hunter is pointing North when observed on Earth, but pointing South when observed on Venus).



8
To an observer on Venus, stars rise a little bit earlier evening after eveni