=========================preview======================
(PHYS002)mid1a_s03.pdf
Back to PHYS002 Login to download
======================================================
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