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Physics 002 Midterm 1 6 March, 2001.
Time allowed: 80 minutes Total: 80 marks
Name:
Student ID:
A
Part A Multiple choice (5 marks each):
(1) The third quarter moon rises at
A.
Sunrise
B.
Noon
C.
Sunset
D.
Midnight
E.
The equinoxes Answer:____
(2) A total lunar eclipse is
A.
Visible only from the path of totality.
B.
Visible only during a new moon.
C.
Visible to all observers on the side of Earth from which the moon would be visible at that time.
D.
Visible only where the line of nodes meets the surface of Earth.
E.
An opportunity to study the corona of the Sun. Answer:____
(3) Radio telescopes have poor resolving power because
A.
Their diameters are so large.
B.
Radio waves have long wavelengths.
C.
The energy they receive is not electromagnetic radiation.
D.
Both A and B.
E.
None of the above. Answer:____
(4) You arrive at an external solar system to find a system exactly like the Moon and the Earth, except that the satellite is twice as far away from the planet as the Moon is from the Earth. If the orbital period of the satellite is the same as the Moons, then
A.
The mass of the satellite is twice that of the Moon.
B.
The mass of the satellite is four times that of the Moon.
C.
The mass of the satellite is eight times that of the Moon.
D.
The mass of the planet is twice that of the Earth.
E.
The mass of the planet is four times that of the Earth.
F.
The mass of the planet is eight times that of the Earth. Answer:____
(5) An observer in the Northern Hemisphere takes a time exposure of the night sky. If the photograph taken by the observer is illustrated in the figure, which direction was the camera pointing?
A.
Straight north
B.
Straight east
C.
Straight south
D.
Straight west
E.
Straight up, directly overhead
Answer:____
(6) According to Newton,
A.
The gravitational force of Earth acting on the Moon has the same magnitude as that acting on an apple on the surface of Earth.
B.
The gravitational acceleration of the Moon towards Earth is the same as that of an apple falling towards Earth on the surface of Earth.
C.
The gravitational acceleration of the Moon towards Earth is the same as that of an apple moving on the orbit of the Moon.
D.
The apple has the same weight on Earth as on the Moon.
E.
The reaction force between an apple on Earth and the Earth is the same as that between the Moon and the Earth.
Answer:____
(7) The factors directly affecting the resolving power of telescopes are:
I.
the size of the aperture
II.
the focal length of the objective
III.
the focal length of the eyepiece
IV.
the magnification
V.
the atmospheric turbulence
A.