AST 1002 TEST GUIDE WITH
COMPLETE SOLUTION
The average distance from Earth to the Sun, 149,600,000 km, can be written
in shorthand notation as - ANSWER 1.496x10^8
The elevation angle between the northern horizon of a fixed observer and
the north celestial pole is - ANSWER The observers latitude
1 arc second is equal to - ANSWER 1/3600
Where would you have to be to see the south celestial pole on your horizon?
- ANSWER On the equator
The ecliptic crosses the celestial equator - ANSWER At two points, known as
equinoxes
Approximately what time will the first-quarter Moon rise? - ANSWER Noon
A solar eclipse can occur only when the - ANSWER The new moon is located
between the Sun and the Earth. (Sun, Moon, Earth)
In the geocentric model of the solar system developed by Ptolemy, the
planets move - ANSWER In circular epicycles, while the center of the
epicycles move in circular orbits around the Earth
The phenomenon of parallax is the - ANSWER change in apparent position of
a nearby object compared to background objects as a result of the motion of
the observer.
A space probe is put into a circular orbit around the Sun at a distance of
, exactly 2 AU from the Sun. According to Kepler's third law, how long does it
take this probe to orbit the Sun once? - ANSWER 2.8 years (square root of 8)
What did Galileo see when he observed Venus through his telescope? -
ANSWER Phases like those of the moon
What did Galileo see when he observed Jupiter through his telescope? -
ANSWER 4 satellites (moons orbiting Jupiter)
When white light passes through a prism a spectrum is formed. This is
because the prism - ANSWER Causes different wavelengths of light to travel
in different directions
All forms of light have what property in common? - ANSWER
electromagnetic radiation
The light-gathering power of a telescope depends directly on the - ANSWER
area of its primary mirror or lens
What is the magnification of a Newtonian telescope that has a primary mirror
of diameter 0.25 m and focal length of 2 m when used with an eyepiece of
focal length 25 mm and an optical diameter of 5 mm? - ANSWER 80 times
COMPLETE SOLUTION
The average distance from Earth to the Sun, 149,600,000 km, can be written
in shorthand notation as - ANSWER 1.496x10^8
The elevation angle between the northern horizon of a fixed observer and
the north celestial pole is - ANSWER The observers latitude
1 arc second is equal to - ANSWER 1/3600
Where would you have to be to see the south celestial pole on your horizon?
- ANSWER On the equator
The ecliptic crosses the celestial equator - ANSWER At two points, known as
equinoxes
Approximately what time will the first-quarter Moon rise? - ANSWER Noon
A solar eclipse can occur only when the - ANSWER The new moon is located
between the Sun and the Earth. (Sun, Moon, Earth)
In the geocentric model of the solar system developed by Ptolemy, the
planets move - ANSWER In circular epicycles, while the center of the
epicycles move in circular orbits around the Earth
The phenomenon of parallax is the - ANSWER change in apparent position of
a nearby object compared to background objects as a result of the motion of
the observer.
A space probe is put into a circular orbit around the Sun at a distance of
, exactly 2 AU from the Sun. According to Kepler's third law, how long does it
take this probe to orbit the Sun once? - ANSWER 2.8 years (square root of 8)
What did Galileo see when he observed Venus through his telescope? -
ANSWER Phases like those of the moon
What did Galileo see when he observed Jupiter through his telescope? -
ANSWER 4 satellites (moons orbiting Jupiter)
When white light passes through a prism a spectrum is formed. This is
because the prism - ANSWER Causes different wavelengths of light to travel
in different directions
All forms of light have what property in common? - ANSWER
electromagnetic radiation
The light-gathering power of a telescope depends directly on the - ANSWER
area of its primary mirror or lens
What is the magnification of a Newtonian telescope that has a primary mirror
of diameter 0.25 m and focal length of 2 m when used with an eyepiece of
focal length 25 mm and an optical diameter of 5 mm? - ANSWER 80 times
