ASTR LAB FINAL EXAM GUIDE QUESTIONS AND
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
8.59 x 10^6 to scientific notation Ans✓✓✓8590000
6.35 x 10^9 to scientific notation Ans✓✓✓6350000000
Which of the following SI units could be used to measure the ambient
temperature? Ans✓✓✓Kelvin
Convert m to gm
9,780,000,000 m Ans✓✓✓9,780,000,000 x 1 Gm/1,000,000,000 =
9.78Gm
When can we say that a number is written in scientific notation?
Ans✓✓✓when a number between 1 and 10 is multiplied by a power of
10
Which of the following coordinate system is observer centered?
Ans✓✓✓Horizontal (Altitude/Azimuth)
Which would be the azimuth of an object in degrees if its located 20
degrees south of west? Ans✓✓✓west = 270 degrees
270-20= 250
, Which of the following functions is NOT a function of stellarium?
Ans✓✓✓get the weather condition to plan an observation
Which is the imaginary line that divides the celestial sphere into equal
halves? Ans✓✓✓celestial equator
Which is the angular distance in hours, minutes and seconds measured
along the celestial equator going eastward starting from the vernal
equinox? Ans✓✓✓Right Ascension
How many arcminutes are equal to 0.6 degrees? Ans✓✓✓36 arcminutes
(1 degree = 60 arcminutes, so 0.6 degrees = 60*(0.6) = 36')
Which of the following types of optical telescopes have a primary
mirror? Ans✓✓✓Reflector (Reflector telescopes work under the
principle of reflection and have a primary mirror and a secondary
mirror)
Which is the instrument built to detect gravitational waves?
Ans✓✓✓LIGO - Laser Interferometer Gravitational (The Laser
Interferometer Gravitational-Wave Observatory is the instrument built to
detect gravitational waves)
How many seconds are equal to 0.5 degrees? Ans✓✓✓1800 arcseconds
1 degree = 3600
CORRECT DETAILED ANSWERS (VERIFIED ANSWERS)
ALREADY GRADED A+
8.59 x 10^6 to scientific notation Ans✓✓✓8590000
6.35 x 10^9 to scientific notation Ans✓✓✓6350000000
Which of the following SI units could be used to measure the ambient
temperature? Ans✓✓✓Kelvin
Convert m to gm
9,780,000,000 m Ans✓✓✓9,780,000,000 x 1 Gm/1,000,000,000 =
9.78Gm
When can we say that a number is written in scientific notation?
Ans✓✓✓when a number between 1 and 10 is multiplied by a power of
10
Which of the following coordinate system is observer centered?
Ans✓✓✓Horizontal (Altitude/Azimuth)
Which would be the azimuth of an object in degrees if its located 20
degrees south of west? Ans✓✓✓west = 270 degrees
270-20= 250
, Which of the following functions is NOT a function of stellarium?
Ans✓✓✓get the weather condition to plan an observation
Which is the imaginary line that divides the celestial sphere into equal
halves? Ans✓✓✓celestial equator
Which is the angular distance in hours, minutes and seconds measured
along the celestial equator going eastward starting from the vernal
equinox? Ans✓✓✓Right Ascension
How many arcminutes are equal to 0.6 degrees? Ans✓✓✓36 arcminutes
(1 degree = 60 arcminutes, so 0.6 degrees = 60*(0.6) = 36')
Which of the following types of optical telescopes have a primary
mirror? Ans✓✓✓Reflector (Reflector telescopes work under the
principle of reflection and have a primary mirror and a secondary
mirror)
Which is the instrument built to detect gravitational waves?
Ans✓✓✓LIGO - Laser Interferometer Gravitational (The Laser
Interferometer Gravitational-Wave Observatory is the instrument built to
detect gravitational waves)
How many seconds are equal to 0.5 degrees? Ans✓✓✓1800 arcseconds
1 degree = 3600
