61⟩ Which of the following is a pulsating variable star whose brightness varies in a very regular time period of about 1-50 days
1. Lyrae star
2. Cepheid
3. Mira star
4. Cannon Star
Answer: B
Astronomy
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97 Astronomy Questions And Answers
62⟩ Name the part of the Sun that we can see without any instruments
The Photosphere
63⟩ Which of the following is NOT another name for the Pleiades?
1. M45
2. the seven sisters
3. the false dipper
4. the bull’s bowl
Answer: D
64⟩ What is the term for the amount of energy released from each square meter of an objects surface each second
1. energy flux
2. Pascal’s Law
3. Boltzman’s Equation
4. Kelvin’s Law
Answer: A
65⟩ The Kappa Cygnids and the Northern Delta Aquarids are names for what phenomena?
Meteor Showers
66⟩ When a superior planet is at quadrature in reference to the Earth, what is its elongation in degrees?
90o
67⟩ All of Saturns moons are composed predominantly of what substance?
Ice
68⟩ Rounded off to the nearest trillion, how many miles is in a light year?
6
69⟩ What are the scientific names for the two regions of a sunspot?
Umbra And Penumbra
70⟩ Give the common name for the phenomenon which is the result of sunlight reflecting off the Earth and faintly illuminating the darkened portion of the moon
Earthshine
71⟩ What substance is responsible for Neptunes blue-green color?
Methane Gas
72⟩ Whos book, titled Concerning the Revolutions of Celestial Spheres, is considered to mark the birth of modern astronomy?
Copernicus
73⟩ Of the three types of meteorites, which is the most common, in terms of the number of samples, to fall to Earth in recorded history
Stony Meteorites
74⟩ The celestial coordinate analogous to latitude is called
Declination
75⟩ What do Astronomers call the point in the sky that is directly overhead?
Zenith
76⟩ Which planet in our solar system has the most circular orbit?
venus
77⟩ A meteor that reaches the surface of the Earth is more accurately called a
meteorite
78⟩ Which moon is the only other body in our solar system, besides the Earth, that has an atmosphere of mostly nitrogen?
titan
79⟩ Based on best altitude conditions, during what month in the northern hemisphere is it the best time to observe the full moon?
December
80⟩ Mars has a thin atmosphere composed mainly of what gas?
carbon dioxide
