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 Set 10
 1
0 Votes
 Printing on paper was invented in what century?Expired on
2019-03-08 17:03:57
 2
0 Votes
 Which peoples was an important stepping stone for preserving the earliest Greeks works and reintroducing those works to western societies?Expired on
2019-03-08 17:03:57
 3
0 Votes
 Constellations have been associated with animals in a device called an astrolabe. Vega an Altair are references to what animal?Expired on
2019-03-08 17:03:57
 4
0 Votes
 Ptolemy was responsible for what number of constellations?Expired on
2019-03-08 17:03:57
 5
0 Votes
 The latitude at which the 16th Century peoples responsible for developing the constellations was:Expired on
2019-03-08 17:03:57
 6
0 Votes
 Twelve new southern constellations: Apus, Chamaeleon, Dorado, Grus, Hydrus, Indus, Musca, Pavo, Phoenix, Triangulum Australe, Tucana, Volans are attributed to:Expired on
2019-03-08 17:03:57
 7
0 Votes
 The use of Greek letters to represent stars in constellations is attributed to:Expired on
2019-03-08 17:03:57
 8
0 Votes
 Leo Minor was a southern constellation invented by:Expired on
2019-03-08 17:03:57
 9
0 Votes
 Telescopium was a constellation invented by:Expired on
2019-03-08 17:03:57
 10
0 Votes
 Uranographia, the greatest star atlas ever produced, was developed by Johann Elert Bode in what year?Expired on
2019-03-08 17:03:57
 11
0 Votes
 The official listing of the 88 constellations was developed in 1919 by:Expired on
2019-03-08 17:03:57
 12
0 Votes
 An "international treaty" was developed to preserve the boundaries of constellations in 1930 by:Expired on
2019-03-08 17:03:57
 13
0 Votes
 The shape of a constellation will change over time?Expired on
2019-03-08 17:03:57
 14
0 Votes
 What is the year of the oldest sky chart as a paper document?Expired on
2019-03-08 17:03:57
 15
0 Votes
 The questions in this set are associated to the viewing of the Pictures in the sky: the origin and history of the constellations, a talk presented to the Royal Society in 2010 by Ian Ridpath who maintains at star tales website: http://www.ianridpath.com/startales/contents.htm This 46 minutes Royal Society lecture can be found on YouTube as: Pictures in the sky: the origin and history of the constellations Feel free to enter any comments or questions about the lecture below:Expired on
2019-03-08 17:03:57
 Set 5
 1
0 Votes
 Question 2: During the four years between December 1968 and November 1972 and the associated manned flights to the Moon, ____ men made the journey. They were the first human beings to leave the planet Earth for another world.Expired on
2019-05-04 13:15:00
 2
0 Votes
 Question 1: During the four years between December 1968 and November 1972 there were ____ manned flights to the Moon.Expired on
2019-05-04 13:15:00
 Set 4
 1View
5 Votes
 Wavelength: Light travels in glass at a speed which is approximately 67 percent of it maximum speed. Determine the frequency of light in Hertz (Hz) for a monochromatic light with a wavelength of 469 nanometers.Expired on
2019-02-27 14:00:00
 2View
3 Votes
 Time: The speed in which light travels is nearly 186,000 miles per second. Radio waves travel at this same speed. If your space ship was on its way to the Jupiter, having traveled 30 percent of the Earth-Jupiter distance, how long in seconds would it take to announce to Earth your location via a radio transmission?Expired on
2019-02-27 14:00:00
 Set 3
 1View
6 Votes
 Question 3: As you know, the Moon has a full phase roughly once ever 30 days, we could say the period of fullness of the Moon is 30 days = 2,592,000 seconds. The period is then a characteristic with cyclical motion, and is expressed in seconds. What then would the period of the minute hand on a clock be?Expired on
2019-02-22 13:53:10
 2
0 Votes
 Question 6: After opening the PHET Pendulum Lab, when set into motion, what is the frequency of an Earth-bound pendulum whose length is 0.7 meter? Hint: Determine the time it takes to complete say 5 cycles to determine the period for 1 cycle, the determine the frequency of the motion.Expired on
2019-03-01 13:53:06
 3View
6 Votes
 Question 4: What is the frequency of the second hand on a clock?Expired on
2019-02-22 13:49:13
 4
0 Votes
 Question 8: Why do the pupils of a cat's eyes open wider at night?Expired on
2019-03-01 13:50:25
 5View
5 Votes
 Question 5: What is the period of the second on a clock?Expired on
2019-02-22 13:53:46
 6View
6 Votes
 Question 1: The speed of light ______Expired on
2019-02-22 13:49:00
 7View
6 Votes
 Question 2: The visible part of the electromagnetic spectrum can be divided into seven color bands: red, orange, yellow, green, blue, indigo, and violet (from long to short wavelength). A single photon of which of these colors has the greatest amount of energy?Expired on
2019-02-22 13:49:05
 8
0 Votes
 Question 7: What kind of radiation does the human body predominantly emit?Expired on
2019-03-03 13:54:45
 Set 2
 1View
6 Votes
 Force on Satellite: Calculate the mutual force from gravitational attraction between the Earth and an orbiting satellite with mass of 100,000 kg and located 400 km above the surface of the Earth.Expired on
2019-02-13 14:00:00
 2View
7 Votes
 Seasons: To have no seasons, what must happen?Expired on
2019-02-13 14:00:00
 3View
7 Votes
 Moon Phase 2: Two weeks after a lunar eclipse, what is the phase of the Moon?Expired on
2019-02-13 14:00:00
 4View
7 Votes
 Moon Phase 1: One month after a lunar eclipse, what is the phase of the Moon?Expired on
2019-02-13 14:00:00
 5View
7 Votes
 Age: The age of the Universe has been measured to beExpired on
2019-02-13 14:00:00
 6View
7 Votes
 Constellations of stars have been named for centuries to convey stories and lore. The number of constellations officially recognized by the International Astronomical Union (IAU) is:Expired on
2019-02-13 13:34:33
 7View
7 Votes
 AU: The astronomical unit is __________ and measures_______.Expired on
2019-02-13 13:24:06
 8View
6 Votes
 Proxima Centauri: Astronomer's believe that there are potentially habitable planets located near its sun, one such example is the planet Proxima Centauri, and generally known as exoplanets. Suppose an exoplanet is located 1.356 AU from its sun, calculate the time that it takes for the light from that sun to travel to its exoplanet. Read more about Proxima CentauriExpired on
2019-02-13 13:33:39
 Set 1
 1
0 Votes
 Convert 107.4 kilometers per hour (km/hr) to feet per second (ft/s).Expired on
2019-02-12 01:38:29
 2View
7 Votes
 How many seconds are there in 7 years?Expired on
2019-01-07 19:50:20
 3View
7 Votes
 One light-year is the distance that light travels in one year. Recall that the the number of seconds in one year is 𝜋 x 107 seconds, and the velocity of light is 3 x 108 m/s. If we could see a star that was 10 billion light-years in distance away, how far in meters did the photon travel?Expired on
2019-01-16 14:01:24
 4View
6 Votes
 If we could see a star that was 10 billion light-years in distance away, how long would it take for a photon to travel to us?Expired on
2019-01-16 13:08:42
 5View
5 Votes
 One light-year is the distance that light travels in one year. Recall that the the number of seconds in one year is 𝜋 x 107 seconds. If we could see a star that was 10 billion light-years in distance away, how long would it take for a photon to travel to us?Expired on
2019-01-15 12:19:50
 6View
7 Votes
 What is astronomy in your own words? Enter your response in the reasoning block below.Expired on
2019-01-16 14:01:05

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