Moon facts Selected as the most interesting among technology related questions in Technology quiz What part of the Moon surface had been known to humanity before the first photos of the dark side were taken in 1959?59%. Moon's libration changes the angle from which the Moon is seen, allowing about 59% of its surface to be seen from the Earth (but only half at any instant). Moon's libration is caused by the eccentricity of its orbit around Earth and by a slight inclination of its axis of rotation.Created by: globalquiz.orgSolar System facts » What kind of 'natural disasters' happen on the moon?Moonquakes are produced by tidal forces. Moonquakres are much less common and weaker than earthquakes, although they can last for up to an hour - a significantly longer time than terrestrial earthquakes - because of the absence of water to damp out the seismic vibrations.Created by: life-o-holicastronomy facts » The Moon takes just as long to rotate around its own axis as it does to revolve around the planet (Earth). How many other moons in the Solar System share this feature?Most of them. If the rotational frequency of satellite is larger than orbital frequency, a small torque counteracting the rotation arises, eventually locking the frequencies in a tidal lock. Pluto and Charon are the extreme example, being locked to each other.Created by: globalquiz.orgastronomy facts » How long did it take Apollo 11 flight to reach the Moon? 3 days. It took 1 minute of flight to reach Mach 1 and 12 minutes to enter Earth's orbit. After one and a half orbits, the third-stage engine pushed the spacecraft onto its three-day long travel to the Moon.Created by: Hitter smasherspace facts » How long did Neil Armstrong’s first moon walk last?2½ hours. Each of the subsequent five Apollo program landings were allotted gradually longer periods for EVA activities – the crew of Apollo 17, by comparison, spent over 22 hours exploring the lunar surface.Created by: globalquiz.orgastronautics facts » What is larger on the sky: the Moon or the Sun? (by apparent size)Sometimes the Moon, sometimes the Sun. The Moon's orbit is elliptical, and its apparent diameter varies by 10%. This is why both total eclipses (if the Moon is larger) and annular eclipses (if the Sun is larger) happen.Created by: pan KrzyżówkaSun facts » How many people stood on the Moon so far?Twelve. There have been six manned U.S. landings of the Apollo program (between 1969 and 1972) and numerous unmanned landings, though no soft landings have occurred since 1976.Created by: globalquiz.orgNASA facts » Who was the first to visit the Sea of Tranquility?Neil Armstrong. Apollo 11 landing site was selected because it had been characterized as relatively flat and smooth by the automated Ranger 8 and Surveyor 5 landers.Created by: ex-terminatortechnology facts » Which of the following has the largest area?Pacific Ocean covers about one-third of the total Earth's surface area, making it larger than all of the Earth's land area combined (29%). The Moon's surface area is larger than Africa, but smaller than Asia.Created by: Kasiaoceans facts » Play technology quiz and see all the questions.