True False questions for Astronomy
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Stars do not twinkle; the instability of the atmosphere causes this effect. | True
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| The Compton GRO was the first telescope used for our exploration of high-energy astronomy. | False
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| Photography with film is still the preferred way of capturing fine detail in the faintest, most distant galaxies. | False
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| All the planets' orbits are even spaced. | False
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| Most astronomers now believe the demise of the dinosaurs 65 million years ago was caused by a large asteroid impacting the Yucatan peninsula area. | True
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| Many astronomers now regard Pluto as just the largest of thousands of Kuiper Belt bodies found beyond Neptune | True
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| The Oort Cloud lies closer to the Sun than the Kuiper Belt. | False
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| As a rotating gas cloud contracts, it spins faster. | True
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| In the solar nebular theory, the dusty disk condensing around the Sun's equator became the ecliptic plane in which the planets then formed. | True
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| Due to their great masses, all four Jovian worlds are much denser than earth. | False
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| A Kuiper Belt object was recently discovered that may be larger than Pluto | True
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| Astronomers have not yet been able to detect planets outside our solar system | False
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| We would expect other planets beyond our own solar system to orbit the equators of their home stars, as our own planets orbit the sun. | True
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| Compared to Earth, the Moon lacks a hydrosphere, atmosphere, and a magnetosphere | True
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| The moon keeps one side facing the Earth because it doesn't rotate on its axis. | False
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| Greenhouse gases in our atmosphere trap just enough heat to keep the earth's oceans liquid | True
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| The Earth's inner core is about the same temperature as the surface of the Sun. | True
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| A seismograph could register P but not S waves from an epicenter on the opposite side of Earth | True
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| Seismic P-waves can be detected worldwide from any strong epicenter. | True
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| Early telescopic observers thought the lunar mare were seas of water; today we know they are not liquid water but molten basalt, long ago frozen out. | True
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| Today most scientists favor the capture theory of the Moon's origin, since it would explain why the Moon still orbits in the ecliptic plane, as do other planets. | False
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| Aristotle was the first to propose that all planets revolve around the Sun | False
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| During retrograde motion, planets actually stop and move backwards in space | False
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| Copernicus's theories gained widespread scientific acceptance during his lifetime. | False
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| Galileo's observations of the sky were made with the naked eye | False
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| The Milky Way galaxy is about one million times larger than Earth. | False
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| The stars in a constellation are physically close to one another. | False
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| A lunar eclipse can occur only during the full phase. | True
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| The angular diameter of an object is inversely proportional to its distance from the observer. | True
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| As you drive away from a radio transmitter, the radio signal you receive from the station is shifted to longer wavelengths. | True
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| Gamma-ray telescopes employ the same basic design that optical instruments use. | False
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| One of the primary advantages of CCDs over photographic plates is the former's high efficiency in detecting light | True
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| The main advantage to using the HST is the increased amount of "night time" viewing it affords | False
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| The total mass of all the planets is much less than the Sun | True
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| Because of tidal forces, the Moon is in a synchronous orbit around Earth | True
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| Lunar maria are extensive lava-flow regions. | True
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| Earth's magnetic field is a result of our planet's large, permanently magnetized iron core. | False
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| Mercury's solar day is longer than its solar year | True
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| There is strong circumstantial evidence that active volcanism continues on Venus. | True
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| Valles Marineris is comparable in size to Earth's Grand Canyon | False
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| Storms in the jovian planets' atmospheres are generally much longer lived that storms on Earth | True
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| All four jovians spin faster than any of the terrestrials. | True
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| Jupiter's Great Red Spot is similar to a hurricane on Earth. | True
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| The Galileo probe into Jupiter's atmosphere found more water than expected. | False
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| We have observed a comet strike Jupiter. | True
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| Aurorae like ours have been seen above the poles of Jupiter and Uranus. | False
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