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Astronomy FITB
Fill in the blank questions for Astronomy
| Question | Answer |
|---|---|
| What is the mass of Jupiter? [Assume the Callisto's mass is negligible compared with that of Jupiter, and use the modified version of Kepler's third law | 1.87x10^27 |
| Because he failed to observe stellar ________, Aristotle wrongly concluded we could not be in orbit around the Sun. | parallax |
| Ptolemy's model was _____, with the Earth fixed in the center of the universe. | geocentric |
| For Galileo, the observation of the phases of _____ proved that Ptolemy's geocentric model with epicycles was wrong. | Venus |
| The three laws of planetary motion by ______ allowed us to predict planetary motion | Kepler |
| Like latitude on Earth, ___________ in the sky is measured in degrees north and south of the equator. | declination |
| The twelve constellations through which the Sun passes are signs of the ______. | Zodiac |
| The time interval of 365.242 days is defined as the _____________. | tropical year |
| A frequency of one _________ means the wave is vibrating a million times per second; this is a typical carrier frequency for FM radio | megahertz |
| The Sun's blackbody curve peaks in the _______ portion of the spectrum. | visible |
| Knowing the peak emission wavelength of a blackbody allows you to determine its ___________. | temperature |
| Fraunhofer was the German astronomer who first noted __________ lines in the Sun's spectrum | absorption |
| To a large degree, the ___ has replaced photographic film for astronomical imaging. | CCD |
| The separation of read and blue light in single-lens scopes is called _________ aberration. | chromatic |
| ________ optics deform the shape of the mirror to compensate for the turbulence in the atmosphere and yield a diffraction-limited image. | Adaptive |
| Of all the planets known in antiquity, ______ is the hardest to observe visually. | Mercury |
| The only two planets which can transit the Sun are ________ | Mercury and Venus |
| The direction of the rotation of Venus is exceptional because it is in a __________ direction. | retrograde |
| Because of their low surface gravities, the Moon and Mercury lack ___________. | atmospheres |
| In brightness, Jupiter is second only to the planet ______ most of the time. | Venus |
| The most famous and long lasting storm in the solar system is _____. | the Great Red Spot |
Created by:
dfw90