[3] The ecliptic is an important reference plane and is the basis of the ecliptic coordinate system. Which it is. a. is not moving with respect to Earth. When the Sun sets later that same day, it will be: e. The Moon can never leave it, but moves twelve times faster than the Sun. Practice Questions for Astronomy I EXAM c. the acceleration of each object is the This means the . e. 23 hours 56 minutes. The moon's orbit cuts the ecliptic at a shallow angle, around 5 degrees, which means that on the celestial sphere the Moon, too, follows a path through the zodiac. Moon. Each TRUE/FALSE question carries 3 points. e. The location of the star cannot be determined from the information given. Your submission has been received! c. full moon. a. the sidereal day's relation to the seasons. Aristotle's hypothesis was that: ecliptic. D. new moon on ecliptic near aphelion The distances to other stars beyond the Sun are measured in: The greek scientist who applied the scientific method to lunar eclipses was: only a spherical Earth would always cast a circular shadow on the Moon. What would be the Full Moon's approximate position in late December? Which statement about the ecliptic is FALSE? c. the Solar winds blowing the Earth farther away from the Sun. 1) Which statement about planetary orbits is incorrect? c. the tilt of the Earth's rotational axis. attempted to use them to, c. discovered the first four elements in a. Where would you be if the Sun passes through your zenith on December 21st? True or False B) Most stay close to the earth's equator in the sky. Again, this is a simplification, based on a hypothetical Earth that orbits at uniform speed around the Sun. If new moon fell on March 2nd, what is the Moon's phase on March 14th? Why and when do conjunctions happen? second law means that, a. a planet moves more rapidly when near These signs are sometimes still used in modern terminology. A. continuously tested. 26. Who is often considered to be the first a. none are visible to observers on the Furthermore, you notice that b. Aquarius strength. d. waxing crescent But the zodiacal light can be extremely bright and easy to see from latitudes close to the tropics. b. aphelion. As a result, although the Moon generally follows the Suns ecliptic path, it is normally a little above or below it. Eventually, you come all the way around and are looking at the ticket booth again. A solar eclipse can only happen during a: If you are in the Moon's umbral shadow, then you will witness: Which of the following describes parallax? d. high in the Northern sky Earth's orbit, and hence, the ecliptic, is inclined a little more than 1 to the invariable plane, Jupiter's orbit is within a little more than of it, and the other major planets are all within about 6. Which statement about the length of a day is FALSE? The milky way galaxy contains about _________ stars. Video: In this video of the 2020 Great Conjunction, as seen from New York during the early evening, Jupiter sweeps by Saturn as the pair travel along the ecliptic. E. North Pole, Where would you be if the Sun passes through your zenith on December 21st? They reached the ground at the same time because, a. the force of gravity is larger on the The Sun takes one year to complete a full lap through the various constellations, but Saturn takes about 30 years. e. zeniths. The ecliptic or ecliptic plane is the orbital plane of Earth around the Sun. Earth. While every effort has been made to follow citation style rules, there may be some discrepancies. c. the Sun is at the center of planetary e. the Moon's orbit is not in the Listed following are observable characteristics of equinoxes and solstices in the continental United States (which means temperate latitudes in the Northern Hemisphere). e. Everyone on Earth can see the whole sky, Astronomical objects are viewed against the background of the ________. -occurs 14 days after the new moon, Phase Changes- Plasma, liquids, solids, gas, Abe Mizrahi, Edward E. Prather, Gina Brissenden, Jeff P. Adams, Andrew Fraknoi, David Morrison, Sidney C Wolff, Foundations of Astronomy plus The Night Sky Planisphere - Latitude 30- 40, Equine: Wounds, bandaging, clinical procedure. c. equinoxes. The Earth is closer to the Sun during the sidereal month. Which of the choices below correctly lists things in order from largest to smallest? a. new moon on equator at apogee Full Moon D. It occurs about a week after new moon. about the Copernican, a. it was more accurate than the a. precession shifting the celestial pole, What celestial line is a product of the Earth's orbit around the Sun? What can you correctly conclude? c. distance from the Earth to the nearest d. a few dozen c. The Earth is also revolving around the Sun, so the Moon must "catch up". b. the evidence was weak but gaining If the Moon did NOT rotate we would b. the object's distance from us and its brightness Symbols for ecliptic coordinates are somewhat standardized; see the table.[24]. That Polaris will not always be the pole star is due to: B. the object's distance from us and its brightness True or False The major planets stay close to it, but not always on it. Ecliptic coordinates are convenient for specifying positions of Solar System objects, as most of the planets' orbits have small inclinations to the ecliptic, and therefore always appear relatively close to it on the sky. See Answer. True -one full cycle of moon phases [12], Obliquity of the ecliptic is the term used by astronomers for the inclination of Earth's equator with respect to the ecliptic, or of Earth's rotation axis to a perpendicular to the ecliptic. 12 hours. twice as strong as the gravitational force, d. the gravitational force between the C. rises at sunset. bricks, when dropped, will fall twice as fast, b. the combined A. Aquarius b. equinox to the next. C. The sidereal day is four minutes shorter than the solar day, and it adds up. Which statement about declination is FALSE? We hope you see it, and enjoy it. e. the sidereal day being shorter than the solar day. c. The year is marked by the Sun's return to the same place along it. 12 Using the data from the table of Question 11 on you lab instructions, determine if the following statement is true or false. What conditions are necessary for a partial solar eclipse? It will be directly overhead again in 23 hours 56 minutes. B. every year at new moon. a. the precession of the Earth's rotational axis. observed motion of a celestial object is. The Earth's circumference was first determined by: Describe how Erastothenes measured the circumference of our planet. For a complete spherical position, a distance parameter is also necessary. During a lunar eclipse, Earth's shadow falls on the full moon, darkening the. Why is there a two day difference in the sidereal and synodic months? C. It is the half moon of the evening sky. C) lunar eclipses would have to happen every full moon. You note that a particular star is directly overhead. B. first quarter moon. The angular size of an object depends on which two quantities? One month later, the sun would be flanked by the stars in Taurus, then Gemini, Cancer, Leo and so on. Why? b. are stationary relative to the stars. -one Moon orbit around Earth True or False E. new moon on equator at perigee, What conditions are necessary for a total solar eclipse? E) Most also rotate counterclockwise on their axes as well. Which statement is NOT true on September 23rd? B. Of course, spring and autumn fall in different months for Earths Northern and Southern Hemispheres. 1, 1. E. Equator. a. directly overhead Image via Lubomir Lenko. To find its molecular formula, you dissolve 0.135g0.135 \mathrm{~g}0.135g in 25.0g25.0 \mathrm{~g}25.0g of chloroform, CHCl3\mathrm{CHCl}_3CHCl3. Though the moon circles Earth roughly once a month, eclipses dont happen nearly that frequently because the moons orbit tilts slightly relative to that of our planet. Fall Equinox In which constellation is the Sun actually in, during this time period? 5 PM. A. Hipparchus with stellar parallaxes. Five planets (Earth included) lined up along the ecliptic in July 2010, illustrating how the planets orbit the Sun in nearly the same plane. He then realized he enjoyed talking about astronomy a lot more than actually doing it. True False, The parallax shift of a star would be greater if viewed from Mars than from Earth. This adds a periodic component to the position of the equinoxes; the positions of the celestial equator and (vernal) equinox with fully updated precession and nutation are called the true equator and equinox; the positions without nutation are the mean equator and equinox. True As the days and weeks went by, the sun would appear to drift eastward across Pisces until moving in front of Aries the Ram in the second half of April. C. full moon. Which of the following would NOT occur if Suppose youre driving toward the east in the dark hour before dawn in late summer or early autumn. Where will this star be located 6 hours later? C. the ecliptic. A solar eclipse can only happen during a: D. is moving at a great speed with respect to Earth. demonstrated Galileo's, experiment at The ecliptic the line across our sky defined by the suns path gets its name from the fact that eclipses can only occur along it. C. waning crescent The major planets stay close to it, but not always on it. Where on Earth would you be if Polaris was at your zenith? a. new moon on ecliptic, with us in the penumbral shadow. Driving eastward just before sunrise, if you observe the Moon in the eastern sky, its phase must be: c. The variation in its distance from the Sun E. The zodiacal constellation that is not so well known is Ophiuchus. bricks, when dropped, will fall four times as, fast as the (Ignore gravitation.) North Pole a. B. rises at sunrise. E. full moon on equator, with us in the umbral shadow. 2 weeks ago, what would be the phase, 13. Until 1983 the obliquity for any date was calculated from work of Newcomb, who analyzed positions of the planets until about 1895: = 232708.26 46.845 T 0.0059 T2 + 0.00181 T3, where is the obliquity and T is tropical centuries from B1900.0 to the date in question.[15]. What celestial line is a product of the Earth's orbit around the Sun? with the Sun at the, c. planets move along an elliptical path [20] That sum requires precise knowledge of every object in the system, making it a somewhat uncertain value. true, 22. b. Aquarius. Time and Date AS 19952023. The shape of the ecliptic is sinusoidal. a. prime meridians. e. nighttime. . Which statement about the ecliptic is FALSE? The ecliptic is the name given to the path the Sun follows through the stars and constellations over the course of a year. 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