Chapter 2- QP

You are standing at Earth's North Pole.  It is dark, and the stars are out.  What is an accurate description of where you need to look in order to find Polaris (the North Star)? Select one: a. straight overhead b. directly on the horizon c. about halfway up from the horizon to the zenith d. the North Star is not visible from this location

Which of the following statements about stellar parallax is true? A. We observe all stars to exhibit at least a slight amount of parallax. B. Stellar parallax was first observed by ancient Greek astronomers. O C. The amount of parallax we see depends on how fast a star is moving relative to us. D. It takes at least 10 years of observation to measure a star's parallax. OE. The closer a star is to us, the more parallax it exhibits.

1. For a fixed baseline, at what point does parallax cease to be an accurate technique for measuring distance?  2. What are two ways that you could more accurately measure the distance to an object using parallax?

7. Suppose you are on a strange planet and observe, at night, that the stars do not rise and set, but circle parallel to the horizon. Next, you walk in a constant direction for 8000 miles, and at your new location on the planet, you find that all stars rise straight up in the east and set straight down in the west, perpendicular to the horizon. How could you determine the circumference of the planet without any further observations? What is the circumference, in miles, of the planet? [OER Chapter 2, Figuring for Yourself #43]

On Earth, the parallax angle measured for the star Procyon is 0.29 arcseconds. If you were to measure Procyon's parallax angle from Venus, what would the parallax angle be? (Note: Earth's orbital radius is larger than Venus's orbital radius.) A. more than 0.29 arcseconds B. 0.29 arcseconds C. less than 0.29 arcseconds D.zero arcseconds (no parallax)

1. Where would the north celestial pole be located in the sky if you stood at the North Pole? A. 32.5 degrees above the northern horizon B. directly at your northern horizon C. 23.5 degrees above the northern horizon D. 57.5 degrees above the northern horizon E. directly over your head at your zenith   2. Where would the north celestial pole be located in the sky if you were standing in San Diego (San Diego’s latitude is 32.5 degrees above the equator? A. 32.5 degrees above the northern horizon B. directly at your northern horizon C. 57.5 degrees above the northern horizon D. directly over your head at your zenith E. 23.5 degrees above the northern horizon

If you live at a location on the Earth’s northern hemisphere, when will the longest day of the year be? a.vernal equinox b.winter solstice c.summer equinox d.summer solstice e.winter equinox The history of the universe described by the Big Bang theory is separated into different eras. During which era was the predominant temperature of the Universe about 1 million Kelvin? a.The Plank Era b.The GUT Era c.The Electroweak Era d.The Era of Nuclei e.The Era of Atoms Some planets have very strong magnetic fields. What features must a planet have to cause this? a.both rapid rotation and a conducting liquid core b.only a rapid rotation c.only a liquid conducting core d.both a rapid rotation and a solid metallic core e.only a metallic core

1.  A distant galaxy has an apparent magnitude of 10 and is 4,000 kpc away. What is its absolute magnitude? (Round your answer to at least one decimal place.)   The difference in absolute magnitude between two objects viewed from the same distance is related to their fluxes by the flux-magnitude relation. FA/FB= 2.51(MB − MA)       2.   How does the absolute magnitude of this galaxy compare to the Milky Way (M = −21)?

106x 103 x 1.701 x 1013 186 x 1.701 X 10 -10 -10 106,000 miles= 316.386 x 10 ' light years Exercise: One parsec is a unit of distance equal to roughly 3.25 light-years. The prefix Mega means "million." A star system 24 Mpc (Megaparsec) away from us in the direction of Orion is home to a hostile alien civilization intent on enslaving humans and forcing us to manufacture pizza sauce for their pleasure. What is the distance to these rapacious aliens in kilometers? Use your answer from the previous exercise. 000

1.Converting Angles a. Convert degrees to arcseconds: convert 45 degrees to arcseconds b. Convert degrees to radians: convert 45 degrees to radians

How many times brighter or fainter would a star appear if it were moved to:a. twice its present distance?b. ten times its present distance?c. half its present distance?

No Service 4:59 PM @ 35% attachments.office.net 1. What is the most common element in the Universe? 2. What is the distance between the Earth and the Sun? (one word) 3. What is the point where the Earth is furthest away from the Sun? 4. What do you call the model that the Sun is at the center of the Universe? 5. What constellation is Polaris observed? 6. What is the phase of the Moon? 7. What do you call the longest day of the year in the southern hemisphere? 8. When is the longest day of the year in the southern hemisphere? 9. Over what latitude is the Sun at 12PM on the vernal equinox? 10. Who first observed sunspots? 11. Who showed that the orbit of planets around the Sun is elliptical? 12. Which planet is second furthest from the Sun? 13. Stars in a constellation are A. physically close to each other. B. usually equal in brightness. C. about the same age. D. about the same distance away. E. in the same part of the sky. 14. Who was the first astronomer to use a telescope? A. Galileo…

TRUE OR FALSE only. 1. DIURNAL MOTION is caused by the daily motion of a planet on its axis. 2. Eudoxus was the first to propose that the sun is the center of the solar system. 3. The most perfect shape of the earth and universe according to Plato is cylindrical. 4. Ancient astronomers believed that the Earth did not move because there was no stellar parallax observed. 5. Galileo's observation of the planets supported the geocentric theory. 6. The planet closest to the sun has the shortest period of revolution about the sun. 7. In the proposed model by Copernicus, the earth was at the center of the universe. 8. Epicycles refer to the circular paths taken by planets. 9. The second law of planetary motion implies that the product of the velocity and the distance from the sun remain the same as a planet moves about the sun. 10. The first law implies that there is a common principle that governs the orbital motion of the planets.

1. Over the course of the year, the right ascension of the Sun .... Question options:   A)  decreases   B)  increases   C)  stays the same 2. For an observer located on the equator, the altitude of the stars due West will... Question options:   A)  increase and decrease   B)  decrease   C)  increase

Write the following measurements in scientific notation. All answers should be written up to hundredths place. Follow the rules in rounding off numbers. Quantity Measurement Scientific notation 1. diameter of the          sun 1391400 km   2. Speed of light 2997792458 m/s   3. distance of the earth from the sun 149597870700 m   4. size of bacteria 0.0005 m   5. diameter of proton 0.000 000 000 001 mm

1. How does Earth's revolution affect the constellations that you see at night? 2. What is the celestial sphere? 3. What is an ecliptic? why is it given that name?

I hope you answer this:) 1. Ancient civilizations observed and kept track of daily movement of heavenly bodies. Which one is NOT the reason for this? a. navigation purposes b. time keeping c. annual cultural cycles d. agricultural cycles   2. What Kepler's Law of Planetary Motion is related to the Newton's Law of Motion based from the statement below: The statement: "Since the planets move on ellipses they are continually accelerating." a. Law of Ellipses and Law of Acceleration b. Law of Ellipses and Law of Inertia c. Law of Equal Areas and Law of Interaction d. Law of Period and Law of Inertia e. Law of Period and Law of Acceleration   3. Edwi Hubble proposed a way to organize galaxies in 1920. How are galaxies classified? a. color of stars b. shape of galaxy c. age of stars d. composition of stars e. diameter of galaxy   4. Find the magnifying power (M) and the length (L) of a simple telescope with 30-inches focal length of the objective and 2 inches focal length of the eyepiece.…

asap 1. Imagine that an object is moving around the Sun. What will be the orbital period of the object in Earth years if its orbit has a semi-major axis 1.587 AU?

Assuming that the earth is a perfect sphere of radius 6370 kilometers, a person at a point T on top of a tower 60 meters high looks at a point P on the surface of the earth. What is the approximate distance of P from T ? a. 27.6 km b. 26.5 km c. 25.4 km d. 24.3 km

1. What is an astronomical unit (AU)? How many meters is one AU? 2. How many seconds are in one year? 3. Are the planets accelerating as they orbit the Sun? If so, what force is acting on them to cause the acceleration? Be specific.

1. The big dipper is part of A. URSA major B. CANIS major C. AQUARIUS D. LIBRA 2. The appearance of this constellation in the East is the first sign of spring A. SCORPIO B. LEO C. PAGASUS D. VIRGO 3. What is the red star in the constellation orion? A. SIRIUS B. BETELGEUES C. RIGEL D. LEO In the United States when can you see the orion in the evening? A. Summer B. winter C. Spring D. All year rounds 5. What is the largest constellation? A. Andromeda В. Нydra C. Orion D. Ursa Minor 6. The very bright stars alpha Centauri and Beta Centauri point towards A. The big Dipper B. The southern cross C. The milky way D. Galaxy 7. Sirius the brightest star of all, is in A. Canis major B. Corona Borealis C. Scorpius D. All of the above 8. The zodiac Marks A. Star cluster that are visible all night B. A ring of the brightest star in the night sky C. The path the sun appears to take through the sky D. None of the above 9. How many official constellations are there? 4. A. 48 В. 8 С. 12 D. 21 10. The…

Because of the precession of the Earth’s axis,   a. there are four seasons, spring, summer, fall, and winter.   b. the Earth receives more solar radiation in the summer than in the winter.   c. Polaris will not be the North Star in about 12,000 years.   d. the lengths of the Earth’s days and nights vary throughout the year.

Which of the following pair is INCORRECT? I. Parsec - Distance II. Barrel - Liquid III. Light year - Time A) Only III B) Only I and III C) Only II D) All are correct

1. How did Aristotle differentiate terrestrial and celestial motion? Give at least one example for each.2. According to Aristotle, what will happen to an moving object if there will be no force to act on it?

1. For an observer located on the equator, the altitude of the stars due West will...   A)  increase and decrease   B)  decrease   C)  increase

Astronomy help please What does each number (1-5) represent? a. Zenith b. Horizon c. Meridian d. North Celestial Pole e. Celestial Equator

Star X has an apparent magnitude of 0.03 and an absolute magnitude of 0.6. If it were moved to be twice as close to Earth as it is now, which of the following would occur? A. apparent magnitude number would decrease O B. absolute magnitude number would increase C. absolute magnitude number would decrease O D. apparent magnitude number would stay the same E. apparent magnitude number would increase