Ast1002 Study guides, Class notes & Summaries

Which of the following has your "cosmic address" in the correct order? A. You, Earth, solar system, Local Group, Milky Way Galaxy, Local Supercluster, universe B. You, Earth, solar system, Milky Way Galaxy, Local Group, Local Supercluster, universe C. You, Earth, solar system, Local Group, Local Supercluster, Milky Way Galaxy, universe D.You, Earth, Local Group, Local Supercluster, solar system, Milky Way Galaxy, universe E. You, Earth, Milky Way Galaxy, solar system, Local Group, Local S...

From shortest to longest wavelength, which of the following correctly orders the different categories of electromagnetic radiation? gamma rays, X-rays, ultraviolet, visible light, infrared, radio Which forms of light are lower in energy and frequency than the light that our eyes can see? Infrared and Radio When considering light as made up of individual "pieces," each characterized by a particular amount of energy, the pieces are called _________. Photons Suppose you know the freque...

A scientific theory can be proved wrong if: cultural beliefs evolve to contradict it. scientists gather new data that disprove its predictions. it cannot explain all phenomena. it is based only on conjecture.scientists gather new data that disprove its predictions. A hypothesis may become a theory: after many repeated attempts to falsify it fail. if a majority of scientists agree on its propositions. after it has been logically proved. if it makes at least one verifiable predictio...

A scientific theory can be proved wrong if: cultural beliefs evolve to contradict it. scientists gather new data that disprove its predictions. it cannot explain all phenomena. it is based only on conjecture.scientists gather new data that disprove its predictions. A hypothesis may become a theory: after many repeated attempts to falsify it fail. if a majority of scientists agree on its propositions. after it has been logically proved. if it makes at least one verifiable predictio...

What is the relationship between color and wavelength for light?Wavelength increases from violet to red What is the one fundamental difference between X rays and radio waves?They are very different A particular reflecting telescope has an objective mirror with a focal length of 1.2 m and an eyepiece lens of focal length 6 mm. What is the magnifying power of this telescope?200 Why does the Sun look red when it's setting?Earth's atmosphere scatters shorter wavelength light more easi...

1) Approximately, what basic composition are all stars born with?B) three -quarters hydrogen, one -quarter helium, no more than 2 percent heavier elements 2) Since all stars begin their lives with the same basic composition, what characteristic most determines how they will differ?D) mass they are formed with 3) What are the standard units for luminosity?A) watts 4) A star's luminosity is theE) total amount of light that the star radiates each second. 5) What are the standard units for ...

A long thin cloud that stretched from directly overhead to the western horizon would have an angular size of90 degrees When a thin crescent of the Moon is visible just before sunrise, the Moon is in itswaning phase f the Moon's orbit around Earth were a little larger, solar eclipses would bemore likely to be annular According to "The Zodiac" Figure shown above, in June we would see the Sun in the direction of the constellation(s)...Gemini In the Figure below (Figure 0.20A - Parall...

A long thin cloud that stretched from directly overhead to the western horizon would have an angular size of 90 degrees When a thin crescent of the Moon is visible just before sunrise, the Moon is in its waning phase f the Moon's orbit around Earth were a little larger, solar eclipses would be more likely to be annular According to "The Zodiac" Figure shown above, in June we would see the Sun in the direction of the constellation(s)... Gemini In the Figure below (Figure 0.20A - Pa...

The average distance from Earth to the Sun, 149,600,000 km, can be written in shorthand notation as1.496x10^8 The elevation angle between the northern horizon of a fixed observer and the north celestial pole isThe observers latitude 1 arc second is equal to1/3600 Where would you have to be to see the south celestial pole on your horizon?On the equator The ecliptic crosses the celestial equatorAt two points, known as equinoxes Approximately what time will the first-quarter Moon rise?No...

What is the approximate rotation period of the sun? - ANSWER 25 days (equator) 36 days (poles) What is the approximate mean density of the Sun? - ANSWER 1410 kg/m3 What is the approximate surface temperature of the Sun? - ANSWER 5780 K How do we determine the luminosity of the Sun? - ANSWER L=Flux* 4 π R² What is the temperature of the core of the Sun? - ANSWER 15 million K What mechanism produces the energy in the core of the Sun? - ANSWER In the core, energy is produced by h...