Sun size and brightness - Study guides, Class notes & Summaries

Astro 102 - Final Exam Set Questions With 100% Correct Answers | Latest Update What is cosmology? - ANSWER : the study of how the distribution of galaxies changes over time How does the size of a supernova compare with the size of the observable universe? - ANSWER : The size of a supernova is 2/3 the size of the observable universe Cepheids with longer periods have... - ANSWER : higher luminosities A Cepheid with a period of 30 days has an average luminosity that is.... - ANS...

White dwarfs: properties - Remaining cores of dead, low mass stars Electron degeneracy pressure supports them against gravity Slowly fade with time Sirius and its hot WD companion White dwarfs with same mass as Sun are about same size as Earth; slowly cooling Typical density 10^6 gram / cubic cm Higher mass white dwarfs are smaller Cannot be more massive than 1.4MSun, the Chandrasekhar limit WDs in binaries: nova, supernova Type I - Mass falls toward white dwarf from binary companion ...

dark energy + evidence correct answers a mysterious repulsive force that appears to be causing the expansion of the universe to accelerate Type Ia supernovae as standard candles; Hbl law says they should be moving faster there; inverse square law for light dictates that dimmer = farther; calculated dstncs to things are even farther than their redshift predicts; they are being pushed away dark matter + evidence correct answers matter (gravity, attractive force) that does not give off electr...

160 degrees - The visual field of the human eye is _____ wide. 160 degrees 135 degrees 90 degrees 200 degrees AV equipment allows for adjusting the "whiteness" for optimal display. - Why is color temperature awareness important in the AV industry? The AV industry strives to set the standard for "whiteness." AV equipment allows for adjusting the "whiteness" for optimal display. People expect exact "whiteness" when viewing a display. "Whiteness" is subjective with ever changing...

Survey final exam review questions & answers 2024/2025 The Sun's diameter is about _______ times larger than the Earth's diameter. - ANSWERS100 Solar sunspots are distributed uniformly over the Sun's surface both in position and time. True or False? - ANSWERSFalse Solar sunspots typically measure about 10,000 km across (about the size of the Earth!) True or False? - ANSWERSTrue The primary source of the Sun's energy is _____________________________. - ANSWERSfusion of light ele...

Edelman SPI review questions & Answers 2023. ______ is the distance covered by one cycle. a) pulse length b) wavelength c) cycle distance d) cycle duration ______ is the time to complete one cycle a) pulse duration b) pulse period c) period d) duration period ________ is a redirection of an ultrasound bean in many directions as a result of a rough boundary between two media: a) refraction b) Rayleigh Scattering c) scattering d) reflection _________ resolution is...

What are the characteristics of disk stars (yellow) of the Milky Way Galaxy? - High mass stars, the Sun, youngest stars, and stars that all orbit in nearly the same plane What are the characteristics of halo stars (green) of the Milky Way Galaxy? - Globular clusters, oldest stars, stars whose orbits can be inclined at any angle, and stars with smallest abundance of heavy elements. What are the characteristics of spiral galaxies? - They contain abundant clouds of cool gas and dust, are rare...

Ice Giant correct answers - a relatively new term used to refer to Uranus and Neptune - while they both contain substantial amounts of both hydrogen and helium, they contain substantially larger amounts of ammonia and especially methane than the larger gas giants dwarf planet correct answers An object that orbits the sun and is spherical, but has not cleared the area of its orbit. Kuiper Belt correct answers A region of the solar system that is just beyond the orbit of Neptune and that co...

Astro 102 Final Exam Ultimate Study Guide | 100% Correct Answers | Verified | Latest 2024 Version What are the characteristics of disk stars (yellow) of the Milky Way Galaxy? - High mass stars, the Sun, youngest stars, and stars that all orbit in nearly the same plane What are the characteristics of halo stars (green) of the Milky Way Galaxy? - Globular clusters, oldest stars, stars whose orbits can be inclined at any angle, and stars with smallest abundance of heavy elements. Wh...

The figure below shows an H-R diagram, with five stars labeled A through E. Which star has the highest temperature? - correct answer A If the sun was not currently in hydrostatic equilibrium, we would see? - correct answer the suns radius increasing and decreasing Which part of the sun is visible around the shadow of the moon? - correct answer chromosphere Stars that have spectral Type B _____ in temperature compared with stars that have spectral type M. - correct answer are hotter T...