Luminosity - Study guides, Revision notes & Summaries

If star Alpha Centauri moved to 10 miles faster than it is now, the parallax angle would? correct answers get smaller What do you need to measure in order to determine a stars luminosity? correct answers Apparent brightness and distance Which of these stars clusters is oldest? correct answers A cluster whose brightest main sequence stars are yellow What two factors of info do you need for characteristics of stars? correct answers Its mass and it's stage of life Star A and B are iden...

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...

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...

Astro 7n Exam 2 Questions And Revised Correct Answers Already Passed A high-luminosity star... A. is always at a larger distance than a low-luminosity star B. emits more light than a low-luminosity star C. is always redder than a star with a lower luminosity D. is at a lower temperature than a low-luminosity star E. is always at a smaller distance than a low-luminosity star - ANSWER : B If a red giant appears the same brightness as a red main sequence star, which one is furth...

Gizmo Scavenger Hunt-8th Grade Statewide Science Questions and Answers Latest (Graded) What is wrong with this experiment? There isn’t a control variable everything is changing, like the amount of water the plant receives, and the amount of sunlight. 15 pts (SC.8.N.1.1) Create a controlled experiment using one of the following Gizmos (Growing Plants, Coral Reefs Gizmo, Food Chain Gizmo, Conduction & Convection Gizmo, Force & Fan Carts Gizmo, Fan Cart Physics Gizmo, Sled Wars Gizmo, ...

Hue correct answers Another name for color, I.e. primary color Skin Scribe correct answers Word for surgical pen Capacitor correct answers Mini power supply or where power is held Secondary color correct answers Two primary colors mixed Tertiary color correct answers Two secondary colors mixed Chroma correct answers Brightness or dullness Value correct answers Lightness or darkness of a color Flow correct answers Mimicking the lines of the body Luminosity correct answers ...

ASTRO 7N Exam 2 Question and answers rated A+ 2024 ASTRO 7N Exam 2 Sun's composition - correct answer Composed mostly of gas - hydrogen (73% by mass) and helium (25% by mass)` Sun's stability - correct answer Stable due to balance of gravity (inward force) and gas pressure in its hot interior (outward force) Sun's gas pressure - correct answer Gas pressure provided by nuclear fusion reactions in the Sun's core, going on at a temperature of 15 million degrees Kelvin Sun's diam...

EOSC Midterm Quizzes Questions with All Correct Answers 1) Which of the following best describes this figure? a. negative then positive feedback loop b. negative feedback loop c. positive feedback loop d. A neutral system with no positive of negative feedback e. positive then negative feedback loop - Answer- C 2) About how old are the oldest water deposited sedimentary rocks on Earth? a. 100 million years old b. 170 million years old c. 3.8 billion years old d. 2.5 billion y...

ASTRO 7N Exam 2Sun's composition - correct answer Composed mostly of gas - hydrogen (73% by mass) and helium (25% by mass)` Sun's stability - correct answer Stable due to balance of gravity (inward force) and gas pressure in its hot interior (outward force) Sun's gas pressure - correct answer Gas pressure provided by nuclear fusion reactions in the Sun's core, going on at a temperature of 15 million degrees Kelvin Sun's diameter and mass compared to Earth - correct answer Diameter:...

Which two factors primarily determine the characteristics of a star? Ans- its mass and its stage of life Star A is identical to Star B, except that Star A is twice as far from us as Star B. Therefore... Ans- both stars have the same luminosity, but the apparent brightness of Star B is four times that of Star A Which of the following statements about spectral types of stars is not generally true? Ans- The spectral type of a star can be used to determine its distance. Sirius is a star ...